I have a ASW8100 subwoofer powered amplifier. The speaker works (I direct connected it), the Onkyo receiver works (I connected it to another subwoofer). The outlet works and the line into the plate amplifier has juice (I used a cheap line curcuit tester). What I need now is a wiring schema to trace what is wrong to see if I can fix it cheap or need to get a used subwoofer.