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Author Topic: Tascam DR-70D 4-channel audio recorder (Part 8)  (Read 3429 times)

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Offline voltronic

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Tascam DR-70D 4-channel audio recorder (Part 8)
« on: February 14, 2017, 07:34:17 AM »
Tascam DR-70D Product Page
Reference Manual
Tested Media List (using a card from this list is strongly recommended)

DR-70D FAQ (includes recommended settings, hardware info, list of known issues, etc.)
Modification Discussion Thread

Previous discussion threads:

Part 1
Part 2
Part 3
Part 4
Part 5
Part 6
Part 7
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #1 on: February 14, 2017, 07:28:32 PM »
With firmware 1.14 and tested media, this machine is great.

Unfortunately, with such a small list of tested media, approved cards are already becoming unavailable.

B&H and Amazon show the 32GB Panasonic RP-SDUC32GAK as unavailable.

Think about what's happened to the PCM-M10, and stock up on cards. I am going to buy the only 128 that works while I still can.

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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #2 on: February 14, 2017, 08:57:17 PM »
With firmware 1.14 and tested media, this machine is great.

Unfortunately, with such a small list of tested media, approved cards are already becoming unavailable.

B&H and Amazon show the 32GB Panasonic RP-SDUC32GAK as unavailable.

Think about what's happened to the PCM-M10, and stock up on cards. I am going to buy the only 128 that works while I still can.

It looks like the firmware is not getting updated anymore; last update was 8 months ago.  1.14 is solid, but it would have been nice if Tascam could have implemented the usability fixes we've been hoping for.

About cards: Amazon is not very reliable source.  There are countless stories out there of people getting fakes, and the fakes are getting really hard to spot.

The only way you can be sure you're getting legit SD cards are to buy from a vendor that's on the SD card manufacturer's authorized vendor list.
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #3 on: February 15, 2017, 12:23:47 AM »
are there reports of counterfeit cards in amazon's "frustration-free" packaging? I would be pretty frustrated if I got a fake from them!  :-\
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #4 on: February 15, 2017, 02:58:26 PM »
are there reports of counterfeit cards in amazon's "frustration-free" packaging? I would be pretty frustrated if I got a fake from them!  :-\

Maybe that's the safe way to go, then you know it's actually coming from Amazon.  The reports I've read of fakes may very well have all been third-parties who sold through Amazon.

I also see that Amazon is an authorized dealer for SanDisk, but again be sure you're really buying from them.
https://www.sandisk.com/about/where-to-buy
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #5 on: February 15, 2017, 03:13:24 PM »
I also see that Amazon is an authorized dealer for SanDisk, but again be sure you're really buying from them.
https://www.sandisk.com/about/where-to-buy
thank you! I actually ordered a cosmetically-damaged one that had been previously returned, and it's supposed to arrive tomorrow from "Amazon Warehouse Deals."

I will definitely be skeptical, and make efforts to verify the serial number before I trust that the card is as-labeled!
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #6 on: February 15, 2017, 04:47:40 PM »
I also see that Amazon is an authorized dealer for SanDisk, but again be sure you're really buying from them.
https://www.sandisk.com/about/where-to-buy
thank you! I actually ordered a cosmetically-damaged one that had been previously returned, and it's supposed to arrive tomorrow from "Amazon Warehouse Deals."

I will definitely be skeptical, and make efforts to verify the serial number before I trust that the card is as-labeled!

See, that could be sketchy.  Given its questionable provenance, I would also run it through a capacity test (H2Testw or FakeFlashTest) and also a read/write benchmark (Crystal Disk Mark).  Fake cards are usually lying about one or both of those things.

All of these utilities can be found here:
http://taperssection.com/index.php?topic=176802.0
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #7 on: February 15, 2017, 08:30:27 PM »
See, that could be sketchy.  Given its questionable provenance, I would also run it through a capacity test (H2Testw or FakeFlashTest) and also a read/write benchmark (Crystal Disk Mark).  Fake cards are usually lying about one or both of those things.
Aha!

ANOTHER very good point. Thanks, Volt! We must be thorough!

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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #8 on: February 16, 2017, 03:53:30 PM »
The inner package was a sealed envelope with a bar code and an Amazon logo sticker. Inside that was an SD card in a small ziploc bag. The label looks correct and I guess the sticker had some gunk on it that the previous buyer didn't like?

