The Performance Series P12SW powered subwoofer is just the ticket to bring your home theater system to life.The P12SW performs like a pro, with technology developed by JBL's Professional division. Equipped with JBL's tried-and-true PolyPlas woofer, this subwoofer delivers the low-frequency goods. Special effects in your favorite movies, assisted by the FreeFlow flared port, are loud and clear, without unwanted distortion or boominess. An efficient digital amplifier backs up the 12-inch woofer with high output. Sturdy gold-plated, 5-way binding posts provide a strong connection that preserves all of the nuances of the original program. Convenient level and crossover-frequency controls and a phase switch let you tailor the P12SW's performance to your room acoustics or taste. The computer-designed, lock-mitred cabinet virtually eliminates distortion, and its slim, front-firing, European profile won't overpower your room.