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.=A0 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.
=3D =3D =3D
At 7:31 AM -0700 8/25/04, umashankar wrote:
>first off, you can connect a 9 v dc supply where 9 v
>ac is required. you may in fact need more than 9 volts
>- approximately 9 x 1.4 volts (which is what would be
>happening if the 9 volt ac was rectified and smoothed
>inside the audio buddy.
>
>9 volt dc should cause absolutely no harm.
>
>umashankar
>--- Bill Rankin <> wrote:
>
>> Hi All
>>
>> Way back in February this year there was a
>> discussion on the CAD M179 microphone which
>> Walter,Klas and others reckoned was a pretty good
>> low noise mic for the price. So recently, when my
>> wife had to go on a business trip to the States I
>> took the opportunity to suggest that she by me a
>> present while she was there ;-)
>>
>> Now, realising I also needed phantom power for the
>> mic I thought I would also get the small "Audio
>> Buddy" a dual preamp and phantom power supply unit
>> which had also has been previously mentioned by
>> members of this group as a good unit.
>>
>> However I think I outsmarted myself. I thought the
>> Audio Buddy would be able to be powered in the field
>> using a gel cell battery by dropping a 12v down to
>> the required 9 volts but on unpacking the unit back
>> here in Australia I find that the 9 volt power
>> required is 9 volts AC not DC as I originally
>> thought. I guess I didn't read the specs properly.
>>
>> Do any of you electronic experts know how I can
>> power the Audio Buddy in the field? I am only a
>> novice in the soldering iron department but can
>> follow a basic diagram.
>>
>> I intended to use this setup in the field with an
>> additional CAD M179 mic (if the first one turned out
>> to be satisfactory) for stereo atmospheres and so
>> weight was not going to be a problem once I had
>> carted the stuff to the right spot of course.
>>
>>
>>
>> Bill Rankin
>> Australian Wildlife Sound Recording Group
> >
> >
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