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Gear / Technical Help => Recording Gear => Topic started by: larrysellers on May 30, 2018, 10:32:12 AM

Title: Sound Devices MixPre-3 and 6, Part 5
Post by: larrysellers on May 30, 2018, 10:32:12 AM
Previous threads:

http://taperssection.com/index.php?topic=181803.0
http://taperssection.com/index.php?topic=182278.0
http://taperssection.com/index.php?topic=182573.0
http://taperssection.com/index.php?topic=183580.0
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: larrysellers on May 30, 2018, 10:33:42 AM
2 recordings with the newest firmware (v2.20) and no issues.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: sos on May 31, 2018, 11:37:44 AM
A quick followup firmware, v. 2.21, has just been released:

http://cdn.sounddevices.com/download/guides/FRN-MixPreSeries-v221.pdf

All features relate to cue markers, only.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: Gordon on May 31, 2018, 12:12:29 PM


All features relate to cue markers, only.

nope....

Fixed

For all models:
Windows 7 and 8 were not able to import or read MixPre .wav audio files.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: sos on May 31, 2018, 12:17:05 PM
I read/linked the wrong page...

https://www.sounddevices.com/support/downloads/mixpres-firmware
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: rigpimp on May 31, 2018, 01:27:38 PM
.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: morst on June 01, 2018, 04:05:35 PM
I have a firmware request, I sent it directly to SD, but I want to post here so others can ask as well. I know it's nitpicking.

Please note that polarity, and not "phase" is the correct term for that which is upside down but not time-shifted. Phase would involve a time-shift, and not just a hot/cold switcheroo!  ^-^

Hey Sound Devices!
Please change the PHASE setting label on each channel to POLARITY, thanks!

(edited to change will send to sent!)
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: rigpimp on June 01, 2018, 04:09:32 PM
Gonna run v2.21 tonight for Hackensaw Boys.  Wish me luck!
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: larrysellers on June 01, 2018, 04:13:33 PM
Clip indicator and peak hold look nice on the new FW.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: rigpimp on June 01, 2018, 05:40:13 PM
Clip indicator and peak hold look nice on the new FW.

Do those occur native or is it a setting you have to turn on?
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: larrysellers on June 01, 2018, 06:04:51 PM
If you the ring LEDs turned on,  it should happen automatically.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: rigpimp on June 02, 2018, 12:27:28 AM
If you the ring LEDs turned on,  it should happen automatically.
At sound check for Hackensaw Boys.  Ring LEDs on, no clip indicator or peak hold
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: checht on June 04, 2018, 02:33:52 PM
Can't find the answer to this in the thread, so pardon the repeat question:

The manual for the MP-3 states 'The MixPre-3 can record up to five audio tracks...'

So can one send the aux in to the mix tracks w/out the ISO's? Or is there some other way, or is it only 5 if you do a hot mix of the 3 ISO's onto the mix tracks along with the aux pair?

Or should I just have gotten the 6? :)

~Chris
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: rigpimp on June 04, 2018, 03:01:46 PM
I ran v.2.21 on Friday night without any problems.  I just formatted my card, loaded my preset, turned on bluetooth and away I went.

I will re-comment on the fact that during soundcheck I tentatively cranked my levels to see what the "clip indicator" looked like and saw nothing.  Also, is the peak hold feature the falling bar from the peak of each meter?  Hasn't that always been there?
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: heathen on June 04, 2018, 03:12:57 PM
Can't find the answer to this in the thread, so pardon the repeat question:

The manual for the MP-3 states 'The MixPre-3 can record up to five audio tracks...'

So can one send the aux in to the mix tracks w/out the ISO's? Or is there some other way, or is it only 5 if you do a hot mix of the 3 ISO's onto the mix tracks along with the aux pair?

Or should I just have gotten the 6? :)

~Chris

I was curious about this after reading your comment so I looked at the manual.  It appears to me that the five tracks are the three ISOs and the LR mix.  Hopefully someone who has more familiarity with the MP3 will correct me if I'm wrong.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: dallman on June 04, 2018, 04:08:42 PM
Can't find the answer to this in the thread, so pardon the repeat question:

The manual for the MP-3 states 'The MixPre-3 can record up to five audio tracks...'

So can one send the aux in to the mix tracks w/out the ISO's? Or is there some other way, or is it only 5 if you do a hot mix of the 3 ISO's onto the mix tracks along with the aux pair?

Or should I just have gotten the 6? :)

~Chris

I was curious about this after reading your comment so I looked at the manual.  It appears to me that the five tracks are the three ISOs and the LR mix.  Hopefully someone who has more familiarity with the MP3 will correct me if I'm wrong.

You are correct the MixPre3 is 3 ISO tracks and in addition an L/R mix track. So while it has 5 tracks total, only 3 are ISO tracks or individual inputs. That is why it is called a MixPre3. There is a lot of commenting on people who thought or presumed there would be a way to have 5 (ISO) inputs, but that is not how the deck was designed. From early comments at SD, it seems unlikely this can be changed nor was it in the design to begin with.

Similarly the MixPre6 has 6 ISO tracks. It has in addition a L/R mix track for a total of 8 tracks, but only has 6 (ISO) input tracks. And to clarify further, only four of the inputs (ISO's) have the Kashmir Preamps. Tracks 5 and 6 are plug in power or supply your own through an external Preamp.

ISO = Isolated track
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: fanofjam on June 04, 2018, 08:18:02 PM
I have a firmware request, I sent it directly to SD, but I want to post here so others can ask as well. I know it's nitpicking.

Please note that polarity, and not "phase" is the correct term for that which is upside down but not time-shifted. Phase would involve a time-shift, and not just a hot/cold switcheroo!  ^-^

Hey Sound Devices!
Please change the PHASE setting label on each channel to POLARITY, thanks!

(edited to change will send to sent!)


For what it's worth, the terms seem to used interchangeably...perhaps it's an American English vs Queens English thing.  Anyway, I went to B&H's website and did a sample of audio preamps that have polarity/phase switches and both terms are used.  (FWIW, I've always called it 'phase' and I'm pretty sure that's how it's referred to in my DAW...Adobe Audition though I don't have Audition on this machine I have in front of me.)

These guys call it a phase switch or phase reverse on the face of their preamp.

https://www.bhphotovideo.com/c/product/581139-REG/Summit_Audio_TPA_200B_TPA_200B_Microphone_Line_Preamp.html
https://www.bhphotovideo.com/c/product/1316011-REG/fmr_audio_rnp8380_really_nice_preamp.html
https://www.bhphotovideo.com/c/product/835231-REG/Chandler_LTD1_MIC_PREAMP_EQ_LTD1_MIC_PREAMP_EQ_1_CHANNEL.html

These guys call is a polarity switch.

https://www.bhphotovideo.com/c/product/1113552-REG/lindell_audio_evo6_500_series_discrete_mic.html
https://www.bhphotovideo.com/c/product/1239336-REG/trident_audio_series_80b_dual_microphone.html
https://www.bhphotovideo.com/c/product/689904-REG/Millennia_STT_1_SST_1_Origin_Twin.html
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: morst on June 05, 2018, 12:13:39 AM

For what it's worth, the terms seem to used interchangeably...
For what it's worth, I did say I was nitpicking, but I'll double down and say that about half of the uses are incorrect, or at the very least, imprecise.
Quote


These guys call it a phase switch or phase reverse on the face of their preamp.
Without looking, I can tell you that they all have it mislabeled if it's a switch.
Quote
https://www.bhphotovideo.com/c/product/581139-REG/Summit_Audio_TPA_200B_TPA_200B_Microphone_Line_Preamp.html
https://www.bhphotovideo.com/c/product/1316011-REG/fmr_audio_rnp8380_really_nice_preamp.html
https://www.bhphotovideo.com/c/product/835231-REG/Chandler_LTD1_MIC_PREAMP_EQ_LTD1_MIC_PREAMP_EQ_1_CHANNEL.html

These guys call it a polarity switch.
and they are correct.
Quote


https://www.bhphotovideo.com/c/product/1113552-REG/lindell_audio_evo6_500_series_discrete_mic.html
https://www.bhphotovideo.com/c/product/1239336-REG/trident_audio_series_80b_dual_microphone.html
https://www.bhphotovideo.com/c/product/689904-REG/Millennia_STT_1_SST_1_Origin_Twin.html

Here is a pretty good discussion of why polarity refers to signal inversion and phase refers to timing
https://theproaudiofiles.com/phase/

"One of the most confusing topics in audio is Phase. I think part of what makes it confusing is that people use it in reference to more than one issue.
What always seems to make things clear for me: figure out precisely which aspect is the concern then focus on the part that matters. It is such an issue that I avoid using the word Phase to prevent confusion.
There are really two things people mean when they say Phase: Polarity or Timing Difference.
Hopefully differentiating these can help you decide if you should push that Invert button or move a microphone when things sound weird."
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: morst on June 06, 2018, 12:15:07 AM
I'm not going to post every time I make a recording with the MixPre6, but I will make an exception for my initial outings. I recorded two shows by Monks Of Doom in small clubs in the San Francisco bay area. The deck performed more-or-less as expected. I was running firmware 2.10, and starting/stopping record and monitoring via the iOS app.