Tests out OK on speed via black magic (write 75gb/s, read 87) , I have not done a brute capacity test (fill it up!) or run the windows utilities yet, but I just started creating a 120GB disk image on it...
« Last Edit: February 16, 2017, 04:01:29 PM by morst »
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #9 on: February 17, 2017, 08:08:50 AM »

Only 61 hours of record time left on that puppy!

Man, things sure have changed since I was sweating changing out mini discs...
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #10 on: February 17, 2017, 08:44:46 AM »

Only 61 hours of record time left on that puppy!

Man, things sure have changed since I was sweating changing out mini discs...

QFMFT. On my MZ-R70 you also had to swap in a fresh AA with every mini disk......
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #11 on: February 17, 2017, 11:37:21 PM »
The inner package was a sealed envelope with a bar code and an Amazon logo sticker. Inside that was an SD card in a small ziploc bag. The label looks correct and I guess the sticker had some gunk on it that the previous buyer didn't like?

Tests out OK on speed via black magic (write 75gb/s, read 87) , I have not done a brute capacity test (fill it up!) or run the windows utilities yet, but I just started creating a 120GB disk image on it...

I bought that exact card from Amazon through SanDisk and I got mine in the original packaging and it came it MINT condition! Yours looks a lil beat up to me? But Ive EASILY run battery tests for over 150+ hours on the new 128gb that I just got for XMas, and its been NOTHING BUT 100% RELIABLE! I have ONLY been using my 128 & 64gb SanDisk Extreme Pro SD Cards! I still have a 32gb PNY Card that has worked flawlessly too, but I feel MUCH more comfortable and have more peace of mind since switchimng over to the SanDisk Extreme Pro's!

And FWIW, I would ONLY buy through Amazon and through SanDisk if i were you ;)
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #12 on: February 18, 2017, 02:54:13 AM »
Yours looks a lil beat up to me?
(snip)
And FWIW, I would ONLY buy through Amazon and through SanDisk if i were you ;)
Beat up? Well, the sticker has a smudge that I can barely see in real life, but the flatbed scanner reveals all!

This is through amazon, though it's a returned - stock item that said it was blemished.

I already have an approved Sandisk 16 and a Panasonic 32. This is more for insurance. Seems like a genuine item, but in the name of science, I think I'll email Sandisk customer support with the serial number just to verify it...

¯\_(ツ)_/¯
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #13 on: February 27, 2017, 07:05:02 PM »
Seems like a genuine item, but in the name of science, I think I'll email Sandisk customer support with the serial number just to verify it...
Sandisk has Web Chat. Very handy.

"Evan G.: ... based on the information and pictures submitted for review, we have determined that this is an authentic SanDisk® retail brand product"

And now for the bad news:

Tascam DR70D is shown as a Closeout item at Adorama Camera, the only retailer listed on Tascam's official WHERE TO BUY page! http://tascam.com/product/dr-70d/buy_now/
In fact, that link goes to a bundle which is not available, but the Adorama site still sells the recorder...

https://www.adorama.com/tsdr70d.html


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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #14 on: February 27, 2017, 07:53:58 PM »
I wouldn't put too much into the fact that Adorama is the only authorized retailer, and they are listing it as a "closeout."  Being that they haven't updated the 70D firmware or tested any new cards in a long time, I imagine no one is paying attention to its web page either.

It very well may be slated to be discontinued, which if nothing else will drive more customers to the DR-701D (IMO overpriced given the competition or even Tascam's own DR-680 mkII).  But I really don't think it's been axed just yet.

A quick search shows the DR-70D currently in stock at:

Amazon
American Musical
B&H
Broadcast Supply
Full Compass
Trew Audio
Markertek
Sam Ash
Zzounds

...but out of stock at:
Sweetwater
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #15 on: February 27, 2017, 08:22:51 PM »
Interesting - perhaps Adorama is paring down it's ProSound inventory - there are many items slated as disco'd.
You could very well be correct.

It has been suggested in  other threads that the 701 pre-amps are a bit better quality. That coupled with a good form factor, time code and camera trigger may make the
701 workable. But - it here is an update to the DR70 at the same pricepoint - i would consider buying 2 (1 as a spare) in lieu of the 701.

