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Author Topic: EAA PSP-2 Running at 5Volts  (Read 4541 times)

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Online H₂O

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EAA PSP-2 Running at 5Volts
« on: July 07, 2007, 10:05:37 PM »
Anybody ever run the PSP-2 at 5Volts?  Any issues?

According to the manual the supported volatges are 5 - 9 Volts.
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Offline tedyun

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Re: EAA PSP-2 Running at 5Volts
« Reply #1 on: July 23, 2011, 12:17:16 PM »
I was surprised to see that the PSP-2 can be powered by 5V, 500 mA which conforms to USB standard powering. I can't think of any other preamp in this size/performance category that has such minimal power requirements (Aerco, Sonosax, PSP-3, any others...?).

A while ago, I bought a slim USB battery pack for use with my iPod (APC UPB10). I hacked together a USB to DC jack (from an old AC adapter that I found to fit). Surprisingly, it powers the PSP-2 for quite a while, with Phantom 48V on. I recorded for 8 h, and the battery was only half drained. I'm sure there are smaller USB battery packs with more capacity nowadays since this is a pretty old battery.

Any other experiences out there with powering a PSP-2 with 5V? Any effect on sound quality or SPL handling?
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Offline ashevillain

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Re: EAA PSP-2 Running at 5Volts
« Reply #2 on: July 23, 2011, 03:13:15 PM »
I can't think of any other preamp in this size/performance category that has such minimal power requirements (Aerco, Sonosax, PSP-3, any others...?).

The Sound Devices MixPre, MP-2 and Shure FP-24 are all spec'd to run at 5V.

I'd guess the USBPre 2 does as well since it is powered via a USB connector (but I wouldn't put it in the same category as the rest).
« Last Edit: July 23, 2011, 03:15:23 PM by ashevillain »

Offline hi and lo

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Re: EAA PSP-2 Running at 5Volts
« Reply #3 on: July 23, 2011, 05:52:41 PM »
Mine lasts a ridiculously long time on 6 AAs, I'm not sure I'd ever use an external power source unless absolutely necessary. I am using it at 12v (w/ cmr's and a pfa) instead of 48v, but I think I could probably get 14-20 hours from 6 AAs easy.

Aside from the standard battery sled issues (i.e. not forgetting to flip it backwards when not in use), I think it's more reliable powering source than an external battery with a cable that could wiggle or come unplugged. If you flip the sled backwards, I recommend putting some electrical tape on the back side of the sled just to be certain.

That said... damn those pictures are sexy. :)
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Mics: Schoeps MK21 / MK22 / MK4 / MK4V / MK41V / MK41 / MK5; Neumann SKM140; AKG 480/CK61; MBHO 603/KA200N / DPA 4061 / Dynamic Audio Binaurals
Pres & A/Ds: E.A.A. PSP-2 (2x) / Aeta PSP-3 / Sonosax SX-M2 (2x) / Grace V3 / Naiant Tinybox v2.x (Reutelhuber) / Nbox+ / AD2k+ / SBM-1 (2x)
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Offline tedyun

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Re: EAA PSP-2 Running at 5Volts
« Reply #4 on: July 23, 2011, 11:13:26 PM »
I think the tree-hugger in me tries to find a rechargeable solution whenever possible. I like devices that I can power with both internal and external options. I usually hook up an external supply, and rely on the internal batteries to act as a safety net in case something happens to the external.

I'll probably run the PSP-2 with the external and internals -- I just gotta remember to remove that sled when not in use!!!

Mine lasts a ridiculously long time on 6 AAs, I'm not sure I'd ever use an external power source unless absolutely necessary. I am using it at 12v (w/ cmr's and a pfa) instead of 48v, but I think I could probably get 14-20 hours from 6 AAs easy.

Aside from the standard battery sled issues (i.e. not forgetting to flip it backwards when not in use), I think it's more reliable powering source than an external battery with a cable that could wiggle or come unplugged. If you flip the sled backwards, I recommend putting some electrical tape on the back side of the sled just to be certain.

