Pioneer SW-8 100 Watt RMS Subwoofer System (Discontinued by Manufacturer) Frequency Response-38 Hz to 150 Hz; Physical Characteristics-Subwoofer Height-14.19; Driver Type-8 Woofer; Physical Characteristics-Subwoofer Width-12.19; Audio-RMS Output Power-100 W;Physical Characteristics-Subwoofer Depth-12.19; Power Description-Input Voltage-110 V AC;