Ok I really don't know anything about hooking up amps.. so I have a silly question. My amp only outputs sound to the speaker if one of the speaker terminals per channel is grounded. Is this normal? I.e. if I just screw my speaker wire into the terminals no sound comes out. Add a ground to one of the two screws on the left and right channel and everything is peachy.
Mind you i bought this amp at a junk shop for $12 so the amp could be broken in some way.. but I never knew for sure if having to add a ground to the speaker terminals was normal or not.