SoundQubed U4-500

POWER RATING 14.4V: @ 4Ω: 4x150 W RMS 14.4V: @ 2Ω: 4x250 W RMS 14.4V: @ 1Ω: 4x500 W RMS 14.4V: @ 4Ω: 2x500 W RMS ( Bridged ) 14.4V: @ 2Ω: 2x1000 W RMS ( Bridged ) Frequency Response: 10Hz - 20KHz ( 3dB ) Crossover: Channel 1-2: HPF ( High Pass Filter ): 15Hz - 6KHz ( -12dB/okt ) Variable LPF ( Low Pass Filter ): 50Hz- 6KHz ( -12dB/okt ) Variable Channel 3-4: HPF ( High Pass Filter ): 15Hz - 6KHz ( -12dB/okt ) Variable LPF ( Low Pass Filter ): 50Hz- 6KHz ( -12dB/okt ) Variable Bass Boost: 0-12dB ( 50Hz ) Signal-to-Noise Ratio: 100dB Input Voltage Sensitivity: 8-0.2V Minimum Supply Voltage: 9V Maximum Supply Voltage: 16V Dimensions ( mm ) 185 x 225 x 65.