Subwoofer will need to be wired and placed into box.CX122Give your car's audio system extra bump with these Boss CX122 Subwoofers. Offering a 1400 watt max and a 700 watt RMS per sub, these Boss CX122 subs have a heavy-stamped steel frame, single 4 Ohm voice coils and a custom-tooled injected cone. The Boss CX122 subs have a mounting depth of 4-1/8" and are 12". TW12-SINGLEThis Q Power TW12 Single 12" Sealed Car Audio Subwoofer Box Enclosures feature solid 5/8" MDF construction, charcoal carpet covering, terminal cup connectors, 0.9 cubic feet of air space per Box, and a mounting depth of 5.5 inches. Turn your ride into a sound machine with the help of the QPOWER TW12 Single 12" Sealed Car Audio Subwoofer Sub Box Enclosures!