MOTM

It's not the 800 envelope generator, it's the VCA.  We've been through this
many times.  (now *I* am gritting my teeth)

 

I have a ton of other vca's that do not exhibit the same behaviour (Doepfer,
moog, etc).  of course they will 'click' at superfast attacks & low freq
waveforms, but nothing like the MOTM vca.   

 

If you remember Paul, the problem was never solved.  $10,000 scope or not.  

"The *same file* makes *no clicks* on my Event 20/20s."   buloney. Play the
file I sent you a year ago.

 

paul

 

 

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From: Paul Schreiber [mailto:synth1@...] 
Sent: Thursday, April 07, 2005 5:19 PM
To: motm@yahoogroups.com; Jim Carlile
Subject: Re: [motm] Re: Clicking VCA

 

(grits teeth):

a) there is NOTHING WRONG with the '190 VCA.

b) I've sold over 180 '190s, perhaps 4 people have said something.

c) I've looked at the outputs with my $10,000 digital scope looking for
obvious 
'spikes' or DC shifts. Nope. I've run FFTs. I've duplicated "clicking" by 
hand-editing waveforms in SoundForge and playing them back on crappy PC 
speakers. The *same file* makes *no clicks* on my Event 20/20s.

d) What you may want to try is increasing C9 on the '800 to like 10uf
non-polar. 
This will increase the overall ADR times, and you may find that on the lower
end 
of the scale (from 0 to 2) it's easier to find an Attack time that is more 
'forgiving'.

e) you may find that Sines and Triangle will 'click less' than pulses or
saws.

Paul S.




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