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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #16 on: February 27, 2017, 08:39:43 PM »
Interesting - perhaps Adorama is paring down it's ProSound inventory - there are many items slated as disco'd.
You could very well be correct.

It has been suggested in  other threads that the 701 pre-amps are a bit better quality. That coupled with a good form factor, time code and camera trigger may make the
701 workable. But - it here is an update to the DR70 at the same pricepoint - i would consider buying 2 (1 as a spare) in lieu of the 701.

NAB is end of April, will take a loaner to Europe for the first round...

The 701D certainly does have better preamps than the DR-70D - for one thing, the opamps it uses are superior.  But the DR-680 mkII will also have better preamps, and for the same $600 price you get six of them.  I don't know that they are the same preamp circuit, but the critical specs are identical (EIN, distortion, S/N ratio).  There's a local professional location sound recording company I know that uses the 680 for low-track-count sessions.  So this is why I say that unless you need the camera triggering, the DR-680 mkII presents a better value from a pure audio recording standpoint.
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #17 on: February 27, 2017, 09:52:40 PM »
Hmm, form factor over audio quality... Now hoping there is a newer middle ground model nearing release.

Having a smaller set up makes run and gunshooting easier - especially in "unfriendly" environments.
But shyte audio is a killer...

In a perfect world, i'd just go with a BMC Ursa 4.6 and a Sound Devices recorder. But that set up makes for a larger target profile.

Do you have any idea what the Tascam product release schedule is?

Thank you for you insights - not being a sound guy - they are quite helpful.
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #18 on: February 27, 2017, 11:10:48 PM »
If Tascam follows any discernable pattern concerning when they release a new recorder, I haven't figured it out.  I'm also not sure that you can tell when Tascam is discontinuing something based on Adorama placing it on closeout.  B&H isn't showing any closeout on it.

The other thing is the 70d price is hovering around $299.  There was a point when B & H was selling it for under $200 including a copy of Sony SoundForge software. 

I think you should just order based on your expected needs and use.  The 70d can be powered by a cell phone battery.  The 680 is a 12v recorder so the external battery powering options are not as plentiful and inexpensive as the 70d.  The 70d is also much more compact. 

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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #19 on: February 28, 2017, 09:10:38 AM »
Curious that it jumped 1/3 in price. At $200 it would have been a no brainer.

Thanks for info - my mics for this kit run on either phantom or double AA (Rodes ntg2 & ntg4, senny G3s, upgrading to the AVXs).
It's going to come down to 701 vs 70 price vs quality value analysis...

Ordered the 70d today for a test run....
Now to delve into this thread for operating tips... Grin.



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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #20 on: March 01, 2017, 05:18:37 AM »
My two 70D's have been NOTHING but 100% reliable [*knock on wood*] with my SanDisk Extreme Pro SD Cards! Ive been running battery tests and recording on my 128gb SanDisk card for over 200 hours the past few weeks, and as ALWAYS, the 70D has performed 100% flawlessly ;D
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #21 on: March 01, 2017, 08:57:18 AM »
My two 70D's have been NOTHING but 100% reliable [*knock on wood*] with my SanDisk Extreme Pro SD Cards! Ive been running battery tests and recording on my 128gb SanDisk card for over 200 hours the past few weeks, and as ALWAYS, the 70D has performed 100% flawlessly ;D

Ditto. I upgraded to the 1.14 firmware before I ever used it (well over a year ago) and it has preformed flawlessly.
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #22 on: March 01, 2017, 06:50:20 PM »
Curious that it jumped 1/3 in price. At $200 it would have been a no brainer.

Thanks for info - my mics for this kit run on either phantom or double AA (Rodes ntg2 & ntg4, senny G3s, upgrading to the AVXs).
It's going to come down to 701 vs 70 price vs quality value analysis...

Ordered the 70d today for a test run....
Now to delve into this thread for operating tips... Grin.

$299 was pretty much the regular street price until some vendors would put it on big discounts every few months.

For operating tips, you can find a quick reference in the DR-70D FAQ (link in my signature).  The manual is not very well written, and I recently revised the menu reference you'll find in that thread because I was having trouble remembering what does what in the menu.

