hi David,

> I does seem like a ground issue though since the noise module hums

as do the non

> working cwejman modules. Funny thing is that the spring reverb does

not hum...

I think it may be the ground too. From the photo of the kit at
Doepfer's site, to produce -12V - 0 - +12V from two identical
wallwarts, the '0V' from neither of them can actually be ground
(hence why it is OK to run them in series, with the '+12V' of one
connected to the '0V' of the other, essentially giving the required
24V), and I'm assuming that you have been given something very
similar by Analog Haven. Thus when you have modules hooked up and
connected to other equipment, there may not be a decent ground
reference for the modules connected to the kit, which might then act
weirdly (though I'm a little surprised that any patch leads are not
supplying this). I'd suggest connecting the ground on the kit bus
board to a suitable ground somewhere on the external equipment, and
see what that does.

Tim