JBL1200D (STAGE series) bass reflex subwoofer 12" (300 mm).

High impact, low cost
JBL designed their Stage Series subwoofers to give you great sound at an attractive price. Now they've created the Stage 1200D enclosure,
offering you the kind of punch you expect from JBL in a surprisingly affordable package.  

500 watts of sheer impact
The Stage 1200D ported enclosure comes loaded with two of JBL's Stage 122AM 12" subwoofers, which handle up to 500 watts RMS together.
The enclosure's 2-ohm impedance gets the most possible power out of your mono amp.
The slot-ported enclosure is made from rugged 5/8" MDF covered with black carpet to withstand the bumps and bruises of life in a car.
JBL tunes the enclosure for maximum performance, so you can count on impressive low-end punch.