JL Audio 12TW1-4 TW1 Series Thin-Line 12" SubwooferCompact 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. At only 4 5 8" deep, this TW1 sub can fit in some