Elektor Formant Modular

ok this is hard to explain...
the formant 12db filter:
the res is turn all the way "up"
and when i turn the octave/freq pot, there are "bubbles" in the sound...like 
different volume levels for different frequnencies..i dont know if this 
makes any sense! its like the linaerity of the filter (not the oct/volts) is 
messed up...

anybody who can help?!
troels.

_________________________________________________________________
F\ufffd gode tilbud direkte i din mailbox http://jatak.msn.dk

May be you need to clean the pot,
May be your PSU is a cheap linear and introduces that deviation (have you
checked if the bubble follow any of the led`s rate??)
May be there are voltage coming from the KBD...
May be a bad conection to Ground
May be...
Best regards,

Josue Arias.

----- Original Message ----- 
From: "troels jrgensen" <the19thbear@...>
To: <ElektorFormant@yahoogroups.com>
Sent: Tuesday, August 26, 2003 5:50 PM
Subject: [ElektorFormant] 12db


> ok this is hard to explain...
> the formant 12db filter:
> the res is turn all the way "up"
> and when i turn the octave/freq pot, there are "bubbles" in the
sound...like
> different volume levels for different frequnencies..i dont know if this
> makes any sense! its like the linaerity of the filter (not the oct/volts)
is

> messed up...
>
> anybody who can help?!
> troels.
>
> _________________________________________________________________
> F\ufffd gode tilbud direkte i din mailbox http://jatak.msn.dk
>
>
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>

>>May be you need to clean the pot,
>May be your PSU is a cheap linear and introduces that deviation (have you
>checked if the bubble follow any of the led`s rate??)
>May be there are voltage coming from the KBD...
>May be a bad conection to Ground
>May be...
>Best regards,
>
>Josue Arias.
>thank you.... i gues.:)
the psu is ok. the pot is ok, the keyboard isnt plugged in.... may be.

_________________________________________________________________
F\ufffd gode tilbud direkte i din mailbox http://jatak.msn.dk

--- In ElektorFormant@yahoogroups.com, "troels jrgensen" 
<the19thbear@h...> wrote:
> 
> 
> 
> >>May be you need to clean the pot,
> >May be your PSU is a cheap linear and introduces that deviation 
(have you
> >checked if the bubble follow any of the led`s rate??)
> >May be there are voltage coming from the KBD...
> >May be a bad conection to Ground
> >May be...
> >Best regards,
> >
> >Josue Arias.
> >thank you.... i gues.:)
> the psu is ok. the pot is ok, the keyboard isnt plugged in.... may 
be.
> 
> 
definately sounds like a bad connection/pot. Hard to say without 
being there!