Polk Audio PSW10 100 Watts Powered Subwoofer

Polk Audio PSW111 8" High Performance Power subwoofer

Polk Audio Powered Subwoofer Sub 8”

POLK AUDIO PSW108 Powered Subwoofer Complete Package 110 Volts

POLK AUDIO PSW404 10" SUBWOOFER. High quality.

Infinity BU-1 Active Powered Down Firing Subwoofer 8" Woofer Tested

Polk Audio PSW100 10 Inch Powered Subwoofer Tested And Sounds Great

Polk Audio PSW110 10” Powered Subwoofer Active Home Theater Black Tested