[sdiy] Death of DIY?

[harrybissell]

It might use more discrete parts, but usually it just means that you have
a bipolar 4.5V supply that sucks your  battery down, and a lot more
interstage coupling capacitors.  You can re-do almost all the circuits with
bipolar supplies a lot easier, and with more headroom.

I've done the BigMuff II (pi) in bipolar and it works better imho.  So do most
phaser circuits etc.

Signal processing wise... stompbox and synthmodules are interchangable...
signal levels are higher in the synth modules..

Personally I'd rather have a 'real' ground and not have to use as many
coupling caps (decoupling caps I like :^).   This can be a bigger issue in a
bigger
system. Most stompboxes run on their OWN 9V battery, so a large unit might
end up costing more to run than a synth.

H^) harry


"Roy J. Tellason" wrote:

> On Monday 18 July 2005 10:54 pm, harrybissell wrote:
> > I see no difference between guitar modules and synth modules other
> > than packaging, and usually a unipolar 9V power supply. Bring it on.
> > Could it be 'less' on topic than the rants lately ???
> >
> > H^) harry
>
> Though I have no special interest in 9v supplies,  I think unipolar is of some
> interest -- would that tend to use fewer op amps?  More discrete transistor
> circuits?  I sure have a whole mess of that sort of thing to use up...
>
> I like simpler power supply design and distribution,  too.  When you're a
> DIYer and not a mfr, the idea of making boards is more of a hassle for one
> unit rather than lots of them (though stuffing perfboard does have its tedium
> as well),  and all those mult-pin connectors add up quick.
>
> Sure seems like a bunch of the folks in here have lots more to spend on this
> hobby than I do!
>
> > Barry Klein wrote:
> > > One area that remains of great interest, especially to beginners, is
> > > guitar effects.  Is there an equivelant GuitarEffects-DIY list by chance?
> > >  Or are they stuck debating the eccentricities of germanium diode vs LED
> > > vs tube distortion etc.?
> > >
> > > I suppose the majority of people here want to keep the topics limited to
> > > synthesizer design, but... well....  we haven't had much of that.
> > >
> > > Barry