I was using the "suggested" custom combo mode where the knobs control ISO gain. I like it in principle, but in order to check the gain I had to move the fader, and change the gain!?  That seems weird.

Don't get me wrong, Audacity has the same problem, I have to click on the channel gain in order to find out how it's set, and that changes it if I move the mouse pointer at all!? But that's not my favorite way to run a user interface.

And we're off to the races.

Kick down thread for LMA posts: https://taperssection.com/index.php?topic=186685.0

https://archive.org/details/MonksOfDoom2018-05-19
Saturday, May 19, 2018
San Francisco, CA USA
The Make Out Room

https://archive.org/details/MonksOfDoom2018-05-20
Sunday, May 20, 2018
Albany, CA, USA
The Ivy Room
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: checht on June 06, 2018, 11:17:19 AM
[snip] ...but in order to check the gain I had to move the fader, and change the gain!?  That seems weird.

Why do you want to know the gain setting while recording? During a show, the only thing I care about is levels.

After a show, I sometimes see where the gain ended up in order to have a general sense of where to start at in a similar situation.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: Gordon on June 06, 2018, 11:23:15 AM
[snip] ...but in order to check the gain I had to move the fader, and change the gain!?  That seems weird.

Why do you want to know the gain setting while recording? During a show, the only thing I care about is levels.

After a show, I sometimes see where the gain ended up in order to have a general sense of where to start at in a similar situation.

this!  I tend to start at 20.   after that I don't care about the number just levels.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: jmitchell on June 07, 2018, 07:11:10 AM
[snip] ...but in order to check the gain I had to move the fader, and change the gain!?  That seems weird.

Why do you want to know the gain setting while recording? During a show, the only thing I care about is levels.

After a show, I sometimes see where the gain ended up in order to have a general sense of where to start at in a similar situation.



this!  I tend to start at 20.   after that I don't care about the number just levels.

I start at 20, but usually end up a bit higher.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: aaronji on June 07, 2018, 07:47:52 AM
There is a new version (I think) of the Wingman app:  https://www.sounddevices.com/support/downloads/wm-firmware (https://www.sounddevices.com/support/downloads/wm-firmware).
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: dallman on June 07, 2018, 10:50:52 AM

I was using the "suggested" custom combo mode where the knobs control ISO gain. I like it in principle, but in order to check the gain I had to move the fader, and change the gain!?  That seems weird.

Don't get me wrong, Audacity has the same problem, I have to click on the channel gain in order to find out how it's set, and that changes it if I move the mouse pointer at all!? But that's not my favorite way to run a user interface.

And we're off to the races.



I am now running 2.21 and the need to turn the gain knob is no longer the case. Just pushing the knob in to show the ISO track allows you to see what the gain setting is.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: morst on June 07, 2018, 05:52:45 PM
I am now running 2.21 and the need to turn the gain knob is no longer the case. Just pushing the knob in to show the ISO track allows you to see what the gain setting is.
I am not seeing that this is the case at all. Using the settings I have, a push of the channel knob takes you to the channel control page, but does not show the level until I move the knob. Likewise, in the mode where the level meters show, a twist of the knob is required to show the level of the channel. The MixPre6 must be a quantum recorder, because its operation is affected by looking at it.

Evidently, I am getting spoiled by modern digital metering. In the future, I'll simply set the knobs at 9 o'clock and go get drunk.

Until now, I've usually liked to run left and right channels at the same level. Changing one and not the other shifts the stereo image. Going forward I will have to learn how to use the balance control in linked mode. It seems unintuitive to me, but the SV3800 worked that way.

In Linked Mode do the knobs for #2 and #4 need to be at "noon" in order for channel balance to be preserved?

"Good sound, weird operation" is my review after three shows.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: dallman on June 07, 2018, 06:01:18 PM
I am now running 2.21 and the need to turn the gain knob is no longer the case. Just pushing the knob in to show the ISO track allows you to see what the gain setting is.
I am not seeing that this is the case at all. Using the settings I have, a push of the channel knob takes you to the channel control page, but does not show the level until I move the knob. Likewise, in the mode where the level meters show, a twist of the knob is required to show the level of the channel. The MixPre6 must be a quantum recorder, because its operation is affected by looking at it.

I think it changed with 2.20. I know I used to have to turn the knob, but now I only needed to press the ISO button.
Title: Sound Devices MixPre-3 and 6, Part 5
Post by: ycoop on June 07, 2018, 06:48:45 PM
I'm not going to post every time I make a recording with the MixPre6, but I will make an exception for my initial outings. I recorded two shows by Monks Of Doom in small clubs in the San Francisco bay area. The deck performed more-or-less as expected. I was running firmware 2.10, and starting/stopping record and monitoring via the iOS app.

I was using the "suggested" custom combo mode where the knobs control ISO gain. I like it in principle, but in order to check the gain I had to move the fader, and change the gain!?  That seems weird.

Don't get me wrong, Audacity has the same problem, I have to click on the channel gain in order to find out how it's set, and that changes it if I move the mouse pointer at all!? But that's not my favorite way to run a user interface.

And we're off to the races.

Kick down thread for LMA posts: https://taperssection.com/index.php?topic=186685.0

https://archive.org/details/MonksOfDoom2018-05-19
Saturday, May 19, 2018
San Francisco, CA USA
The Make Out Room

https://archive.org/details/MonksOfDoom2018-05-20
Sunday, May 20, 2018
Albany, CA, USA
The Ivy Room

Did you have a stand at the Ivy Room? Where were you situated?


Avantone CK-1s > DR-60d
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: morst on June 07, 2018, 06:52:39 PM
https://archive.org/details/MonksOfDoom2018-05-20
Sunday, May 20, 2018
The Ivy Room
Quote
Did you have a stand at the Ivy Room? Where were you situated?

Avantone CK-1s > DR-60d
Oh thanks for the reminder that I never filled out the blanks for lineage & source. Fixed now.
Ivy Room, no board feed was available from dude.
Neumann KM140s on stand at FoH + KM143s split on stage > Sound Devices MixPre6 > WAV @24/48
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: justink on June 08, 2018, 12:20:39 AM
https://archive.org/details/MonksOfDoom2018-05-20
Sunday, May 20, 2018
The Ivy Room
Quote
Did you have a stand at the Ivy Room? Where were you situated?

Avantone CK-1s > DR-60d
Oh thanks for the reminder that I never filled out the blanks for lineage & source. Fixed now.
Ivy Room, no board feed was available from dude.
Neumann KM140s on stand at FoH + KM143s split on stage > Sound Devices MixPre6 > WAV @24/48

this is awesome.  i wish we could get the counting crows on archive.org.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: ycoop on June 08, 2018, 12:36:02 AM
Here is a pretty good discussion of why polarity refers to signal inversion and phase refers to timing
https://theproaudiofiles.com/phase/

"One of the most confusing topics in audio is Phase. I think part of what makes it confusing is that people use it in reference to more than one issue.
What always seems to make things clear for me: figure out precisely which aspect is the concern then focus on the part that matters. It is such an issue that I avoid using the word Phase to prevent confusion.
There are really two things people mean when they say Phase: Polarity or Timing Difference.
Hopefully differentiating these can help you decide if you should push that Invert button or move a microphone when things sound weird."

Correct me if I'm wrong here, but phase and polarity would (sort of) be referring to the same thing for a perfect sinusoidal wave.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: Gordon on June 08, 2018, 11:11:25 AM
I am now running 2.21 and the need to turn the gain knob is no longer the case. Just pushing the knob in to show the ISO track allows you to see what the gain setting is.
I am not seeing that this is the case at all. Using the settings I have, a push of the channel knob takes you to the channel control page, but does not show the level until I move the knob. Likewise, in the mode where the level meters show, a twist of the knob is required to show the level of the channel. The MixPre6 must be a quantum recorder, because its operation is affected by looking at it.

I think it changed with 2.20. I know I used to have to turn the knob, but now I only needed to press the ISO button.

just updated to 2.21 and not seeing this either.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: dallman on June 08, 2018, 12:47:26 PM
I am now running 2.21 and the need to turn the gain knob is no longer the case. Just pushing the knob in to show the ISO track allows you to see what the gain setting is.
I am not seeing that this is the case at all. Using the settings I have, a push of the channel knob takes you to the channel control page, but does not show the level until I move the knob. Likewise, in the mode where the level meters show, a twist of the knob is required to show the level of the channel. The MixPre6 must be a quantum recorder, because its operation is affected by looking at it.

