Alpine KTA-200M Mono Power Pack Amp with Alpine W10S4 10" Subwoofer and Bass Knob - This bundle includes a Alpine KTA-200M Mono 400-Watt Power Pack Amplifier, a Alpine W10S4 10-inch Single 4 Ohm Subwoofer, a Alpine RUX-KNOB.2 Remote Bass Knob, a pry kit, and a Alpine coozy. Alpine KTA-200M Mono 400-Watt Power Pack Amplifier The KTA-200M fits in the open space behind Alpine’s iLX-W650 7-inch mech-Less (no CD/ DVD) Audio/Video receiver to create Alpine’s unique PowerStack application. The compact footprint of the amplifier (7-inch W x 1.5-inch H x 3.5-inch D) and the shallow chassis of the iLX-W650 (1.9-inch D) occupies the same depth as a traditional 2-DIN chassis, resulting in an easy, hideaway bass solution that adds more power to the sound system without taking up space. • CTA-2006 • PowerStack capable with the Alpine iLX-W650 • Alpine’s Class D Amplifier Circuit w/ Dynamic Peak Power (DPP) • 200W x 1 RMS (4Ω, 14.4V, ≤1% THD+N) • 200W x 1 RMS (2Ω, 14.4V, ≤1% THD+N) • 400W x 1 DPP (2Ω, 14.4V, ≤1% THD+N) • >85dB S/N (ref. 1W into 4Ω) • ≤0.1% THD+N (ref. 10W into 2Ω) • Single-side 22-pin connector • RCA inputs (selectable, Low range=0.2-4V) • Sound controls; Crossovers-Off/60Hz/80Hz/120Hz Linkwitz Riley LP Filter @ -24dB/Oct. (selectable); Input gain setting (variable) Alpine W10S4 10-inch Single 4 Ohm Subwoofer Overview: 10-inch single 4Ω subwoofer 250W RMS 750W peak power handling Frequency Response: 30Hz-200Hz 24Hz-200Hz frequency response 5-1/16-inch mounting depth Recommended Sealed box volume: 0.83 cu. Ft. Recommended Ported box volume: 1.51 cu. ft Alpine RUX-KNOB.2 Remote Bass Knob With the RUX-KNOB, get full control over your amplifier, conveniently from inside the car. With the RUX-KNOB installed inside the vehicle cabin, easily adjust the bass gain of your amp while seated inside.