Monoprice 8 inch 60-Watt Powered Subwoofer, Black. Excellent Condition.

Polk Audio Powered 10" Active Home Theater Subwoofer Silver/Black

Audioengine S8 Powered 8 Inch 250W Subwoofer - AS IS

Klipsch Cinema 600 10" Wireless Replacement Subwoofer ONLY - NEW in Box

BESTISAN 6.5’’ Powered Home Audio Subwoofer with Deep Bass in Black SW65D

VINTAGE YAMAHA NS-WSW40 Rare(SWS40)Home Theater Powered Subwoofer Speaker TESTED

Monoprice 9723 12" Powered Subwoofer 150W RMS Home Theater Bass Reflex

Acoustic Audio By Goldwood 8 Inch Subwoofer PSW8 300 W Peak Power