SIRIUS SIR-PS1 8" Powered Subwoofer System

The all-new SIR-PS1 8" Powered Subwoofer is the perfect upgrade to any SIRIUSsatellite car stereo radio system. This high-performance subwoofer provides amore exciting, dynamic listening experience for your vehicle's stereo system,and is designed for quick, drop-in installation.The compact SIR-PS1 delivers plenty of punch its 8" subwoofer is teamed upwith an 80-watt RMS amplifier, while a second 8" non-powered speaker augmentsthe sound output. You'll enjoy strong, clear bass without giving up a lot ofspace.An array of controls lets you adjust the bass to match your system. Thelow-pass filter adjusts the range of frequencies amplified, while a phasecontrol ensures that the sub works with the speakers in your car, not againstthem.You can connect the SIR-PS1 to almost any existing stereo, thanks to itsuniversal inputs. Best of all, you don't need satellite radio to enjoy theimprovement it'll make all your music sound better, no matter the source.compact powered subwoofer8" woofer and 8" passive radiatorbuilt-in 80 watts RMS amplifier (peak power: 160 watts)frequency response: 20-200 Hzvariable low-pass crossover (70-160 Hz)variable phase control (0-180°)power/ground wiring harness includedpreamp- and speaker-level inputsdimensions: 8-5/8"W x 11-1/16"H x 11-5/8"D1 x 8-1/2"D2