Blaupunkt 8 Amplified Subwoofer 300 Watts GTHS80 The Blaupunkt 300 Watt 8 Amplified Subwoofer (GTHS80) provides the perfect base tone for your car audio. Made with the highest technical quality to ensure maximum reliability and durability, the GTHS80 8 Car audio Amplified Subwoofer features variable bass boost, adjustable input sensitivity, and a low pass filter. Maximum power is 300 watts, with RMS power handling of 100 watts. 8 Slim Woofer RCA Low Level Input: 0.15 0.55V: High Level Input : 6V Power and Protection LED Variable Bass Boost 0 to +18dB Thermal Short and Overload Protection Circuits Phase Selector Switch: 0 or 180 Variable Input Gain Control Adjustable Input Sensitivity Selector(0.15V 0.5V) Variable Low Pass Filter (40 250Hz) Max Power: 300 Watts RMS Power: 100 Watts THD: <1% Signal-to-Noise Ratio:>88dB Frequency Response: 20Hz 250Hz Input Sensitivity, High Level: 0.5V Input Sensitivity, Low Level: 150mV Fuse Rating: 30A Dimensions: 13.78" x 8.86" x 2.95" (350mm x 225mm x 75mm) .