Replace for 303's VCA ?!?

[J.D. McEachin]

On Thu, 13 Mar 1997, Vlado Banda wrote:

> Hi folks,
> * PRELUDE:
> I'm deeply into building clone 303, but I'am stick to original schematics
> as fly to a windshield (nice one, ha?). I'm reconstruct PCB to fulfill my
> needs, 'coz I'am doing it with replacement parts (or even better?).
> * PROBLEM:
> I cannot find BA 662(a) or his replacement (it's for 303's VCA). 

You mean Roland no longer has BA662's?  If so, this means big trouble for 
almost all Roland analogues - that was their main OTA chip for a long time.

Your 303 clone won't sound very authentic without it - the distortion 
products are an integral part of the 303 sound.  I have a friend who did 
the same thing you're doing - he tried using a 3080-based VCA, and never 
could get the distortion right.

Call Roland.

JDM