[sdiy] spring reverb & hum

[harrybissell]

Mount the spring reverb in a magnetic shielded enclosure.
Mu-Metal works the best but costs a ton...

soft iron (or worse, steel) is less good and weighs a ton.

Replace the transformer with a toroid will help at that end... and a
steel box around the power supply is good.

Try ROTATING the reverb spring... it can be less sensitive in other
orientations...

Their advice is the classic... distance is a good attenuator (and its cheap
if you can afford it...)

H^) harry

"mdimmm at hotmail.com" wrote:

> Hello
>
> My Doepfer A-100 Modular's spring reverb picks up a terrible amount of hum
> from the transformer. Doepfer's only suggestion was to move the unit further
> away from the rack with the transformer in it.
>
> Any suggestions on how to make a spring reverb less hum-sensitive?
>
> Thanks a ton
>
> Mdimm