Hello,Up for sale in good condition Klipsch Sub 12, 300-600 watts,12" subwoofer driver works excellent but amplifier plate needs repair,however tested with NHT, S1 subwoofer amplifier 60-120 watts with fantastic bass response,You can experience either use subwoofer enclosure with NHT subwoofer amplifier or to repair the amplifier plate,Subwoofer with NHT subwoofer amplifier for &150 and subwooer only for $100,Cash&Local pickup only