Yahoo Groups archive

Doepfer

Index last updated: 2026-04-29 00:15 UTC

Thread

Re: Is my A-118 malfunctioning?

Re: Is my A-118 malfunctioning?

2001-12-11 by studio1dk

This was the mail I recived from Dieter Doepfer on the subject:

That's normal as the random output is derived from the colored noise 
(factory setting). It is possible to derive the random output from 
the white noise so that the red and blue pots do not influence the 
random output.  For this the resistor R12 (100k) has to be removed 
and soldered to the position R12' (with apostrophe). The position of 
R12' is next to R12 and marked with a broken line (behind the random 
rate potentiometer).

Best regards
Dieter Doepfer
Doepfer Musikelektronik GmbH
http://www.doepfer.de
email: hardware@doepfer.de


--- In Doepfer_a100@y..., Richard Guido <rguido@t...> wrote:
> Ok, let's put this into perspective! Here's how the thing should 
work, if it
> doesn't work this way there's a design flaw or something. First, 
White noise
> out, no variation when any of the knobs are turned.  Second, 
colored noise
> out is controlled by the blue and red knobs - these should ONLY 
affect the
> output of the colored noise.  Third, random output is controlled by 
the rate
> and level knobs and ONLY those knobs!  So, is this what happens?  
If not,
> the damn thing wasn't designed right.  
> 
> RJG
> 
> -----Original Message-----
> From: studio1dk [mailto:keld.soerensen1@s...]
> Sent: Tuesday, December 11, 2001 7:20 AM
> To: Doepfer_a100@y...
> Subject: Re: [Doepfer_a100] Is my A-118 malfunctioning?
> 
> 
> Dieter just wrote to me that it is normal -it´s supposed to work 
that 
> way. You can disconnect the colored noise and connect the white 
noise 
> if you want to. Thereby eliminating the influence of the red and 
blue 
> pot.
> 
> Keld
> --- In Doepfer_a100@y..., "martin olson" <martin@t...> wrote:
> > 
> > I´ve also noticed this phenomena, i thought it was a malfunction 
> when i first tried it, but even stranger is that the rate pot. 
seems 
> to be working in the opposite direction...?..
> > 
> > ///dnfn\\\
> > 
> > 
> > > Doepfer_a100@y... davevosh@a...: Sat, 8 Dec 2001 18:23:51 EST
> > > Re: [Doepfer_a100] Is my A-118 malfunctioning?Reply-To: 
> Doepfer_a100@y...
> > >
> > >In a message dated 12/8/2001 5:17:56 PM Eastern Standard Time, 
> > >keld.soerensen1@s... writes:
> > >
> > >
> > >> I was looking at the output of the random output from the A-
118 
> noise 
> > >> module on an oscilloscope as I noticed that turningthe "red 
pot" 
> had 
> > >> an effect on the waveform. Is this supposed to happen? -I 
> thought 
> > >> that the random out was independent from the other two outs.
> > >> 
> > >
> > >
> > >
> > >keld,
> > >it points out somewhere in the "man pages" for the module that 
the 
> noise 
> > >level controls interact with the r.v. output.
> > >best,
> > >dave
> > >
> > > 
> > >
> > >
> > >[Non-text portions of this message have been removed]
> > >
> > >
> > >
> > >To unsubscribe from this group, send an email to:
> > >doepfer_a100-unsubscribe@y...
> > >
> > > 
> > >
> > >Your use of Yahoo! Groups is subject to 
> http://docs.yahoo.com/info/terms/ 
> > 
> > 
> > ------------------------------------------------------------
> > wood.  fire.  hand.  go.  http://www.bullseyeart.com
> 
> 
> 
> To unsubscribe from this group, send an email to:
> doepfer_a100-unsubscribe@y...
> 
>  
> 
> Your use of Yahoo! Groups is subject to 
http://docs.yahoo.com/info/terms/

RE: [Doepfer_a100] Is my A-118 malfunctioning?

2001-12-11 by Richard Guido

Ok, let's put this into perspective! Here's how the thing should work, if it
doesn't work this way there's a design flaw or something. First, White noise
out, no variation when any of the knobs are turned.  Second, colored noise
out is controlled by the blue and red knobs - these should ONLY affect the
output of the colored noise.  Third, random output is controlled by the rate
and level knobs and ONLY those knobs!  So, is this what happens?  If not,
the damn thing wasn't designed right.  

RJG
Show quoted textHide quoted text
-----Original Message-----
From: studio1dk [mailto:keld.soerensen1@skolekom.dk]
Sent: Tuesday, December 11, 2001 7:20 AM
To: Doepfer_a100@yahoogroups.com
Subject: Re: [Doepfer_a100] Is my A-118 malfunctioning?


Dieter just wrote to me that it is normal -it´s supposed to work that 
way. You can disconnect the colored noise and connect the white noise 
if you want to. Thereby eliminating the influence of the red and blue 
pot.

Keld
--- In Doepfer_a100@y..., "martin olson" <martin@t...> wrote:
> 
> I´ve also noticed this phenomena, i thought it was a malfunction 
when i first tried it, but even stranger is that the rate pot. seems 
to be working in the opposite direction...?..
> 
> ///dnfn\\\
> 
> 
> > Doepfer_a100@y... davevosh@a...: Sat, 8 Dec 2001 18:23:51 EST
> > Re: [Doepfer_a100] Is my A-118 malfunctioning?Reply-To: 
Doepfer_a100@y...
> >
> >In a message dated 12/8/2001 5:17:56 PM Eastern Standard Time, 
> >keld.soerensen1@s... writes:
> >
> >
> >> I was looking at the output of the random output from the A-118 
noise 
> >> module on an oscilloscope as I noticed that turningthe "red pot" 
had 
> >> an effect on the waveform. Is this supposed to happen? -I 
thought 
> >> that the random out was independent from the other two outs.
> >> 
> >
> >
> >
> >keld,
> >it points out somewhere in the "man pages" for the module that the 
noise 
> >level controls interact with the r.v. output.
> >best,
> >dave
> >
> > 
> >
> >
> >[Non-text portions of this message have been removed]
> >
> >
> >
> >To unsubscribe from this group, send an email to:
> >doepfer_a100-unsubscribe@y...
> >
> > 
> >
> >Your use of Yahoo! Groups is subject to 
http://docs.yahoo.com/info/terms/ 
> 
> 
> ------------------------------------------------------------
> wood.  fire.  hand.  go.  http://www.bullseyeart.com



To unsubscribe from this group, send an email to:
doepfer_a100-unsubscribe@yahoogroups.com

 

Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.