[sdiy] ALFA clone chips?

cheater cheater cheater00social at gmail.com
Sat Mar 27 19:19:44 CET 2021

Thanks. was the original CEM3320 equally easy to damage? Did the other
chips have similar problems in their original versions?

On Sat, Mar 27, 2021 at 4:46 PM Benjamin Tremblay <btremblay at me.com> wrote:
> I have not tried the VCO, but have had great results with the 3320 VCF and the 3360 VCA. It’s pretty much Pro One for the masses.
> The 3320 is easy to damage if you over-power the resonance control.
> The 3360 can be tamed once you work within the correct control voltage range.
> I’m an idiot. I don’t have a scope. But they sound great and I was able to get them stood up and move on to the rest of my project.
> I’m also using a number of AS2164 chips. I have never used other brands, but these work great for computer-controlled mixers of analog signals.
> I made no effort to squeeze any gain out of them using negative voltage bias on the control pins. They work fine for my application.
> I still have some 3330 VCA chips. They were very frustrating to use.  They seem to require a low-impedance voltage divider that gets very noisy without careful placement of capacitors.
> Maybe if I go back and try to breadboard them after having learned the 3360 I could be more successful.
> On Mar 27, 2021, at 11:19 AM, cheater cheater <cheater00social at gmail.com> wrote:
> I was wondering if anyone had any experiences with ALFA clones of
> classic chips. Are they good? Is anything missing? Are they very crap?
> No difference at all? Any specific ones to watch out for?
> Thanks
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