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RE: [Doepfer_a100] Re: A-101-2 Low Pass Gate and self oscilation

RE: [Doepfer_a100] Re: A-101-2 Low Pass Gate and self oscilation

2007-09-09 by Anthony Rolando

Can anybody with the PRODUCTION version, or Dieter confirm if the LM324 is 
used for the Audio signal in this module. The LM324 is typically reserved 
for CV summing and etc...  I would be surprised if it were being used for 
audio.

TR

> > BTW usually, even though not always, a TL074 is prefered over an
> > LM324, do you see any reason why the LM324 has been choosen for the
>LPG?
>
>I cannot see any glaringly obvious circuit reason for using a higher-
>spec op amp, and I guess Doepfer themselves are aware that A-100
>stuff probably doesn't appeal to those people who absolutely insist
>on low-noise *everything*, so my best guess would be that it simply
>comes down to economics - I suspect the LM324 is just cheaper than a
>TL074. I might be wrong though, and so I am willing to be corrected
>by Dieter!

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Re: [Doepfer_a100] Re: A-101-2 Low Pass Gate and self oscilation

2007-09-10 by p. hendricks

On 9/9/07 2:52 PM, "Anthony Rolando" <goldenechos@hotmail.com> wrote:

> Can anybody with the PRODUCTION version, or Dieter confirm if the LM324 is
> used for the Audio signal in this module. The LM324 is typically reserved
> for CV summing and etc...  I would be surprised if it were being used for
> audio.

my production unit has a 14 pin LM342N in it.
BTW: the res kicks in very similar to that of the Wiard Borg.... They are
similar, the doepfer is a bit grittier...er...less refined, love them both.
But find the doepfer more usable/restrained. The 101-2 is great but what are
the unmarked vactrols in it comparable to?

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