That said... damn those pictures are sexy. :)
Mics: B&K 4011, Schoeps MK5 (Nbobs, Naiant PFA), Busman BSC-1 (K11/K21/K31/K41 caps), Church CA-14 (o, c), Church CAFS, Core Sound Binaurals
Pre: EAA PSP-2,  Lunatec V3, Nbox-Platinum, Church CA-9200
ADC: Mytek 192 ADC, Oade Mod SBM-1
Rec: Oade Supermod PMD-661, Tascam DR60D, M-Audio MicroTrack II, Korg MR-1 (32GB SSD mod); Sony PCM-M10, Edirol R09HR; iRiver HP-120
Photo: Canon 5D3, Canon EF-S 17-55mm f2.8, Canon EF 35mm f1.4L Canon EF 24-70 f2.8L MkI, Canon EF 70-200mm f2.8L IS MkI, Canon EF 50 mm f1.4, Canon EF 50 f1.2L, Canon EF 300 f/4L IS, Canon EF 100-400 f4-5.6L IS MkI
Video: Canon HF100

stevetoney

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Re: EAA PSP-2 Running at 5Volts
« Reply #5 on: July 25, 2011, 08:44:02 AM »
Nothing really to add to this except that I just ran the PSP-3 at 6V using a 10Ah 6V SLA for the entire weekend at All Good.  That was something like 44 hours of music spread over 4 days.  Couldn't have been a better experience and the battery only cost me $30 at BatteriesPlus. 


Offline F.O.Bean

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Re: EAA PSP-2 Running at 5Volts
« Reply #6 on: July 25, 2011, 07:33:30 PM »
Nothing really to add to this except that I just ran the PSP-3 at 6V using a 10Ah 6V SLA for the entire weekend at All Good.  That was something like 44 hours of music spread over 4 days.  Couldn't have been a better experience and the battery only cost me $30 at BatteriesPlus. 



Thats awesome, I wish my new Lemosax ran on 5-6v :P I just got my Lemosax and mk41's and dvd battery today! ;D I was wondering tho, is the ring positive or negative on the sax ???

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Offline hi and lo

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Re: EAA PSP-2 Running at 5Volts
« Reply #7 on: July 26, 2011, 11:53:22 AM »
When not in use, I simply flip the battery sled backwards. I've put some duct tape on the back end of the sled because there are some metal contacts. Electrical tape might be a wiser decision, but this has worked well nonetheless. I've left the sled in the unit backwards for a few weeks and there is zero drain.

My poor sled is really busted.. I definitely need to order a new one soon!



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Mics: Schoeps MK21 / MK22 / MK4 / MK4V / MK41V / MK41 / MK5; Neumann SKM140; AKG 480/CK61; MBHO 603/KA200N / DPA 4061 / Dynamic Audio Binaurals
Pres & A/Ds: E.A.A. PSP-2 (2x) / Aeta PSP-3 / Sonosax SX-M2 (2x) / Grace V3 / Naiant Tinybox v2.x (Reutelhuber) / Nbox+ / AD2k+ / SBM-1 (2x)
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Offline tedyun

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Re: EAA PSP-2 Running at 5Volts
« Reply #8 on: July 26, 2011, 01:59:50 PM »
Thanks for the tip! I'll just have to remember to flip it every time. Is there a secret to pulling out the tray? I'm using a screwdriver to pry it out. I was thinking of putting a string or thread around one of the holes so that I can just yank it out.

My offer still stands to run to my Fry's and pick up a generic sled for ya!


When not in use, I simply flip the battery sled backwards. I've put some duct tape on the back end of the sled because there are some metal contacts. Electrical tape might be a wiser decision, but this has worked well nonetheless. I've left the sled in the unit backwards for a few weeks and there is zero drain.

My poor sled is really busted.. I definitely need to order a new one soon!




