CX122 Give 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". QSBASS12-VENTED The Q POWER 12" Single Heavy Duty Vented Subwoofer Enclosure features solid 5/8" MDF construction, charcoal carpet covering, a dual vented design, and terminal cup connectors. Turn your ride into a sound machine with the help of the Q POWER 12" Single Heavy Duty Vented Subwoofer Enclosure!