 
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #23 on: March 08, 2017, 02:03:25 PM »
I'll be taking my new 70d on it's maiden voyage tomorrow night.  Playing around with it today trying to drain the usb battery.  key word trying ;)  I have it sitting on my desk recording with the internal mics.  anyway when I came back up from lunch it was turned off.  Battery still has over 50% and there are internal AA as backup.  I turned it back on and saw the card was full.  So I'm guessing the card filled up so it went idle and then turned itself off after 30 minutes.  does this sound right?
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #24 on: March 08, 2017, 02:44:51 PM »
I'll be taking my new 70d on it's maiden voyage tomorrow night.  Playing around with it today trying to drain the usb battery.  key word trying ;)  I have it sitting on my desk recording with the internal mics.  anyway when I came back up from lunch it was turned off.  Battery still has over 50% and there are internal AA as backup.  I turned it back on and saw the card was full.  So I'm guessing the card filled up so it went idle and then turned itself off after 30 minutes.  does this sound right?

I never ran a card full, so I can't answer that. But if there is anything wrong with the unit it can be returned for a full refund.
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #25 on: March 08, 2017, 02:56:37 PM »
Curious that it jumped 1/3 in price. At $200 it would have been a no brainer.

Thanks for info - my mics for this kit run on either phantom or double AA (Rodes ntg2 & ntg4, senny G3s, upgrading to the AVXs).
It's going to come down to 701 vs 70 price vs quality value analysis...

Ordered the 70d today for a test run....
Now to delve into this thread for operating tips... Grin.

$299 was pretty much the regular street price until some vendors would put it on big discounts every few months.

For operating tips, you can find a quick reference in the DR-70D FAQ (link in my signature).  The manual is not very well written, and I recently revised the menu reference you'll find in that thread because I was having trouble remembering what does what in the menu.
[/qtill uote]

I've read some of the different threads and through the FAQ, but still unsure about the pan feature.  I doubt I'll run four channel so for two channels in XLR or stereo mini input what its the recommended pan setting? 


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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #26 on: March 08, 2017, 03:02:28 PM »
I'll be taking my new 70d on it's maiden voyage tomorrow night.  Playing around with it today trying to drain the usb battery.  key word trying ;)  I have it sitting on my desk recording with the internal mics.  anyway when I came back up from lunch it was turned off.  Battery still has over 50% and there are internal AA as backup.  I turned it back on and saw the card was full.  So I'm guessing the card filled up so it went idle and then turned itself off after 30 minutes.  does this sound right?

I never ran a card full, so I can't answer that. But if there is anything wrong with the unit it can be returned for a full refund.

Thanks but I'm pretty sure that's what happened.  It makes sense anyway ;)  Just trying to confirm!
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #27 on: March 08, 2017, 03:26:25 PM »
So I'm guessing the card filled up so it went idle and then turned itself off after 30 minutes.  does this sound right?
yes, the 30-minute idle shutdown will save the AA's, in case your battery pack dies too.
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #28 on: March 08, 2017, 03:36:11 PM »
Under BASIC > PAN
Left 12 = left channel only, Right 12 = right channel only.

Default should be input channels 1 & 3 go to Left 12, inputs 2 & 4 would be Right 12

Zero is in the center (mono)


I've read some of the different threads and through the FAQ, but still unsure about the pan feature.  I doubt I'll run four channel so for two channels in XLR or stereo mini input what its the recommended pan setting?
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #29 on: March 09, 2017, 04:35:17 PM »
if one were trying to get all levels from an external pre where would you start the level knobs on the 70d?  all the way down without turning it off?

For sbd feeds where's a good place to start?
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #30 on: March 09, 2017, 09:13:57 PM »
Under BASIC > PAN
Left 12 = left channel only, Right 12 = right channel only.

Default should be input channels 1 & 3 go to Left 12, inputs 2 & 4 would be Right 12

Zero is in the center (mono)


I've read some of the different threads and through the FAQ, but still unsure about the pan feature.  I doubt I'll run four channel so for two channels in XLR or stereo mini input what its the recommended pan setting?

...And you can safely ignore the PAN setting, as it has no effect unless you're recording in 2MIX mode (a 4 > 2 channel downmix, I don't recommend it).
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #31 on: March 10, 2017, 04:28:51 PM »
Check out the DR-70D mic input noise measurements at Avisoft
http://www.avisoft.com/recordertests.htm 

These results put the DR-70D right at the top of the list for quiet mic inputs.
Also amazing that the EIN measured the same for both high and mid-level gain.
Super impressive for a $300 deck.

