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[Emmanuel AMADIO]

Thanks for the info but the thing which is still blured in my mind is why the JX8P and the JX10 have capacitors of
different values when they have the same circuitry and exactly the same chips (the sound module boards are the same).

Grant Richter wrote:
> 
> You will see this in unbuffered filter designs.
> A good example is the lowpass filter from the
> ARP 2600 envelope follower. I modeled it in SPICE
> and it gives a nice sharp 24 Db/Oct rolloff with no
> buffering between stages.
> 
> Further stages load the previous stage and reduce Q
> so the impedance of the stages is modified to end
> up with a nice sharp corner at the end. You typically
> see the resistor values go up and the cap values
> go down for stages later in the chain.
> 
> >> C1=C2=10 nF
> >> C3=C4=220 pF
> >
> > The other strange thing is that for the JX8P  C1=C2=C3=10 nF and C4=220pF
> >
> > Regards Emmanuel
> >