Archived from groups: rec.games.pinball (More info?
> This won't help at all. The noise is picked up in the amplifier board,
> so it is already in the signal that goes to the speakers.
> Moving the speaker wires and changing the hum is probably coming from
> some other effect.
Mmmm, yes and no. It depends on where it's picking the noise up from
in the first place.
On my Star Trek NG, for example, I went to coaxially shielded wire.
There was SUCH a large outrush from the capacitors on my homebrew floor
flasher driver board that it leaked into the audio system. Quad
shielded RG6 cleared it right up! But I wasn't running any real
-power- over it, just was using it to carry the line level outs to the
crossover and amplifiers.
I would play around with the routing of the wires inside the head
before I went and changed the wires, though. I'd definitely keep it
awayyyyyy from the DMD board.