Kamron Audio KA-10 Passive Subwoofer - Tested

RCA RT2870 Wired Passive Subwoofer - Tested

Philips Subwoofer AV Powered Passive Home Theater Speaker, SW6500E, Untested

Phillips Subwoofer

Sony SS-WS52B Passive Subwoofer

10" SPEAKER FOAM EDGE SURROUND HIGH QUALITY 4 PACK REPAIR CLOTH SUB WOOFER

Philips HTS3564/F7 Wired 1.1 Subwoofer Speaker, Black Rectangular 4 Ohm- TESTED

Philips HTS6500 Subwoofer SW6500E Surround Sound Home Theater Audio Unit