I think it changed with 2.20. I know I used to have to turn the knob, but now I only needed to press the ISO button.

just updated to 2.21 and not seeing this either.
I'll see if I can take a picture tonight. It is at the top left of the screen.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: Gordon on June 08, 2018, 12:50:17 PM

I'll see if I can take a picture tonight. It is at the top left of the screen.

got it!  I have my channels labeled (ak40l, ak40r etc) so for me the db just flashes for a second and then shows the label.  when you go back to main screen it also shows for a split second.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: morst on June 08, 2018, 01:52:13 PM
Correct me if I'm wrong here, but phase and polarity would (sort of) be referring to the same thing for a perfect sinusoidal wave.
Well, this is why it's confusing. It LOOKS the same but it's only the same when you're doing math on paper, or on your oscilloscope, not in the field.

A sine wave shifted 180 degrees looks the same as one which has its relative polarity inverted. But it's not the same signal, in real life.

MATH TIME, ignore if you want.

Example: a sine wave at 100 Hz has a half wave period of 1/200 second, or 0.005 sec, or 5 ms. If you delay a 100 Hz sine wave 5 ms, and add it to the original at the same level, you should get 100% cancellation.
But now your signal is delayed, by 180 degrees of phase, which is 5ms for a 100 Hz wave. Not really the same signal.

Anyhow. When you speak of phase, there are a lot more degrees of it than just 0 and 180, and a LOT MORE MATH.

When you actually want to invert polarity, without delaying a signal at a certain frequency, you (and SD!) should just label the function POLARITY and not phase. Especially if you can remedy it in firmware! Those fancy hardware boxes from B&H can't get a new paint job over the internet!!!
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: justink on June 08, 2018, 11:33:57 PM
i want to see a mixpre vs. Grace V3 comp.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: capnhook on June 09, 2018, 09:13:14 AM
Correct me if I'm wrong here, but phase and polarity would (sort of) be referring to the same thing for a perfect sinusoidal wave.
Well, this is why it's confusing. It LOOKS the same but it's only the same when you're doing math on paper, or on your oscilloscope, not in the field.

A sine wave shifted 180 degrees looks the same as one which has its relative polarity inverted. But it's not the same signal, in real life.

MATH TIME, ignore if you want.

Example: a sine wave at 100 Hz has a half wave period of 1/200 second, or 0.005 sec, or 5 ms. If you delay a 100 Hz sine wave 5 ms, and add it to the original at the same level, you should get 100% cancellation.
But now your signal is delayed, by 180 degrees of phase, which is 5ms for a 100 Hz wave. Not really the same signal.

Anyhow. When you speak of phase, there are a lot more degrees of it than just 0 and 180, and a LOT MORE MATH.

When you actually want to invert polarity, without delaying a signal at a certain frequency, you (and SD!) should just label the function POLARITY and not phase. Especially if you can remedy it in firmware! Those fancy hardware boxes from B&H can't get a new paint job over the internet!!!

+T morst

Truth
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: aaronji on June 13, 2018, 11:17:17 AM
New "M" flavors of the MixPre-3 and -6:  https://www.sounddevices.com/news/news/sound-devices-news/introducing-the-mixpre-3m-and-mixpre-6m-for-musicians (https://www.sounddevices.com/news/news/sound-devices-news/introducing-the-mixpre-3m-and-mixpre-6m-for-musicians)...
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: ts on June 13, 2018, 01:12:11 PM
So will the 3M handle a 2 channel SBD feed via Aux in while running mic in on channels 1 and 2? Also, these are $100 cheaper than their predecessors, but SD is offering a plug-in for $99 which turns your existing 3 or 6 into a M. :hmmm:
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: rippleish20 on June 13, 2018, 01:29:02 PM
So will the 3M handle a 2 channel SBD feed via Aux in while running mic in on channels 1 and 2? Also, these are $100 cheaper than their predecessors, but SD is offering a plug-in for $99 which turns your existing 3 or 6 into a M. :hmmm:

No. The 3M is three input. XLR only, no bluetooth/Wingman, no m/s encoding...


http://cdn.sounddevices.com/download/lit/MixPreMegaComparisonChart.pdf
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: ycoop on June 13, 2018, 03:17:46 PM
So will the 3M handle a 2 channel SBD feed via Aux in while running mic in on channels 1 and 2? Also, these are $100 cheaper than their predecessors, but SD is offering a plug-in for $99 which turns your existing 3 or 6 into a M. :hmmm:

No. The 3M is three input. XLR only, no bluetooth/Wingman, no m/s encoding...


http://cdn.sounddevices.com/download/lit/MixPreMegaComparisonChart.pdf

https://www.sounddevices.com/images/products/MixPre-3MRightPanel-web.png

Looks like it has an aux/mic input to me, and if I’m reading that chart correctly that can be two channels.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: heathen on June 13, 2018, 03:26:14 PM
From the manual for the MixPre-3m: "The MixPre-3M lets you record up to three tracks at once from either the three
XLR inputs, Aux in connectors, or USB inputs."
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: rippleish20 on June 13, 2018, 06:55:45 PM
I'm sorry,I can see how my XLR comment was misinterpreted - I was actually referring to the fact that they replaced the combo inputs with XLRs only.. You can only record three channels at a time as heathens comment reflects...


The plugin also appears to supplement the 3/6 with the m features rather than replacing them. Based on the video they released, after installing the plugin on a 3/6, you create a project and that project can use the traditional 3/6 firmware feature set or the new plugin features...

So will the 3M handle a 2 channel SBD feed via Aux in while running mic in on channels 1 and 2? Also, these are $100 cheaper than their predecessors, but SD is offering a plug-in for $99 which turns your existing 3 or 6 into a M. :hmmm:

No. The 3M is three input. XLR only, no bluetooth/Wingman, no m/s encoding...


http://cdn.sounddevices.com/download/lit/MixPreMegaComparisonChart.pdf

https://www.sounddevices.com/images/products/MixPre-3MRightPanel-web.png

Looks like it has an aux/mic input to me, and if I’m reading that chart correctly that can be two channels.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: dallman on June 14, 2018, 02:24:25 AM
I'm sorry,I can see how my XLR comment was misinterpreted - I was actually referring to the fact that they replaced the combo inputs with XLRs only.

MixPre 3 was always XLR only. MixPre 6 and 10 have combo inputs
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: JM Charcot on June 14, 2018, 06:52:06 AM
I asked Sound Devices, but maybe someone knows here, or has already used it, if I buy the musician plugin for my Mixpre-3, will it act after only as a Mixpre-3M, or will I still be able to use it also as a Mixpre-3 when recording in the field?

Kind regards,

JM.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: rippleish20 on June 14, 2018, 09:41:38 AM
I'm sorry,I can see how my XLR comment was misinterpreted - I was actually referring to the fact that they replaced the combo inputs with XLRs only.

MixPre 3 was always XLR only. MixPre 6 and 10 have combo inputs

I didn't realize that. Thanks...
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: rippleish20 on June 14, 2018, 09:45:36 AM
I asked Sound Devices, but maybe someone knows here, or has already used it, if I buy the musician plugin for my Mixpre-3, will it act after only as a Mixpre-3M, or will I still be able to use it also as a Mixpre-3 when recording in the field?

Kind regards,

JM.

Based on the video they put up, a Mixpre-3 or 6 with the plugin can act as it normally does using the stock firmware or act as if it were a m version. After you install the plugin, you create a  project and choose between "audio" and "music". One gives you the standard feature set and the other the m feature set...
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: JM Charcot on June 14, 2018, 10:00:57 AM
I asked Sound Devices, but maybe someone knows here, or has already used it, if I buy the musician plugin for my Mixpre-3, will it act after only as a Mixpre-3M, or will I still be able to use it also as a Mixpre-3 when recording in the field?

Kind regards,

JM.

Based on the video they put up, a Mixpre-3 or 6 with the plugin can act as it normally does using the stock firmware or act as if it were a m version. After you install the plugin, you create a  project and choose between "audio" and "music". One gives you the standard feature set and the other the m feature set...

Absolutely, I just had the confirmation from Sound Devices, this is good news.  :)
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: dogmusic on June 14, 2018, 11:04:55 AM
Can you transfer a recording made as an Audio project into a Music project internally in the MixPre6 with plugin (i.e., for use as a bed track) or would you have to download it first to computer and then import it?
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: Paul Isaacs on June 14, 2018, 06:31:11 PM
Can you transfer a recording made as an Audio project into a Music project internally in the MixPre6 with plugin (i.e., for use as a bed track) or would you have to download it first to computer and then import it?

You can import it directly from audio project into music project! So damn versatile!
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: dogmusic on June 14, 2018, 07:35:48 PM
Can you transfer a recording made as an Audio project into a Music project internally in the MixPre6 with plugin (i.e., for use as a bed track) or would you have to download it first to computer and then import it?

You can import it directly from audio project into music project! So damn versatile!

Excellent! That opens up many possibilities. Thanks for your reply, Paul.

If you've recorded at 24/192 in Audio, will it do the conversion to 24/96 when importing into Music?
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: IronFilm on June 14, 2018, 09:10:04 PM
I asked Sound Devices, but maybe someone knows here, or has already used it, if I buy the musician plugin for my Mixpre-3, will it act after only as a Mixpre-3M, or will I still be able to use it also as a Mixpre-3 when recording in the field?

