PLAN B analog blog

Hello,

I have a problem with my model 13 now in fact.

Since few days ago, when offset is completely turned off (zero), with no CV in, I still get 
sound coming through (whatever source is, vco, noise...) and quite loud.

Its happening with both of the gates, but its more serious with the upper one?


Any idea that could help...


Best,


Alexandre




--- In PLAN_B_analog_blog@yahoogroups.com, "(i think you can figure that out)" 
<peter@...> wrote:
>
> What is with me and typing?
> 
> Have you ever noticed I usually screwup the money words?  All the
> and's, but's, if you's are OK, then I come to the part of the exact
> location of the problem and it's at the sispo sjsiu wwiwoim, and I
> send that without proofing.  It's uncanny.
> 
> Anyway, I meant the LOWER gate, not the POWER gate (below):
> 
> 
> 
> 
> --- In PLAN_B_analog_blog@yahoogroups.com, "(i think you can figure
> that out)" <peter@> wrote:
> >
> > You will notice two trim pots on the M13 PCB. To make the inputs less
> > sensitive, just back those down.  The upper trimmer is for the upper
> > gate, the lower trimmer is for the power gate.
> >
> > As far the amp mode - this is a function of the beast.  Some of what
> > you're hearing is no filtering, as that amplifies certain frequencies,
> > and the other is the energy drop through the circuit by bypassing the
> > FET tha drives the sallen-key filter inside.
> >
> > - P
> >
> >
> >
> >  --- In PLAN_B_analog_blog@yahoogroups.com, "jalmari3"
> > <jari.jokinen@> wrote:
> > >
> > > I like M13 too.
> > >
> > > Although I wonder, why the VC inputs are so sensitive. I just tested
> > > Gate 1 of my unit: It tops at 4.3V. This often necessitates
> attenuation
> > > of the CV signal. (I would gladly change the offset controls to VC
> > > input attenuators.)
> > >
> > > Also, the amp only mode is much quieter, than other modes.
> > >
> > > Best regards
> > > Jari Jokinen
> > >
> >
>