> --- In Doepfer_a100@y..., "mdimmm" <mdimmm@y...> wrote:
> > As anyone who owns a spring reverb module knows, the
> A-100's
> > transformer generates a lot of hum. In addition to the spring
> > reverb, I use a lot of electromagnetic pick-ups (like on a

guitar)

> > as external signal inputs and find the hum almost
> unacceptable
> > with this set-up. I hope someone might have suggestions for
> > shielding the transformer, or knows of other ways to

decrease

> > the hum generated by the A-100.

ok, re-read your question. sorry to answer re reverb hum when
you're speaking primarily of transformer hum in general. no idea
how to shield it (good question). and i'm no ecectrician but i find
putting an ebtech inline transformer in the signal path to or from
the A100 to work 98% of the time. these are handy regardless.
for live shows i run my A100 into stereo guitar amps alot (plus DI
boxes) and nearly always have hum in one amp w/o the ebtech
box (model#HE2PKG), especially in europe where it's necessary
to use a power transformer to step down to 120vAC. also in the
studio i'm often dealing w impedence nightmares and the little
box usually kills the hum somehow.
duff