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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #32 on: March 10, 2017, 04:49:44 PM »
Check out the DR-70D mic input noise measurements at Avisoft
http://www.avisoft.com/recordertests.htm 

These results put the DR-70D right at the top of the list for quiet mic inputs.
Also amazing that the EIN measured the same for both high and mid-level gain.
Super impressive for a $300 deck.

Damn. That's wild.
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #33 on: March 10, 2017, 07:08:43 PM »
Wow nice specs!! 
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #34 on: March 11, 2017, 03:37:14 AM »
...And you can safely ignore the PAN setting, as it has no effect unless you're recording in 2MIX mode (a 4 > 2 channel downmix, I don't recommend it).

D'oh!!

 :facepalm:
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #35 on: March 11, 2017, 09:06:47 AM »
...And you can safely ignore the PAN setting, as it has no effect unless you're recording in 2MIX mode (a 4 > 2 channel downmix, I don't recommend it).

D'oh!!

 :facepalm:

Not to a 70d newb.  I don't know what pan is in a recorder.  So, I wouldn't know why I would use it or how to.

Thanks anyway.


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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #36 on: March 11, 2017, 09:07:52 AM »
Check out the DR-70D mic input noise measurements at Avisoft
http://www.avisoft.com/recordertests.htm 

These results put the DR-70D right at the top of the list for quiet mic inputs.
Also amazing that the EIN measured the same for both high and mid-level gain.
Super impressive for a $300 deck.

This almost seems to good to be true, although I've always found the preamps plenty quiet as long as HIGH+ gain is avoided.
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #37 on: March 11, 2017, 12:18:04 PM »
The DR100mkiii is further down the list below the 70d and the 680? 

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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #38 on: March 13, 2017, 12:53:12 PM »
Check out the DR-70D mic input noise measurements at Avisoft
http://www.avisoft.com/recordertests.htm 

These results put the DR-70D right at the top of the list for quiet mic inputs.
Also amazing that the EIN measured the same for both high and mid-level gain.
Super impressive for a $300 deck.

This almost seems to good to be true, although I've always found the preamps plenty quiet as long as HIGH+ gain is avoided.

According to this chart, the dr70d should allow for higher resolution than a SD 722.
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #39 on: March 13, 2017, 01:10:41 PM »
Check out the DR-70D mic input noise measurements at Avisoft
http://www.avisoft.com/recordertests.htm 

These results put the DR-70D right at the top of the list for quiet mic inputs.
Also amazing that the EIN measured the same for both high and mid-level gain.
Super impressive for a $300 deck.

This almost seems to good to be true, although I've always found the preamps plenty quiet as long as HIGH+ gain is avoided.

According to this chart, the dr70d should allow for higher resolution than a SD 722.

Considering there is 10 years between the technology in those devices...not so hard to believe.
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #40 on: March 13, 2017, 02:43:46 PM »
Check out the DR-70D mic input noise measurements at Avisoft
http://www.avisoft.com/recordertests.htm 

These results put the DR-70D right at the top of the list for quiet mic inputs.
Also amazing that the EIN measured the same for both high and mid-level gain.
Super impressive for a $300 deck.

This almost seems to good to be true, although I've always found the preamps plenty quiet as long as HIGH+ gain is avoided.

According to this chart, the dr70d should allow for higher resolution than a SD 722.

Considering there is 10 years between the technology in those devices...not so hard to believe.

Yes, but given the difference in MSRP, it's still interesting to note.

I wonder if SD will produce something to replace the 7XX series, and compete with the zoom.
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #41 on: March 13, 2017, 03:42:04 PM »
The DR100mkiii is further down the list below the 70d and the 680?

Yes, I find that strange too, since Tascam claims to have greatly improved the DR100mk3's preamps.

And where does this put the DR-701D?
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #42 on: March 13, 2017, 05:22:22 PM »
Not to a 70d newb.  I don't know what pan is in a recorder.  So, I wouldn't know why I would use it or how to.

Thanks anyway.

In general, the Pan feature assigns individual channels to either left, right, or somewhere in between.