Kind regards,

JM.

I assume it will be just like 10T users who buy the M plugin. You will get all the benefits of the original plus the M version in the same device.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: noahbickart on June 14, 2018, 09:16:04 PM
As a taper, does the M plugin help me at all?
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: morst on June 15, 2018, 01:02:33 AM
As a taper, does the M plugin help me at all?
I'll gamble and say that's a straight NO.

I'm not really seriously considering the purchase of this M plugin for my 6.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: edtyre on June 15, 2018, 12:47:32 PM
As a taper, does the M plugin help me at all?
No
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: Paul Isaacs on June 15, 2018, 01:15:37 PM
Can you transfer a recording made as an Audio project into a Music project internally in the MixPre6 with plugin (i.e., for use as a bed track) or would you have to download it first to computer and then import it?

You can import it directly from audio project into music project! So damn versatile!

Excellent! That opens up many possibilities. Thanks for your reply, Paul.

If you've recorded at 24/192 in Audio, will it do the conversion to 24/96 when importing into Music?

No!
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: noahbickart on June 19, 2018, 07:04:08 AM
I've finally updated my firmware.

Have any of you made use of the cue markers for "what we do?" If so, how?
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: morst on June 19, 2018, 11:29:56 PM
I've finally updated my firmware.

Have any of you made use of the cue markers for "what we do?" If so, how?
I get distracted during shows and can't be counted on to track an entire set live. Far easier for me to do it in post.

Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: Mike D (VT) on June 23, 2018, 08:00:21 PM
I'm the proud new owner of a MixPre 6!
Most recently, I had a Tascam DR-70D (currently FS) and I feel like it's a big upgrade.
I've always admired Sound Devices quality and sound and I'm very excited to use it in the field in about a month.
Thanks for all the info in the last +/- 75 pages of these threads. It took awhile, but I managed to pull quite a lot of useful tips and feel very comfortable with it already.
If anyone here runs Jim Williams 460s, please chime in!
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: Brian Skalinder on June 28, 2018, 02:49:36 PM
All -- I've moved the discussion of MixPre-3/6 v. Zoom F4/8 discussion to its own thread (http://taperssection.com/index.php?topic=186975.0).  Please discuss and compare there, and leave this thread for discussion about the MixPre-3 and -6.  Thanks.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: rigpimp on June 28, 2018, 04:51:00 PM
All -- I've moved the discussion of MixPre-3/6 v. Zoom F4/8 discussion to its own thread (http://taperssection.com/index.php?topic=186975.0).  Please discuss and compare there, and leave this thread for discussion about the MixPre-3 and -6.  Thanks.

Thank you for cleaning it up.  You must have just picked an arbitrary post and moved everything after that?  My posts about using the Mixpre-6 USB-A as an audio output just ended up in a thread a comparing it to a Zoom product.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: aaronji on June 28, 2018, 05:02:53 PM
All -- I've moved the discussion of MixPre-3/6 v. Zoom F4/8 discussion to its own thread (http://taperssection.com/index.php?topic=186975.0).  Please discuss and compare there, and leave this thread for discussion about the MixPre-3 and -6.  Thanks.

Thanks, Brian!
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: Brian Skalinder on June 28, 2018, 07:07:00 PM
Thank you for cleaning it up.  You must have just picked an arbitrary post and moved everything after that?

I picked what seemed like the start of the comparison and took everything after.  Tried splitting out post by post, but the mechanism to do so wasn't working properly.  So I just split off everything.  Apologies for the inconvenience.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: borjam on June 30, 2018, 01:16:12 PM
I received my MixPre-3 on Friday. Coming from a FR-2LE and a MD661mkii it was like I reached Nirvana or something.

Being someone who only skims manuals it was a bit puzzling at first. And of course I am someone who immediately configures whatever thing in "advanced" rather than "basic" mode. Once figured out, I see how it fits different use cases.

Anyway, the important stuff.

First thing I did after hearing so much about the headphone amplifier was to hook it to a computer, plug my HFI-650 cans and listen to "Alfa Centauri" by Fredrik Carlquist. I must say I was blown away immediately. These headphones are very efficient but I think that their impedance on low frequencies is too low. So many headphone amplifiers can suffer a lot with them. I can see these units getting fashionable at some audiophile circles as headphone amplifiers. Something similar happened with Metric Halo several years ago, with audiophiles getting the ULN-8 just to use it as a D/A converter.

Which brings us to the next test: going to the nearby wetland and listen to some birds. I tried some not-so-gentle movements of the Rode Blimp without engaging the HPF yet and I was really surprised. Of course there was low frequency sound. But the amplifier didn't distort. (The FR-2LE can even catch fire doing this).

Next test: Limiters and HPF. Both implemented in the analog domain or with a first stage in the analog domain. Impressive. The release time for the limiter is long (500 ms) and it's not possible to adjust it, but that's only evident when one pushes the envelope too much. Using the limiters reasonably (ie, to prevent accidents) it shouldn't be much of a problem.

The HPF is great. Coming from a FR-2LE, like a different world. It cut down the handling noise perfectly without affecting the conversion of course. And I really like the metering. It's quite convenient. The headphone volume knob is in an odd position, that's true. But it's only a minor annoyance (at least for me).

I was surprised at how small it is. Reviews mentioned it of course but you have to behold it to believe. I've noticed that it consumes a lot of power, but good preamplifiers with excellent noise floors are hungry. Anyway for now Eneloop Pros seem to be a good solution. Eventually I guess I'll get the L-mount battery adapter. It's a great solution to use it in a bag.

Now, I'm curious about the usage of a 32 bit ADC. Have they added resolution to the bottom in order to reduce quantization noise? Reviewers are surprised at how silent it is even when recording at low levels adding gain in post. So that might be an explanation.

I'm a happy camper for now although I've pestered them a bit about the lack of a phase/polarity reversal option for the inputs.

Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: mjwin on July 05, 2018, 03:05:13 PM
Query re. USB data connection

I've just taken delivery of a MixPre-6, & it's a fab device in most respects  But one simple task is eluding me &  I'm tearing my hair out.

I don't want to power the MixPre via USB, simply drag & drop a few files onto a connected pc.  With a solid battery pack connected, methinks I ought to be able to plug in a USB C-A cable, select transfer mode, and away we go, just like with every other piece of USB equipment I've ever encountered.

But it seems this is not the case.  When I do so with an A-C cable, (or use just one part of the supplied Y cable), the MixPre crashes, or goes into an endless power-up loop, & so on.  I contacted SD tech support who have been super-prompt in replying  either side of the holiday,  and they asked for  a video of the machine behaviour, which I sent. But  I've  just been  told that I MUST use the supplied Y lead & take up 2 USB slots on the p/c. "or it will cause the machine to hang as you were encountering."   Surely this isn't correct?

The user manual is confusing too. In one place (p7) it says I can choose battery power over USB,  in the USB section (p33) this option  isn't mentioned (nor, more importantly,  is the option on the actual machine).

Hmmm...

This is such a simple & fundamental requirement, it must be possible.... Every other USB device in the known universe just connects when you plug it in!

So any input welcome!

Thanks,

Martin
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: aaronji on July 05, 2018, 04:03:08 PM
^ I use the supplied Y-cable, with the part marked "data" plugged into the computer and the USB-c end plugged into the MixPre with a battery sled attached. When I switch the MixPre on, I get a screen that says something like "USB-c power low. Use battery power?" I click "yes" and go to file transfer mode, at which point an Explorer window for the MixPre pops up. Then, I can drag and drop or copy and paste the files.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: mjwin on July 05, 2018, 05:30:40 PM
@aaronji Thanks for that succinct description. That's exactly how I would expect the MP6 to behave if it had an issue with the power.  Giving the option to select battery power also tallies with what is said in the manual.  But when I connect my MP6 in this way, (only one USB-A connector)  it simply freezes or enters an endless power-cycle loop.  I wonder why SD support told me that this was expected behaviour.  I was beginning to think, "welcome to the brave new world of USB-C incompatibilities", but maybe my unit has a problem after all.  Doubtless I'll get to the root of it all at some point, but for now I'm going "old school" and popping out the SD card to transfer files. It's simple. It works.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: morst on July 05, 2018, 09:06:53 PM
When I switch the MixPre on, I get a screen that says something like "USB-c power low. Use battery power?" I click "yes" ...
That is weird behavior. I just tested on my MacBook Pro and my MixPre6 fired up fine with just the "Data" side of the Y cable in the mac USB port. It did have the low voltage indication, but that's ok. I don't usually click YES on this. I let the machine run at low power, unless I need to use 4 channels of 48V Phantom Power right then.

In fact, when I have the machine plugged into USB-C doing transfers or messing with the menus, I typically don't even keep the battery sled attached at all, so I don't have to reject that message!

Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: aaronji on July 06, 2018, 06:12:58 AM
When I switch the MixPre on, I get a screen that says something like "USB-c power low. Use battery power?" I click "yes" ...
That is weird behavior. I just tested on my MacBook Pro and my MixPre6 fired up fine with just the "Data" side of the Y cable in the mac USB port. It did have the low voltage indication, but that's ok. I don't usually click YES on this. I let the machine run at low power, unless I need to use 4 channels of 48V Phantom Power right then.

