DS18 SW10S4X 10" 1000W 4-Ohm Single Voice Coil Shallow Mount Subwoofer in Sealed Box DS18 10-Inch 1000W Max 500W RMS 4-Ohm Single Voice Coil Shallow Mount Subwoofer with Sealed Shallow Enclosure Sealed Enclosure Dimensions: 23.5" x 12.5" x 6" Frequency Response: 40-3.2KHz Mounting Depth: 3.5" Sensitivity: 90dB