According to what Volt posted, unless you're mixing your inputs for a real-time output using the 2Mix feature, any Pan setting will be ignored by the unit. If you DO want to mix using 2Mix, Left 12 is full left with no right channel output, and Right 12 is full right, with no left channel output.

As Volt suggests, when recording direct to tracks (NOT using the 2Mix feature) Input channels 1&3 will automatically be assigned to pure left, and channels 2&4 will be assigned pure right.

Does this make sense?
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #43 on: March 13, 2017, 08:29:25 PM »
Check out the DR-70D mic input noise measurements at Avisoft
http://www.avisoft.com/recordertests.htm 

These results put the DR-70D right at the top of the list for quiet mic inputs.
Also amazing that the EIN measured the same for both high and mid-level gain.
Super impressive for a $300 deck.

This almost seems to good to be true, although I've always found the preamps plenty quiet as long as HIGH+ gain is avoided.

According to this chart, the dr70d should allow for higher resolution than a SD 722.

Considering there is 10 years between the technology in those devices...not so hard to believe.

Yes, but given the difference in MSRP, it's still interesting to note.

I wonder if SD will produce something to replace the 7XX series, and compete with the zoom.

Not to mention the difference in quality of the actual components used in the units which has something to do with that price difference, 10 years technology difference notwithstanding.

I'm a regular user of the 70D, but have a hard time believing these test results unless they are verified by others.

Here's food for thought: Tascam lists the EIN as "-120 dB or less" in their own specifications, yet Avisoft shows -129 dB which is not a tiny difference.  Wouldn't you expect the manufacturer have the best-case-scenario when listing specs?
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #44 on: March 13, 2017, 08:41:53 PM »
Check out the DR-70D mic input noise measurements at Avisoft
http://www.avisoft.com/recordertests.htm 

These results put the DR-70D right at the top of the list for quiet mic inputs.
Also amazing that the EIN measured the same for both high and mid-level gain.
Super impressive for a $300 deck.

This almost seems to good to be true, although I've always found the preamps plenty quiet as long as HIGH+ gain is avoided.

According to this chart, the dr70d should allow for higher resolution than a SD 722.

Considering there is 10 years between the technology in those devices...not so hard to believe.

Yes, but given the difference in MSRP, it's still interesting to note.

I wonder if SD will produce something to replace the 7XX series, and compete with the zoom.

Not to mention the difference in quality of the actual components used in the units which has something to do with that price difference, 10 years technology difference notwithstanding.

I'm a regular user of the 70D, but have a hard time believing these test results unless they are verified by others.

Here's food for thought: Tascam lists the EIN as "-120 dB or less" in their own specifications, yet Avisoft shows -129 dB which is not a tiny difference.  Wouldn't you expect the manufacturer have the best-case-scenario when listing specs?

Volt - you should send them your modd'ed DR-70D...it should blow them all away!!!
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #45 on: March 14, 2017, 04:56:01 AM »
;D

The thing is, as I've said before many times in the modification discussion, that the mod didn't affect the noise level at all; it just improved the sound quality in other ways (treble clarity / extension, transients).  Jim Williams, who designed the mod I have, stated that noise performance of the 70D is a function of the tiny and cheap input transistors it uses.

Given my experience with my modded deck it should be noted that EIN is not the only thing to consider when evaluating the sound quality of a unit.  I think the DR-70D has rather quiet preamps, especially for its price.  But I find it very hard to believe that it performs better than a SD 722.
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #46 on: March 14, 2017, 04:21:38 PM »
Checking in.  Just got a 70D from raoulduke in the yard sale.  Very cool little machine.  Probably run it this weekend for Wilco at the Beacon.  I can run my FR2-LE or my SD MP-2/PCM-M-10 with my eyes closed, but this little thing is a little more complicated.  I've read through most of these posts (8 parts - really?) and the manual, etc, still have a couple questions, if you'll indulge me....

Firmware is 1.14, I'm waiting on an approved card, I'll have a 5V power bank, plus AA batteries in the unit (seamless power swap if the powerbank dies, right? nice feature).  I'll be running 4 mics (AKG ck63s and ck2s) 17th row center on the floor.  I figure if the gain is MID I'll start at noon on the gain knobs....