Why is it weird?  As far as I am concerned, the choice between battery or USB power for file transfer is pretty much arbitrary.  Six of one, half dozen of the other and all.  I guess if your battery is really low, USB might make more sense, but, otherwise, it's a question of what color battery indicator you prefer!  Much of the time, I just pull the card if I am unpacking my gear (removing the batteries from the sled) and use the built-in SD card reader on my computer... 
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: aaronji on July 06, 2018, 06:23:16 AM
@aaronji Thanks for that succinct description. That's exactly how I would expect the MP6 to behave if it had an issue with the power.  Giving the option to select battery power also tallies with what is said in the manual.  But when I connect my MP6 in this way, (only one USB-A connector)  it simply freezes or enters an endless power-cycle loop.  I wonder why SD support told me that this was expected behaviour.  I was beginning to think, "welcome to the brave new world of USB-C incompatibilities", but maybe my unit has a problem after all.  Doubtless I'll get to the root of it all at some point, but for now I'm going "old school" and popping out the SD card to transfer files. It's simple. It works.

Is the MixPre already powered up when you plug in the cable?  Maybe that makes a difference?  I have always hooked up the cable and then turned on the recorder.  Also, maybe try an earlier firmware.  1.53 seems pretty stable (although lacking a few features of the newer versions); they are all available for download on the SD site.  Lastly, have you reformatted the card after any firmware updates?  I have seen a few posts elsewhere suggesting that the card should be formatted with the installed version of the firmware.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: mjwin on July 06, 2018, 03:14:17 PM
Is the MixPre already powered up when you plug in the cable?  Maybe that makes a difference?  I have always hooked up the cable and then turned on the recorder.  Also, maybe try an earlier firmware.  1.53 seems pretty stable (although lacking a few features of the newer versions); they are all available for download on the SD site.

I've tried it all ways, with (nearly) always the same result: on power-up the splash screen comes up, ring LEDs flash, all goes blank for a couple of seconds & the cycle repeats... Pulling the USB cable usually resets it & the device powers up fine.  A couple of times (including on the video I sent to SD) the device actually froze & I had to pull the battery to power it down!  Not good.

I'm using the  latest firmware, 2.21 which came with the MP6, & I don't really want to roll back as far as 1.53. Also, with a potentially unstable machine, I don't want to run the risk of "bricking" it when performing a f/w update! 

I'm a bit reluctant to contact my suppliers over this just yet since I've already had them replace a faulty MX8AA battery sled, and I also felt I needed to tell them that their delivery courier left both the  Mixpre & the replacement sled at the side of the road rather than bringing them to my house! So they're gonna think I really am the customer from Hell if I tell them my Mixpre is, well, "not fully functional" shall we say...  It also doesn't help that the guy in SD support was adamant that my unit was behaving correctly, ie locking up &/or power cycling, when connecting just the data plug of the Y cable (or a standard USB C-A cable).  As an electronics engineer myself, I still can't believe that SD would knowingly  release something which actually crashed/locked up if the user forgot to connect a cable (which is effectively all I'm doing): their stuff is usually bulletproof.  And, of course, you guys seem not to have this problem anyway, just (maybe) a warning message on screen  if there's insufficient USB power. 

I guess at this point, the more ppl who say that they transfer data just fine with a single USB-A, the more backup I have if I claim my unit is faulty.  I don't post much here, but I do find the can-do attitude & willingness to help just so refreshing :cheers:
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: morst on July 06, 2018, 09:02:30 PM
When I switch the MixPre on, I get a screen that says something like "USB-c power low. Use battery power?" I click "yes" ...
That is weird behavior. I just tested on my MacBook Pro and my MixPre6 fired up fine with just the "Data" side of the Y cable in the mac USB port. It did have the low voltage indication, but that's ok. I don't usually click YES on this. I let the machine run at low power, unless I need to use 4 channels of 48V Phantom Power right then.

Why is it weird?  As far as I am concerned, the choice between battery or USB power for file transfer is pretty much arbitrary.  Six of one, half dozen of the other and all.  I guess if your battery is really low, USB might make more sense, but, otherwise, it's a question of what color battery indicator you prefer!  Much of the time, I just pull the card if I am unpacking my gear (removing the batteries from the sled) and use the built-in SD card reader on my computer...

Sorry my post was not clear. I typed it up, and then right before posting, I reorganized it, and it reads like I was saying your reaction to the battery choice was weird. Not what I meant.

I meant that the behavior of mjwin's machine was weird!!! 
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: borjam on July 07, 2018, 04:22:51 AM
In case it's some current supply problem with your USB port (although it shouldn't happen, Sound Devices are experts on power management from what I've seen) try reducing power consumption.

In advanced mode you can turn inputs off. I imagine that they will turn off the preamp for the channel in order to save energy (I would do it). You can even try reducing the screen and leds brightness.

I have tried the USB cable (MixPre 3) connected to my 2010 Mac Pro and it works. The ports are USB 2.0 (USB 3.0 didn't exist yet). I know that some PC motherboards fail to meet the power requirements of USB 2.0 devices, hence so many Y cables seen on devices intended for PCs. I know that in the case of the MixPres the reason is that they need more current than offered by a standard USB 2.0.

You can also try a good powered USB 2.0 hub. If the problem is in the motherboard failing to deliver power that would solve it. But make sure that it's 2.0.
And a good one, there is so much crap out there nowadays...

Also, have you tried a different card? Some are troublesome and Amazon has been known to sell knock-offs of well known brands.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: mjwin on July 08, 2018, 02:55:05 PM
Ok. Thanks for the suggestions / ideas. After reading these, together with some pretty extensive online research, I decided that the MP6 really shouldn't be behaving as it did. So today I thought I'd do one last test cycle &, guess what?

It now works correctly! (?) 

No crashes, power cycles or other tantrums. In short, exactly as it should be.

So, in each of the following instances, I get that little warning box pop up:
"USB-C Power is low. Battery power present,  would you like to run on battery power?
If I choose
"YES" - batt gauge full-on green (presumably runs off 8AA sled)
"NO" - batt gauge orange with the USB symbol. (presumably runs off USB low power)

I tried each plug of the Y lead independently - fine
A standard USB A-C cable I bought in town -  fine
2 different laptop pcs - fine
an Anker powercore 10000 - fine

I did give the MP6 a pretty good talking to the other night, showed it some scary looking test equipment which was gonna prod its insides, etc. Sometimes this does the trick. Machines can get above themselves...

So, now I just need to get out & hit record.  :headphones:
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: dallman on July 09, 2018, 01:40:04 AM
Ok. Thanks for the suggestions / ideas. After reading these, together with some pretty extensive online research, I decided that the MP6 really shouldn't be behaving as it did. So today I thought I'd do one last test cycle &, guess what?

It now works correctly! (?) 

No crashes, power cycles or other tantrums. In short, exactly as it should be.

So, in each of the following instances, I get that little warning box pop up:
"USB-C Power is low. Battery power present,  would you like to run on battery power?
If I choose
"YES" - batt gauge full-on green (presumably runs off 8AA sled)
"NO" - batt gauge orange with the USB symbol. (presumably runs off USB low power)

I tried each plug of the Y lead independently - fine
A standard USB A-C cable I bought in town -  fine
2 different laptop pcs - fine
an Anker powercore 10000 - fine

I did give the MP6 a pretty good talking to the other night, showed it some scary looking test equipment which was gonna prod its insides, etc. Sometimes this does the trick. Machines can get above themselves...

So, now I just need to get out & hit record.  :headphones:
Nothing like a happy ending! :clapping: :cheers:
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: checht on July 10, 2018, 03:40:18 PM
 Bluetooth issues resolved with help from tech-support.

********WARNING*********
 This method erases all internal presets so be sure to save them to SD card before using.
*************************

I’ve been having trouble with my MP3 not connecting to my iPhone X and the wingman app. It originally connected fine but the last couple months it’s taken me multiple times to connect and usually I have to go into the system menu and turn Bluetooth off and back on again. [insert IT Crowd joke here].

Today I called tech-support and the tech suggested I try a reset which consisted of holding the headphone knob and the channel one knob down while powering up and keeping them held down until I got to the home screen.

At this point looks like everything works great. I’ve tested it quite a few times and it connects to Bluetooth every time it boots.

Also I asked the tech about the potential for Bluetooth audio monitoring and he said that it’s policy for them not to comment on features in development but I interpreted that as meaning it is a distinct possibility.

Cheers
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: dynamicalories on July 12, 2018, 09:15:37 AM
Just got my MixPre-6 yesterday and I think I've mostly got this thing figured out, but two questions remain:

1. How do I turn off the recording of the L-R Mix track? I just want to record 4 tracks. I figured out how to link channels 1 and 2, and 3 and 4, so I basically just want to end up with 2 stereo tracks which I do understand will be in a polywave file.

