Pyle PLPPS110 Single 10-Inch Slim Design Forward Vented Enclosure Subwoofer System 10'' High Power Subwoofer - 4 Ohm Impedance Black Molded Polypropylene Cone - 200 Watts RMS / 400 Watts Peak 2'' Voice Coil - Frequency Response: 40Hz-4Khz Foward Firing Slot Port - SPL: 90dB 30 Oz Magnet Structure - Dimensions: 18''W x 14''H x 13.6''D