Alpine SWT-12S4 1500W Max Single 12" Bass Reflex Sealed Subwoofer Tube Enclosure With 1500W peak power handling, this ready-to-use bass reflex subwoofer tube is just for big bass fans. A protective grille ensures that nothing sliding around in the trunk damages the woofer. General Features: 12" 4 ohm Bass Reflex Series Subwoofer 1500 Watts Peak Power Handling 300 Watts RMS Power Handling Heavy-Duty Subwoofer Grill Stitched Alpine Logo Carpeted Exterior Push SPK Terminal Installation Brackets and Belts Included Frequency Response: 28 - 200 Hz Sensitivity: 92 dB Speaker Impedance: 4 Ω Enclosure Dimensions: 12.75"W x 26" D Authorized Internet Dealer 1-year Manufacturer's Warranty Subwoofer Features: 12" Passive Subwoofer Push SPK Terminal Voice coil size/type Sensitivity: 92dB Enclosure Features: Tube enclosure Black Carpet Finish with White Alpine Logo Grille included