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Author Topic: Sound Devices MixPre-3 and 6, Part 6  (Read 1304 times)

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Offline noahbickart

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Re: Sound Devices MixPre-3 and 6, Part 6
« Reply #15 on: February 26, 2019, 08:28:03 PM »
Im going to see if I can get my buddy to use his 744t this weekend and Ill run the mp6 with the same mics. See what we can come up with. Im curious too. Probably wont be from very “far away” but I think It’ll be fun to check out.

Perfect. Try to get both pairs into the identical configuration and as close to one another as possible. Ideally, use the same brand and length of cable, same shockmounts and windscreens as well.
Recording:
Capsules: Schoeps mk41v (x2), mk4v (x2), mk22 (x2), mk3 (x2), mk21 & mk8
Cables: 2x nbob KCY, 1 pair nbob actives, Darktrain 2 and 4 channel KCY extensions:
Preamps:    Schoeps VMS 02iub, Naiant Littlebox, Naiant IPA, Sound Devices Mixpre6
Recorders: Sound Devices Mixpre6, Sony PCM m10

Home Playback: Mytek DSD 192> McIntosh MC162> Eminent Tech LFT-16; Musical Fidelity xCan v2> Hifiman HE-4XX / Beyerdynamic DT880

Office Playback: Grace m903> AKG k701 / Hifiman HE-400

Offline beenjammin

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Re: Sound Devices MixPre-3 and 6, Part 6
« Reply #16 on: February 27, 2019, 08:33:35 PM »
Apologies if this has been mentioned. I did the relevant searches, which turned up nothing.

Does anyone know if the MP series puts out 5mA at P48? I have a mike that requires 5mA and is exhibiting odd behavior with a recorder that puts out 4mA.


Offline Ronmac

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Re: Sound Devices MixPre-3 and 6, Part 6
« Reply #17 on: February 28, 2019, 10:27:48 AM »
An easy search on SD website:

Quote
The MixPre Kashmir preamps provide full-specification phantom power (up to 10 mA at 48 V) for true condenser microphones. The combination of their high gain, low noise, low distortion Kashmir circuitry plus full specification phantom power means that the MixPre recorders require more power than recorders with lower gain, lower performance preamp topologies.

Offline fozzy

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Re: Sound Devices MixPre-3 and 6, Part 6
« Reply #18 on: March 01, 2019, 11:14:34 PM »
This got lost in the last thread but I am still looking for someone to measure the output voltage from the MX-L battery sled when one and two batteries are attached.  I would like to see if this is native 8.0-6.8v from the L series packs, 16-14v in a series or if it is knocked down to ~5v usb voltage with some sort of built in regulator. 
MK 4V > KCY 250/5 Ig (KS 10I)  > VST62IUg > 722

Offline LiveOnTape

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Re: Sound Devices MixPre-3 and 6, Part 6
« Reply #19 on: March 07, 2019, 02:36:14 PM »
This got lost in the last thread but I am still looking for someone to measure the output voltage from the MX-L battery sled when one and two batteries are attached.  I would like to see if this is native 8.0-6.8v from the L series packs, 16-14v in a series or if it is knocked down to ~5v usb voltage with some sort of built in regulator.

I measured mine last night.  The batteries are wired in parallel, allowing for hot-swaps if you're running really long takes. 

There looks to be a little compartment door held on by a screw that could feasibly house a regulator, but I didn't want to dig in too deep and potentially mess the sled up. 

The output (not under load) measured at 8.1vDC, which is the exact voltage of the higher of the two batteries.  With that battery removed, the output measures 7.9vDC, the same as that battery that's inserted.  Seams to me that it's just a parallel hardwired pass through. 

When changing sleds between the 4xAA and the Sony batts, the MX6 pops up with a message saying something along the lines of "battery voltage mismatch. Switch to Alkaline/Lithium?"  Same thing happens if you load a preset that was saved with a different battery than what's in there now.  So the device is measuring/regulating the voltages inside. 
Recs: Sony PCM-M10 | Tascam DR-70D | A&H Qu-24 Qu-Drive
Pre-Amp/Mic Mixers/PS: SD USBPre 1.5 | Naiant IPA | Stewart P48
Mics: AKGs w CK91,92,94,97,98  | Oktava MK-012 mod | AT935 C/H/O/ML | Countryman B3s

 

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