[sdiy] newbie wiring question

[harrybissell]

For all you folks who are using multiconductor or bundled cables

1) DON'T put low level audio signals in a bundle with fast moving
signals like square waves, etc. They WILL bleed in.

A Sine wave with even a TINY (yes, thats a capital 'tiny' :^) amount
of pulse or saw will have really obvious distortion !!!

2) For the ribbon cable recycler... running a ground trace inbetween
each signal run can help reduce this a lot. The grounds need only be
tied at one end to be effective.

signal | ground | signal | ground   etc... is good

3) Grouping low harmonic waves at ONE end of the cable and high
harmonics at the other end is good as well

sine |  ground | slow CV | ground | fast CV | ground | square etc... will reduce
coupling

H^) harry

Heitor Alves wrote:

> Hi Ian!
>
> i'm also building the ray wilson's soundlab, and i'm recycling flat
> cables from computers... they are very easy to use and very flexible.
> i think they are good enough since the synth is to be used with
> batteries. Also they are free ;)
>
> heitor
>
> On Mon, 10 Jan 2005 23:44:25 +0100 (CET), ian maslen
> <maz at imaslen.wanadoo.co.uk> wrote:
> >
> >
> > Hi everyone, long time listener, first time caller.
> >
> > I'm building Ray Wilsons Soundlab synth and just about to connect the
> > circuit board up to the front panel.  My question is this: what kind of
> > cable should I be using?
> >
> > I was gonna use a load of single core wire I have but should it be multiple
> > stranded wire for extra flexibility (considering I'm gonna be taking it
> > apart a lot)?  What about multi core alarm cables?  I could group wires
> > together then and hopefully make it a bit tidier, but would the thin wires
> > handle the current?  Or should I be using sheilded cable?
> >
> > So many questions, I hope someone doesn't mind setting me straight.  I
> > promise to learn more so that I can pick your brains better in future...
> >
> > Cheers
> >
> > Maz
> >
> > ________________________________
> > Whatever you Wanadoo
> >
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