Monolith by Monoprice M-12 V2 12in THX Certified Ultra 500-Watt Powered...

(RARE) Monitor Audio (Model: ASW 110) Active Powered Subwoofer TESTED

Monitor Audio Gold Signature GS FX Back Speakers C-CAM RST Wood Wired

SVS SB-2000 Pro Subwoofer Driver In Black Glossy Box. NO AMPLIFIER.

Paradigm Reference Seismic - 10 Subwoofer - for parts only

MONITOR AUDIO RSW12 SUBWOOFER DRIVER

Velodyne Optimum-10 and /SPL-10 U 10" Subwoofer Driver

Origin Acoustics SUBV12 12” Powered Subwoofer – Blows Fuses – For Parts/Repair