So, I arm all 4 channels, set preamp gain on MID, set the input to XLR/TRS, set the input gain to MIC+PHANTOM, set Phantom to 48V.......limiter, lowcut, delay and phase are all off, file format BWAV 24/48, battery on NIMH...man, a lotta settings scattered throughout a bunch of different menus...... :-\

One thing I don't understand - is File Type - mono or stereo?   I'm guessing stereo will give me two stereo files - 1/2 and 3/4 right?  (I'll want to do the mix down post in Reaper).

The line out, I'm stuck with the mixdown of four channels (same as 2MIX?) based on the levels set, right?

I'm thinking of running the ck63's through the MP2, and feeding the DR70 a line in on 1/2 from the tape out, and running an M-10 safety from the MP2 XLR outs, which I know are hot, but I think the M-10 line in can handle them (and the DR70 can't) is that right?

I'll probably man up and skip the MP2 and just run all 4 channels through the 70D.  We'll see.

Advice, tips and anecdotes welcome.....
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #47 on: March 14, 2017, 04:32:21 PM »
Checking in.  Just got a 70D from raoulduke in the yard sale.  Very cool little machine.  Probably run it this weekend for Wilco at the Beacon.  I can run my FR2-LE or my SD MP-2/PCM-M-10 with my eyes closed, but this little thing is a little more complicated.  I've read through most of these posts (8 parts - really?) and the manual, etc, still have a couple questions, if you'll indulge me....

Firmware is 1.14, I'm waiting on an approved card, I'll have a 5V power bank, plus AA batteries in the unit (seamless power swap if the powerbank dies, right? nice feature).  I'll be running 4 mics (AKG ck63s and ck2s) 17th row center on the floor.  I figure if the gain is MID I'll start at noon on the gain knobs....

So, I arm all 4 channels, set preamp gain on MID, set the input to XLR/TRS, set the input gain to MIC+PHANTOM, set Phantom to 48V.......limiter, lowcut, delay and phase are all off, file format BWAV 24/48, battery on NIMH...man, a lotta settings scattered throughout a bunch of different menus...... :-\

One thing I don't understand - is File Type - mono or stereo?   I'm guessing stereo will give me two stereo files - 1/2 and 3/4 right?  (I'll want to do the mix down post in Reaper).

The line out, I'm stuck with the mixdown of four channels (same as 2MIX?) based on the levels set, right?

I'm thinking of running the ck63's through the MP2, and feeding the DR70 a line in on 1/2 from the tape out, and running an M-10 safety from the MP2 XLR outs, which I know are hot, but I think the M-10 line in can handle them (and the DR70 can't) is that right?

I'll probably man up and skip the MP2 and just run all 4 channels through the 70D.  We'll see.

Advice, tips and anecdotes welcome.....

Skip the MP2. You can have all that stuff set before you go to the show. At the show, just turn it on, hit the menu button 4 times to confirm you want all 4 inputs to have phantom, then hit record when you're ready to go. easy peasy.
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #48 on: March 14, 2017, 04:41:29 PM »
So I use STEREO, not MONO, and I get two stereo tracks which I can later mix down, right?

and the Mic Input knobs don't work when the HOLD switch is on - right?  (that kinda sucks, but I can live with it).
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #49 on: March 14, 2017, 05:01:25 PM »
So I use STEREO, not MONO, and I get two stereo tracks which I can later mix down, right?

and the Mic Input knobs don't work when the HOLD switch is on - right?  (that kinda sucks, but I can live with it).

The gotcha on the HOLD is that if you move the level knob - the level change will be abruptly applied when you un-HOLD...I'd avoid HOLD altogether.

For the most part STEREO is fine - unless you are doing a 3 channel or other non-symmetrical setup - then MONO might make more sense.

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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #50 on: March 15, 2017, 06:31:53 AM »
I'd use LOW not MID for a rock show.
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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #51 on: March 15, 2017, 06:48:14 PM »
I'd use LOW not MID for a rock show.

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Re: Tascam DR-70D 4-channel audio recorder (Part 8)
« Reply #52 on: March 15, 2017, 09:05:18 PM »
I'd use LOW not MID for a rock show.

Agreed.  I don't go past MID for classical recording, and find myself using LOW for a lot of things with orchestra or loud percussion.
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