[sdiy] x0xb0x background noise problem

[Louis van Dompselaar]

> I've had two x0xboxes here and they both were a bit noisy. Both VCA's 
> were built around BA6110's.
> 
> Which VCA IC's are you using, BA6110's, BA610A's or a combination perhaps?

Both are BA662A.  I managed to get the noise down a bit by swapping Q31, 
Q32 and enveloppe transistors for others, as someone off-list
suggested.  Still not dead quiet as my own #082, but then again, my
Polysix procudes more noise...