[HAM] AO-28 Sounds

[David Anderson]

I didn't say I was thinking about the direct signal path caps :)

C28 in the feedback loop of the percussion input is .047uF.

Capacitors in feedback loops are *every bit* as important as those  
directly in the signal path--sometimes more so. When I upgrade  
capacitors, I usually change those in the signal path and the  
associated feedback loop (if there is one) at the same time. For  
example, if I replaced C12, I'd do C11, too.

David

On Jan 19, 2008, at 9:58 PM, Scott Hawthorn wrote:

>>
>> For values like .047uF and .33uF, use polypropylene, either
>> metallized film or film & foil. Try to buy the grades of
>> polypropylene capacitors with copper leads rather than steel since
>> steel can pick up EMI from nearby transformers.
>>
>> David
>
> The coupling caps in the AO-28 are .02 or .03, depending on the  
> year made.