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Re: My Audio Buddy problem.

Subject: Re: My Audio Buddy problem.
From: Rob Danielson <>
Date: Wed, 25 Aug 2004 22:59:34 -0500
Hi Dave--
No transformer I can see.
Hope you see something interesting, Best, Rob D.

    =3D =3D =3D

At 2:56 AM +0000 8/26/04, Dave J wrote:
>If the input measures as a low resistance then
>there is probably an internal 50/60 Hz transformer
>which would imply DC should not be applied. If you
>know for a fact that there is no internal transformer
>then it should be possible to run the unit on 12VDC
>unless something really tricky is being done.
>Before applying voltage try e-mailing M-Audio;
>"support at m-audio dot de"
>I would be willing to look at a unit but a few decent
>photos of the insides of one would probably give us
>the answer.
>--- Rob Danielson <> wrote:
>>  Something ingeniously simple like this is what we
>>  need. I just tried 10 volts into my Audio Buddy
>>  and the main power LED doesn't light.  I recall
>>  discussion about Len Moskowitz's involved M-Audio
>>  Duo modification for portable DC which also has
>>  the 10 VAC input.  The phantom power LED will
>>  light with a 10 VDC input; this might be a clue
>>  as to getting more power to this part of the
>>  circuit. We were attaching the 4- 9volt batteries
>>  for +18 and -18 before the regulators. The
>>  phantom voltage provided was low, ~40 volts. The
>>  A-B spec sheets shows the 10VAC at 300ma; the 9
>>  volt batteries don't seem seem have have enough
>>  current. If someone on this list familiar with
>>  this kind of circuitry  has the interest and time
>>  to work out a portable power solution, I'll send
>>  them my Audio Buddy to study and modify.  Best,
>>  Rob D.
>"Microphones are not ears,
>Loudspeakers are not birds,
>A listening room is not nature."
>Klas Strandberg
>Yahoo! Groups Links

Rob Danielson
Film Department
University of Wisconsin-Milwaukee


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