Alpine 250W Powered Sub Enclosure with 10 Inch Bassline Subwoofer & Amp PWA-S10V 10 inch mounted subwoofer and amplifier in a ported enclosure 250 watts of total system power with both sub and amp Bassline grill for stylish and protective finish Subwoofer features 2 ohm design, frequency response of 26 400 Hz, and poly foam surround Mono channel amplifier features Class D platform, MOSFET power, and 80% greater efficiency