Just pulled my RS 1000 onix rocket tower speakers out of the closet after 3 and 1/2 years and can't get my bottom 8" woofers to work. All the top speakers are working fine. They are 7 years old and bought from the now defunked **********. Neither bottom speakers are working on these tower speakers. Both are hooked up through a subwoofer plate amp attached to the back of the lower cabinet. I have changed the fuses and the power rocker switch lights up but the amp don't get warm nor produce sound. When I move the phase dial on the amps the speakers move but still no sound. I have tried different power cords but no luck. Looking for suggestions, maybe where I could send the amps for repair. Don't have a clue who made these amps the back reads Model GSW 300.