Pioneer TS-A300S4 - 1500 Watts 12" 30cm Single Voice Coil Car Subwoofer Get powerful, punchy bass in your car – from the pedigree of world record-breaking subs. The TS-A300S4 features a combined IMPP cone, which makes the body ultra-rigid yet lightweight, giving you low distortion and powerful bass at high sound press levels. Upgrade the original sound system of your car. Our A-series subwoofers compliment our A-series speakers to give you that sound upgrade solution that you have been looking for. The A-series subwoofers combine superior high quality sound, design and technology, along with carefully selected materials to improve bass response. When matched with Pioneer's GM-A series of amplifiers, you can enjoy powerful, solid bass in your car, no matter what volume level.