marvellous. thanks for the links silas (that site is so funny), and
thanks for a good suggestion patate.

stu



--- In Doepfer_a100@yahoogroups.com , "patate_le_mage" <patate.pat@...>
wrote:

>
> --- In Doepfer_a100@yahoogroups.com , "Silas Johansen" <sijodk@> wrote:
> >
> > Have a look at the circuit layout on
> >
>

http://www.musicfromouterspace.com/analogsynth/YOUR_FIRST_SYNTH/YOUR_FIRST_SYNTH.html-

> > the project in itself is a nice exercise in building synth circuitry,
> > although the end product is of limited use musically (unless you
> need bleeps
> > and bloops that doesn't sync to anything other than the circuits lfo).
> >
> > Or for a direct link to the image in case you're unsure of which

one I'm

> > talking about:
> >
>

http://www.musicfromouterspace.com/analogsynth/YOUR_FIRST_SYNTH/your_first_synth.gif

> >
> > Everything to the right of the dotted line is the filter section -
> pretty
> > simple with no CV control but fairly easy to build. I'm not sure how
> this
> > filter would respond to modular level signals, though, as I built
> the entire
> > circuit. Maybe somebody with more DIY experience might be able to
> tell you
> > based on the parts values and design.
> >
> > On 9/18/07, Stu Grimshaw <grimshaw@> wrote:
> > >
> > > Hi group,
> > >
> > > working with the a188 bbd, i'm kind of hand-tied by the fact that i
> > > need a filter (of which i only have two) to remove the clock signal
> > > from the echoes produced.
> > >
> > > so i need to buy another one, or do i is there an easy way to

build

> > > a fixed freq lpf it's easy enough on the guitar, i.e. a passive
> > > circuit, but what's the score with all this active circuitry
> > >
> > > any help or advice greatly appreciated.
> > >
> > > stu
> > >
> > >
> > >
> >
> >
> > [Non-text portions of this message have been removed]
> >
> HI,
> My answer is not the one you expect, i'm not an electronician, but I
> don't use a LPF to avoid the clock noise because it's also suppress a
> lot of frequencies i want to keep in.
> In fact i use a notch filter ( the A121 one ) and here, all is ok, the
> clock noise disapears and the high frequency are still there. Perhaps
> you can try that and choose to DIY a notch filter.
> My one per cent.
> Patate le mage
>