Doepfer

I've found my A-121 to be by far the least audiophile-quiet of all my 65
modules.  Often some hiss, though never with resonance cranked.

I'm interested that you report this issue only with your a-121.

(My Analogue Solutions drum modules tend to hiss a bit as well.)


> -----Original Message-----
> From: Stinchcombe Timothy [mailto:tstinchcombe@qinetiq.com] 
> Sent: Wednesday, July 17, 2002 9:28 AM
> To: 'Doepfer_a100@yahoogroups.com'
> Subject: RE: [Doepfer_a100] My A-121 has turned into a radio 
> receiver.....
> 
> 
> Hi Ethan,
> 
> > I recently moved my A-100 system farther
> > from my mixer and connected it via a longer
> > unshielded cable - mini to phone.  Now, when
> 
> This would probably be the easiest and most obvious place to 
> start - replace that unshielded cable with some shielded or 
> screened cable, and see how it is then.
> 
> > I use the A-121 in a patch, I am getting
> > considerable noise and in HP mode it has 
> > received FM (or possibly AM, I didn't investigate 
> > enough) Mind you, I am a big fan of the A-121 and
> > the 12db HP sound.  What can I do to mitigate
> > the noise present in my system now?  Am I 
> > even considering the component responsible for
> > the noise?
> 
> Using good quality screened cables is a step in the right 
> direction for the first question, for the second 
> unfortunately I have little idea, but I'll skim the analogue 
> troubleshooting books I have to see if they contain any ideas 
> on such problems. I'm guessing that you're noticing it 
> through the HP output because it's getting filtered out from 
> the others (LP etc.)? If you can use a radio to identify the 
> offending frequency, that information might be useful.
> 
> Tim
> 
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