2. Is there still an issue with 64 GB SD cards? Or has that issue been resolved. (I've got the 2.21 firmware.)

Thanks!
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: dallman on July 12, 2018, 10:45:16 AM
Just got my MixPre-6 yesterday and I think I've mostly got this thing figured out, but two questions remain:

1. How do I turn off the recording of the L-R Mix track? I just want to record 4 tracks. I figured out how to link channels 1 and 2, and 3 and 4, so I basically just want to end up with 2 stereo tracks which I do understand will be in a polywave file.
MENU-RECORD- SUB MENU-Rec L,R Mix-Deselect L&R (Off). You will still see the meters, but it will not record them. Pg 29 of the manual

2. Is there still an issue with 64 GB SD cards? Or has that issue been resolved. (I've got the 2.21 firmware.)
No issue. I have been using 64 and 128 cards without any issue.

Thanks!
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: dynamicalories on July 12, 2018, 11:19:47 AM
Thanks!
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: morst on July 12, 2018, 12:23:18 PM
Just got my MixPre-6 yesterday and I think I've mostly got this thing figured out, but two questions remain:

1. How do I turn off the recording of the L-R Mix track? I just want to record 4 tracks. I figured out how to link channels 1 and 2, and 3 and 4, so I basically just want to end up with 2 stereo tracks which I do understand will be in a polywave file.
MENU-RECORD- SUB MENU-Rec L,R Mix-Deselect L&R (Off). You will still see the meters, but it will not record them. Pg 29 of the manual

Note that the record mode must be set to Advanced for this to be available.

What's the difference between OFF and OFF AND LINKED for the mix tracks?
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: aaronji on July 12, 2018, 12:36:52 PM
Sorry my post was not clear. I typed it up, and then right before posting, I reorganized it, and it reads like I was saying your reaction to the battery choice was weird. Not what I meant.

I meant that the behavior of mjwin's machine was weird!!!

No worries; I kind of figured it was something like that!

It now works correctly! (?) 

That's good to hear.  Out of curiosity, can you think of anything you may have done differently or did the gremlins exorcise themselves?
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: dallman on July 12, 2018, 12:41:52 PM
Just got my MixPre-6 yesterday and I think I've mostly got this thing figured out, but two questions remain:

1. How do I turn off the recording of the L-R Mix track? I just want to record 4 tracks. I figured out how to link channels 1 and 2, and 3 and 4, so I basically just want to end up with 2 stereo tracks which I do understand will be in a polywave file.
MENU-RECORD- SUB MENU-Rec L,R Mix-Deselect L&R (Off). You will still see the meters, but it will not record them. Pg 29 of the manual

Note that the record mode must be set to Advanced for this to be available.
In Basic mode, only the L/R mix bus will be recorded. (Also pg 29) If recording 4 channels you will already be in Advanced mode. ;D

What's the difference between OFF and OFF AND LINKED for the mix tracks?
There is no "OFF and LINKED" setting, there is a "LR LINKED" setting which means the Left Gain controls the the LR mix.

Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: mjwin on July 12, 2018, 03:19:16 PM
It now works correctly! (?) 

That's good to hear.  Out of curiosity, can you think of anything you may have done differently or did the gremlins exorcise themselves?

Well, the latter, I think. For a short while...   Next day I tried again & the problem was back. Then I saw:


Today I called tech-support and the tech suggested I try a reset which consisted of holding the headphone knob and the channel one knob down while powering up and keeping them held down until I got to the home screen.

Thanks for this.  Actually, I think we need to produce our own TS version of the user guide, but without all the important stuff left out lol!

So I tried the system reset, & got a screen which says:
"formatting settings, please wait" (takes about 30sec before home screen)

Which cleared the problem. Great. So at least the issue appears to be  software related & not the box itself. I plugged & unplugged the USB cable in various combinations of power up/down, and it continued to behave just fine.

Then I re-loaded my settings which I'd saved to SD card... But, on the next attempt at USB connection, it hung! 

At this point, I did the factory reset again, and all was fine once more.

So I figured the problem is something to do with my saved settings.  Fortunately the files are in .xml format, so easy to view.  Every parameter is specified explicitly, so it's easy to go through line by line & compare my personal settings with the default values. Nothing seems obviously amiss or corrupt,  though a few of the numerical parameters don't make much sense without specialist knowledge of the firmware. 

So this time I re-configured the settings manually & saved them. As yet, things are working ok.   So for some reason I might just have created a corrupt setup file the first time around.

And that, in a (rather large) nutshell, it where I'm at. But I'm treading cautiously...

Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: morst on July 12, 2018, 06:52:16 PM
Note that the record mode must be set to Advanced for this to be available.
In Basic mode, only the L/R mix bus will be recorded. (Also pg 29) If recording 4 channels you will already be in Advanced mode. ;D

What's the difference between OFF and OFF AND LINKED for the mix tracks?
There is no "OFF and LINKED" setting, there is a "LR LINKED" setting which means the Left Gain controls the the LR mix.

In v2.21 there is a record setting for the Rec L,R called "Off & Linked" - it's on page two of the Mix control options.
Page 1 has L&R Linked, L&R, L, R
Page 2 has Off, or Off & Linked
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: larrysellers on July 12, 2018, 07:05:27 PM
I passed a TC signal from my Fostex FR2 and it was received by the Mixpre 3. RCA TC output of the FR2 to the mini aux input of the Mixpre 3. Record trigger worked perfect too.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: dallman on July 13, 2018, 01:04:40 AM
Note that the record mode must be set to Advanced for this to be available.
In Basic mode, only the L/R mix bus will be recorded. (Also pg 29) If recording 4 channels you will already be in Advanced mode. ;D

What's the difference between OFF and OFF AND LINKED for the mix tracks?
There is no "OFF and LINKED" setting, there is a "LR LINKED" setting which means the Left Gain controls the the LR mix.

In v2.21 there is a record setting for the Rec L,R called "Off & Linked" - it's on page two of the Mix control options.
Page 1 has L&R Linked, L&R, L, R
Page 2 has Off, or Off & Linked
Sorry, I didn't realize there were some new screens.
Per Sound Devices:
The Rec L,R Off and Linked button links the Left and Right track and disarms both.
Seems silly, but maybe there is a reason I am just not seeing.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: edtyre on July 14, 2018, 03:37:34 PM
Can't get my MP3 to show up as an output usb device on my MAC, trying to use as headphone amp?
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: justme on July 14, 2018, 07:47:26 PM
Can't get my MP3 to show up as an output usb device on my MAC, trying to use as headphone amp?

When you connect the MP3 via USB-C to the Mac - Make sure the MP3 System setting for USB-C is set to Audio to enable it as a USB audio interface.
If it is set to Power Only the MP3 will not act as an USB I/O interface.

To enable the MP3 as a 5 channels Input and 2 channels Output interface - Make sure the System Setting for USB Audio is set to Normal. You will need to launch the macOS Audio Midi Setup and choose 6 Channels (and relaunch the Audio Midi app). Then you will have a 3 channel + LR Mix Input and 2 channels Output enabled.
If it is set to Stereo Out - the MP3 will act as a 2 channel Output only unit.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: edtyre on July 15, 2018, 01:01:09 PM
Can't get my MP3 to show up as an output usb device on my MAC, trying to use as headphone amp?

When you connect the MP3 via USB-C to the Mac - Make sure the MP3 System setting for USB-C is set to Audio to enable it as a USB audio interface.
If it is set to Power Only the MP3 will not act as an USB I/O interface.

To enable the MP3 as a 5 channels Input and 2 channels Output interface - Make sure the System Setting for USB Audio is set to Normal. You will need to launch the macOS Audio Midi Setup and choose 6 Channels (and relaunch the Audio Midi app). Then you will have a 3 channel + LR Mix Input and 2 channels Output enabled.
If it is set to Stereo Out - the MP3 will act as a 2 channel Output only unit.

Thanks for the advise, but i know all that. It just wont show up as a USB device, can't get it to mount to transfer a file. It has been this way since i bought
it brand new. IT won't work with any of my Macs. Here's a pic of my Midi Panel . BTW...latest firmware and latest Mac OS
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: justme on July 15, 2018, 01:14:38 PM
I'm a little confused here :)

Does it not show up as a USB Audio device and not even as a USB transfer mode even if you select File Transfer?
Do you have any other USB Audio devices connected at the same time?
In macOS you can set Finders prefs to not show external devices from the side bar and in the sidebar you can choose to hide any external units.

Which macOS do you use?
Which cable do you use to connect the MP3 with the Mac?

On my MBP 2015 with macOS 10.13.5 I've tried the included USB-C to dual USB A and they work.
I've also tried an Anker USB-C to USB A which also works properly.

