I've got one of those EP350 amps. I had a similar problem until I twiddled with the adapter to some degree.

Double check it with a portable player of some kind directly connected (headphone out->sub in) or with your CD player (same deal, right channel out directly the sub) to verify that it makes noise.

Last edited by kcarlile; 03/03/10 06:06 AM.
I am the Doctor, and THIS... is my SPOON!