Compact sub on a mission JL Audio designed their TW1 subwoofers for tight spaces and tiny enclosures. Their 12TW1-4 12" subwoofer operates efficiently in an enclosure of only 0.65 cubic feet and, at only 4-5/8" deep, this workhorse will fit in all kinds of tight spots you wouldn't expect a subwoofer to go. You can power this sub with up to 300 watts RMS, so it's perfect for medium-sized systems. TW1 side view At only 4-5/8" deep, this TW1 sub can fit in some seriously small spaces. Unique construction The injection-molded mica-filled polypropylene cone with its rubber surround is housed in a specially designed cast-alloy frame, while JL Audio's patented concentric tube suspension allows the speaker's components to fit together more closely for a smaller profile. If you're looking for a subwoofer that brings maximum boom to minimal space, you're looking in the right place. Highlights: 12" 4-ohm subwoofer mica-filled polypropylene injection-molded cone with rubber surround power range: 75-300 watts RMS peak power handling: 600 watts frequency response: 24-200 Hz sensitivity: 85.15 dB top-mount depth: 4.61" sealed box volume: 0.65 cubic feet ported box volume: 1.125 cubic feet warranty: 1 year