Best Buy has JBL – GX Series 12″ Single-Voice-Coil 4-Ohm Subwoofer – Black for $29.99 (Was $129.99).
Keep the music thumping during your commute with this JBL subwoofer. It can handle 300W of power with a peak of 1200W for booming sounds, and it reproduces a frequency range of 23Hz – 450kHz to capture extreme bass output. This JBL subwoofer is just 6.0625 inches deep for placement in tight places.