What does the System Information and USB units show when you have the MP3 connected?
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: Gordon on July 15, 2018, 01:24:24 PM
in the mixpre settings are you going into system > file transfer?
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: edtyre on July 15, 2018, 01:41:08 PM
Thanks for the help. I am pretty much an expert user here, i admin dozens of macs.
My unit just doesn't work via any usb function, i will try another MP3 and cable(s) soon

Not going to use it as an interface anyway, just wanted to see what the excitement was
using as a usb headphone amp.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: justme on July 15, 2018, 02:07:24 PM
Cool. Then we pretty much to do the same :)

If you are lucky it's just a bad cable.
Otherwise it kind of sound like your MP3 need a closer checkout by SD. :/

Thanks for the help. I am pretty much an expert user here, i admin dozens of macs.
My unit just doesn't work via any usb function, i will try another MP3 and cable(s) soon

Not going to use it as an interface anyway, just wanted to see what the excitement was
using as a usb headphone amp.

Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: justme on July 15, 2018, 05:00:07 PM
I’m in search for some info.

Could anyone with a L- mount sled be able to measure the sled output terminal voltage when it holds a fully charged L-battery?
Does it measure 8.4V?
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: Chuck on July 16, 2018, 12:02:34 PM
So, am about to pull the trigger on a MixPre 6.

I've read the manual. Any advice on getting going quickly with this thing?
I've started reading all the threads, but it's daunting.

I'm assuming Advanced mode...
What connector are you guys using for external power? The full sized USB?
Can it make stereo tracks in pairs or is each track going to be mono?
Any rookie mistakes I can avoid right off the bat?
Things that are not obvious in the beginning?

Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: morst on July 16, 2018, 01:39:07 PM
I'm assuming Advanced mode...
What connector are you guys using for external power? The full sized USB?
Can it make stereo tracks in pairs or is each track going to be mono?
I use the USB C - C cable that came with my USB-C power pack (big fat Anker pack) or I use the USB-C -> USB A cable that came with that one when I power two channels off a smaller USB-A power pack.

I get stereo tracks on mine. I do suggest turning OFF the "L,R Mix" track, unless you need it for some reason. This way, when you only record 2 channels, you get a normal WAV instead of a multi-channel Poly Wav. Not a big deal to use the Poly Waves but you have to split them if you wanna flac 'em. (SD has a software app for that on their site)

Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: jbell on July 16, 2018, 02:31:09 PM
It records in polywave files!  One file with all your stereo tracks.  You can use Wave Agent (Free from SD) to separate the tracks into stereo pairs.  I run mine in custom mode so I can use the front knobs to control the gain.  Everything else in the menu I turn on advance.  It is easy to use and for me fairly intuitive.  I'd say once in hand mess with the settings and if you have problems post questions and everyone will get you fixed up. 

For batteries I use usb c> usb c with the suggested anker as a backup.

https://www.amazon.com/Anker-PowerCore-Ultra-High-Capacity-Portable/dp/B014ZO46LK/ref=sr_1_4?ie=UTF8&qid=1531765922&sr=8-4&keywords=Anker+usb+c+battery&dpID=41nBqHD%252BCfL&preST=_SY300_QL70_&dpSrc=srch

I have the L mount sled for my main battery power.  You can hot swap the batteries, which is nice.  I purchased the following batteries and they have worked great.

https://www.ebay.com/itm/Kastar-Battery-Charger-Sony-NP-F960-NP-F970-NP-F975-F950-BC-VM10-BC-VM50-BC-V615/262886954168?hash=item3d354894b8%3Am%3AmBCJ1E72Sn11dQ4ceT4UeNg&var=561885471462&_sacat=0&_nkw=Kastar+battery+charger+and+Sony+batteries&_from=R40&rt=nc&_trksid=m570.l1313

So, am about to pull the trigger on a MixPre 6.

I've read the manual. Any advice on getting going quickly with this thing?
I've started reading all the threads, but it's daunting.

I'm assuming Advanced mode...
What connector are you guys using for external power? The full sized USB?
Can it make stereo tracks in pairs or is each track going to be mono?
Any rookie mistakes I can avoid right off the bat?
Things that are not obvious in the beginning?
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: Gordon on July 16, 2018, 02:39:46 PM
It records in polywave files!  One file with all your stereo tracks.  You can use Wave Agent (Free from SD) to separate the tracks into stereo pairs.

but as Morst said if you only do 2 channels and l/r is turned off you get a stereo file not a poly.

Some software will handle poly but wavelab won't.  Once I got the correct workflow down for wave agent it only takes a second to both split and combine to make stereo files.  Below is how you make both 1&2 & 3&4 into stereo files.


(https://farm2.staticflickr.com/1801/42547094295_853e42fd5c.jpg) (https://flic.kr/p/27PJYPi)wa (https://flic.kr/p/27PJYPi) by Gordon Wilson (https://www.flickr.com/photos/gordonlw/), on Flickr
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: Gordon on July 16, 2018, 02:41:07 PM
for battery's I have 4 AA rechargeables in the sled as backup and use this.

https://www.amazon.com/gp/product/B01KYUDAN4/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

I can get about 8 hours off one.  keeping AA in enables hot swapping.

with this cable

https://www.amazon.com/gp/product/B01MSMOMAR/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: junkyardt on July 16, 2018, 03:12:56 PM
So, am about to pull the trigger on a MixPre 6.

I've read the manual. Any advice on getting going quickly with this thing?
I've started reading all the threads, but it's daunting.

I'm assuming Advanced mode...
What connector are you guys using for external power? The full sized USB?
Can it make stereo tracks in pairs or is each track going to be mono?
Any rookie mistakes I can avoid right off the bat?
Things that are not obvious in the beginning?

I just pulled the trigger on one recently myself. It's easier to learn it by actually sitting down and messing with the menu options yourself than it is to read the manual. Some things in the manual are under-explained or poorly explained, and annoyingly the manual refers to an early firmware version and thus doesn't refer to some menu options that are now available in v2.21.

As others have said, you can use the SD Wave Agent Beta software to split polywave files into stereo files. I was not able to figure out a way to do this splitting in Adobe Audition 3.0, which is what I use once I have a stereo 2-channel file. Has anyone found a way to set the MixPre to simply record into sets of 2-channel stereo files directly when using all the channels? It appears the polywave default is the only option. Not hugely annoying, but it'd be nice to cut out that extra step of using the SD software.

As someone else said, you'll likely want to set the overall mode to "custom" rather than "advanced", and then set channel, headphone, record and metadata options to "advanced" while setting gain to "basic". This is because using gain in advanced mode actually introduces functionality that is less than optimal for taping, as it forces you to set the gain for each channel by using the touch menu screens (and you can't see what the levels look like while you're setting the gain this way), and instead turns the knobs into fader knobs for adjusting the overall L-R mix. This is functionality that might be good for podcasters or some other applications, but for taping a show I just want the gain knobs to be gain knobs where I can see how the levels are changing in real-time when I adjust the gain. I set the L-R mix to off entirely, so the faders are completely unnecessary. If you're planning to use the L-R mix channels, you may want to consider whether setting gain to "advanced" is useful for you, though. I also set the outputs to "basic" because I won't be using the outputs and thus don't need that whole menu to be available. If you're going to be streaming or something though you might want the outputs menu set to "advanced" so you have those menu options.

You'll probably want to set channels 1 and 2 as linked, 3 and 4 as linked and 5 and 6 as linked. The star button is a wild card type of button that can be set to do several different things, but I find it's best to set it to take you to the screen for channels 5 and 6, since the screens for channels 5 and 6 are otherwise more tedious to get to. Also if you're going to be using channels 5 and 6 for a board patch or other line level signal, you'll want to set channels 5 and 6 to "aux in 1" (found under the channels 5 and 6 menu screen) and also (this time under the inputs menu screen) set "aux in mode" to "line". If "aux in mode" is set to "mic", it's telling the MixPre to provide 3v plug-in-power through that input.

Morst, I also was confused by the difference between "off" and "off and linked", but since I'm not using the mix tracks anyway it doesn't matter for me.

Lastly, is anyone else having trouble editing the headphone preset options once they're already set? I assume that for editing the HP presets you use the headphone volume knob to scroll left and right, then click in on the knob to either select or deselect a channel you want assigned to that preset, right? For me, pressing in on the HP knob works to select and deselect certain channels, but not the ones that were already selected for that preset, if that makes sense. In other words, the channels I selected the very first time I made that HP preset appear to be permanently locked to that preset. This seems like a bug to me, very weird!

There are still a few menu options I don't understand, such as the entire tone menu, the "phase" option under each channel, the difference between 1-2 and 1-2MS (for linking channels), and the option under the inputs menu called "MS Decode", which can be set to "ISOs & Mix" or "Mix Only". But I'm not worried about the stuff I don't understand, because I understand how to get it working fully for the purposes I'll be using it for.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: rigpimp on July 16, 2018, 04:23:39 PM
So, am about to pull the trigger on a MixPre 6.

I've read the manual. Any advice on getting going quickly with this thing?
I've started reading all the threads, but it's daunting.

I'm assuming Advanced mode...
What connector are you guys using for external power? The full sized USB?
Can it make stereo tracks in pairs or is each track going to be mono?
Any rookie mistakes I can avoid right off the bat?
Things that are not obvious in the beginning?