Mics: B&K 4011, Schoeps MK5 (Nbobs, Naiant PFA), Busman BSC-1 (K11/K21/K31/K41 caps), Church CA-14 (o, c), Church CAFS, Core Sound Binaurals
Pre: EAA PSP-2,  Lunatec V3, Nbox-Platinum, Church CA-9200
ADC: Mytek 192 ADC, Oade Mod SBM-1
Rec: Oade Supermod PMD-661, Tascam DR60D, M-Audio MicroTrack II, Korg MR-1 (32GB SSD mod); Sony PCM-M10, Edirol R09HR; iRiver HP-120
Photo: Canon 5D3, Canon EF-S 17-55mm f2.8, Canon EF 35mm f1.4L Canon EF 24-70 f2.8L MkI, Canon EF 70-200mm f2.8L IS MkI, Canon EF 50 mm f1.4, Canon EF 50 f1.2L, Canon EF 300 f/4L IS, Canon EF 100-400 f4-5.6L IS MkI
Video: Canon HF100

Offline hi and lo

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Re: EAA PSP-2 Running at 5Volts
« Reply #9 on: July 26, 2011, 06:00:40 PM »
Is there a secret to pulling out the tray? I'm using a screwdriver to pry it out. I was thinking of putting a string or thread around one of the holes so that I can just yank it out.

It might be that my sled is so badly damaged, but I've never had any trouble removing it from the unit.

A string sounds like a decent enough idea; just make sure there's no way to accidentally damage the sled while setting up for a recording!
Friends don't let friends buy tube mics...

Mics: Schoeps MK21 / MK22 / MK4 / MK4V / MK41V / MK41 / MK5; Neumann SKM140; AKG 480/CK61; MBHO 603/KA200N / DPA 4061 / Dynamic Audio Binaurals
Pres & A/Ds: E.A.A. PSP-2 (2x) / Aeta PSP-3 / Sonosax SX-M2 (2x) / Grace V3 / Naiant Tinybox v2.x (Reutelhuber) / Nbox+ / AD2k+ / SBM-1 (2x)
Recorders: 744T / R-44 / PCM-M10 (2x)

Quote from: it-goes-to-eleven

It isn't fear. It isn't subjective. You can measure it on a scope.

Offline F.O.Bean

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Re: EAA PSP-2 Running at 5Volts
« Reply #10 on: July 26, 2011, 06:07:30 PM »
string sounds like a good idea :)
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Schoeps | NBob 250/05 KCY's ->
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Offline raoulduke

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Re: EAA PSP-2 Running at 5Volts
« Reply #11 on: September 13, 2015, 09:53:01 PM »
Has anyone powered a PSP-2 with the Tekkeon mp3300 via its supported voltage ranges of 5, 6, 7.5 or 9?

Offline tedyun

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Re: EAA PSP-2 Running at 5Volts
« Reply #12 on: September 14, 2015, 02:44:34 PM »
I've run the PSP-2 using the related MP3450 at 5 V. On the MP3450, there is a USB port so I usually used this to the PSP, then used the custom DC out to power something else. But it definitely should work with the MP3300 at 5 V.

Has anyone powered a PSP-2 with the Tekkeon mp3300 via its supported voltage ranges of 5, 6, 7.5 or 9?
Mics: B&K 4011, Schoeps MK5 (Nbobs, Naiant PFA), Busman BSC-1 (K11/K21/K31/K41 caps), Church CA-14 (o, c), Church CAFS, Core Sound Binaurals
Pre: EAA PSP-2,  Lunatec V3, Nbox-Platinum, Church CA-9200
ADC: Mytek 192 ADC, Oade Mod SBM-1
Rec: Oade Supermod PMD-661, Tascam DR60D, M-Audio MicroTrack II, Korg MR-1 (32GB SSD mod); Sony PCM-M10, Edirol R09HR; iRiver HP-120
Photo: Canon 5D3, Canon EF-S 17-55mm f2.8, Canon EF 35mm f1.4L Canon EF 24-70 f2.8L MkI, Canon EF 70-200mm f2.8L IS MkI, Canon EF 50 mm f1.4, Canon EF 50 f1.2L, Canon EF 300 f/4L IS, Canon EF 100-400 f4-5.6L IS MkI
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Offline jbell

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Re: EAA PSP-2 Running at 5Volts
« Reply #13 on: September 14, 2015, 04:39:20 PM »
Yes, will power it for a long time.  I have only run mine at 9v

Has anyone powered a PSP-2 with the Tekkeon mp3300 via its supported voltage ranges of 5, 6, 7.5 or 9?
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Offline raoulduke

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Re: EAA PSP-2 Running at 5Volts
« Reply #14 on: September 14, 2015, 07:44:35 PM »
Thanks, fellas.   :cheers:

 

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