12" (30cm) Subwoofer (4Ohm).
Features of the Alpine SWL-1242 include:
* 12" Woofer with dual layer 4 Ohm voice coil
* Full metal 5-way binding posts with fixed nuts that take up to 10 mm2 blanc cable or spades or 4mm bananas
* Polished Chrome back-plate
* Double stontium magnet, 115 oz
* Fibre-enforced double layer membrane
* 8" black Nomex spider
* Edge suspension of butyl rubber
* Thoroughly stiffened solid steel frame
* High linear excursion for max. SPL
* Vented pole & back vented spider
* Peak Power 800W
* RMS Power 250W
* High Power Handling