It should not be that hard to create a cheat sheet in Google Docs.  I will post my xml presets on google drive and link to them in the cheat sheet.  We can all make a google doc that can be modified by anyone.  I'll start it.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: dallman on July 16, 2018, 04:53:29 PM

Morst, I also was confused by the difference between "off" and "off and linked", but since I'm not using the mix tracks anyway it doesn't matter for me.

To Sound Devices:
In v2.21 there is a record setting for the Rec L,R called "Off & Linked" - it's on page two of the Mix control options.
Page 1 has L&R Linked, L&R, L, R
Page 2 has Off, or Off & Linked
Because it was added in the last firmware revision (give or take) It is not covered in the manual. Any insight is appreciated.


From Sound Devices (but incomplete):
The Record controls pertain to the functionality of the Left/Right mix tracks.  The L R buttons allow you to record arm only the left or only the right channel of the Left/Right mix tracks.  L & R record arms both L/R, while the Rec L, R L& R Linked button arms and links the L/R mix tracks.  A function you may find useful on Page 2 of the Rec L, R L& R Linked menu is the OFF button, which disarms recording on the L/R mix tracks.

Kind Regards,

Sean McMahon
Sound Devices, LLC


To Sound Devices:
Hi Sean,
 I understand what you are saying, but there is also a button that says "Off and Linked". This is next to the "off" button on page 2. That is the button I am asking about. Thanks!


From Sound Devices:
The Rec L,R Off and Linked button links the Left and Right track and disarms both.

Thank you and kind regards,

Sean McMahon
Sound Devices, LLC

Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: rippleish20 on July 16, 2018, 05:01:43 PM

To Sound Devices:
Hi Sean,
 I understand what you are saying, but there is also a button that says "Off and Linked". This is next to the "off" button on page 2. That is the button I am asking about. Thanks!


From Sound Devices:
The Rec L,R Off and Linked button links the Left and Right track and disarms both.

Thank you and kind regards,

Sean McMahon
Sound Devices, LLC

Oy, that's a helpful answer. 
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: Chuck on July 16, 2018, 08:12:45 PM
Well, I got through this thread and I'll most likely pull the trigger tomorrow. Lots of great info here.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: jbell on July 17, 2018, 09:10:10 AM
You won't be disappointed!!  It is a great deck.

Well, I got through this thread and I'll most likely pull the trigger tomorrow. Lots of great info here.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: Chuck on July 17, 2018, 09:35:31 AM
I hope so. I JUST ordered it. :)
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: Chuck on July 17, 2018, 12:30:49 PM
Reading up like crazy now...

Can anyone explain that Y-cable that comes with the MixPre-6? Is that only useful when powering from a computer? I assume one USB-A connector supplies power and the other allows data transfer? All that can't be done with one USB-A to USB-C cable?
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: Gordon on July 17, 2018, 12:55:07 PM
the y cable is useless to me.  it's HUGE and bulky and I've heard of others having issues with it.  My pc has a usb c so I go c to c from the mp6 to transfer files.

edit:  for transfer purposes any usb a to c should work in theory.  You may get the "low power" warning but it doesn't matter for transfer.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: justme on July 17, 2018, 01:13:01 PM
It’s only useful for those lacking usb-c with proper PD.
The Y-cable uses power and data from one USB A connector and power only from the other. A single USB A connector can not properly supply the MP with power for all inputs, +48 and other features.

Yes. It’s way beyond thick and annoying to use.

Reading up like crazy now...

Can anyone explain that Y-cable that comes with the MixPre-6? Is that only useful when powering from a computer? I assume one USB-A connector supplies power and the other allows data transfer? All that can't be done with one USB-A to USB-C cable?
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: Chuck on July 17, 2018, 01:15:00 PM
It’s only useful for those lacking usb-c with proper PD.
The Y-cable uses power and data from one USB A connector and power only from the other. A single USB A connector can not properly supply the MP with power for all inputs, +48 and other features.

Yes. It’s way beyond thick and annoying to use.

Reading up like crazy now...

Can anyone explain that Y-cable that comes with the MixPre-6? Is that only useful when powering from a computer? I assume one USB-A connector supplies power and the other allows data transfer? All that can't be done with one USB-A to USB-C cable?

Thanks guys. That's what I figured.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: Gordon on July 17, 2018, 01:21:53 PM
A single USB A connector can not properly supply the MP with power for all inputs, +48 and other features.


not entirely true.  I have a right angle single a to c that powers with the green light and works perfect.  unfortunately I don't know the make/model/link to the cable as it came in a package with my gently used mp6.  seller can't find it either.

Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: justme on July 17, 2018, 01:24:38 PM
Post a pic of it and I’ll get into it and make sure I’ll find it. :)

A single USB A connector can not properly supply the MP with power for all inputs, +48 and other features.


not entirely true.  I have a right angle single a to c that powers with the green light and works perfect.  unfortunately I don't know the make/model/link to the cable as it came in a package with my gently used mp6.  seller can't find it either.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: sos on July 17, 2018, 01:31:21 PM
It was a random eBay purchase (one of several) bought back in the early days leading up to the deck's release, when people were trying to figure out what would work/not. Chinese surprise...
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: rigpimp on July 17, 2018, 01:31:45 PM
A single USB A connector can not properly supply the MP with power for all inputs, +48 and other features.


not entirely true.  I have a right angle single a to c that powers with the green light and works perfect.  unfortunately I don't know the make/model/link to the cable as it came in a package with my gently used mp6.  seller can't find it either.

Me too.

Cerrxian 1m Right Angle USB 3.0 Type A Male to USB 3.1 Type C Male Left & Right Angle USB Data Sync and Charge Adapter Cable https://www.amazon.com/dp/B06XP5T78F/ref=cm_sw_r_cp_apa_0GItBbQ7CXSX6
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: edtyre on July 17, 2018, 02:37:11 PM
Thanks for the help. I am pretty much an expert user here, i admin dozens of macs.
My unit just doesn't work via any usb function, i will try another MP3 and cable(s) soon

Not going to use it as an interface anyway, just wanted to see what the excitement was
using as a usb headphone amp.

The dual cable was bad right out of the box, works perfect with usb-c to usb -a cable.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: larrysellers on July 17, 2018, 02:46:44 PM
Glad to hear you got it working Ed.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: dynamicalories on July 17, 2018, 04:02:56 PM
I've only done a couple shows so far but I've been fine running Battery > USB A > USB C > MixPre-6 with the supplied cable.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: K.C. on July 17, 2018, 05:57:19 PM
I can't get my MP6 to play back any files. They play fine on my PC, but not on the recorder. What am I missing?
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: morst on July 17, 2018, 06:18:01 PM
I can't get my MP6 to play back any files. They play fine on my PC, but not on the recorder. What am I missing?
Make sure you have firmware v2.21. There was a bug where you lost the ability to play projects back if the card was removed from the MixPre.

I've only done a couple shows so far but I've been fine running Battery > USB A > USB C > MixPre-6 with the supplied cable.

That one is pretty big, and if I don't need to use it, I'd rather tote something smaller!
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: K.C. on July 17, 2018, 06:51:37 PM
I can't get my MP6 to play back any files. They play fine on my PC, but not on the recorder. What am I missing?
Make sure you have firmware v2.21. There was a bug where you lost the ability to play projects back if the card was removed from the MixPre.

I'm on v2.21, so not sure why it doesn't work
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: checht on July 17, 2018, 07:57:14 PM
How about a library of configs to share?

Might be helpful for folks new to the MixPre series.

Just save a config to SD, then copy it to PC in file transfer mode, then upload.

Anyone think this would be useful?
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: morst on July 17, 2018, 09:45:12 PM
I can't get my MP6 to play back any files. They play fine on my PC, but not on the recorder. What am I missing?
Do they show up on the recorder and not play? Or do they simply not appear? The bug with the old firmware is that they would not appear, once the card was re-inserted into the MixPre.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: K.C. on July 17, 2018, 10:00:41 PM
I can't get my MP6 to play back any files. They play fine on my PC, but not on the recorder. What am I missing?
Do they show up on the recorder and not play? Or do they simply not appear? The bug with the old firmware is that they would not appear, once the card was re-inserted into the MixPre.

They show up on the recorder, but do not play
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: edtyre on July 19, 2018, 05:36:12 PM
Forgive me if this has been mentioned before, but this thing is a GREAT headphone amp.
I was using a Mytek DSD DAC (1500) into a Rudistar (italian) headphone amp (900)

This might sound better, need more listening but it's very good. Dont like the midget knob.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: aaronji on July 19, 2018, 06:29:18 PM
Dont like the midget knob.

You can get a 3D printed knob extender here (https://store.lom.audio/products/mixpre-knob). Cheap, even with shipping, but he also provides the files to print it yourself.
Title: Re: Sound Devices MixPre-3 and 6, Part 5
Post by: sos on July 19, 2018, 07:14:37 PM
Sweet, just ordered a clear one ($9.18, shipped, from Slovakia)...

Thx, aaronji!