Kali Audio WS-12, Active 12"" Subwoofer, Crossover with 6 crossover frequencies, Limiter protected circuit design, Bypass via footswitch, Class D amplifier, Power: 1000 W peak / 500 W continous, Frequency response: 23 - 160 Hz (-10 dB), Frequency range: 30 Hz - 160 Hz (+/- 3 dB), Max. SPL (sound pressure level): 123 dB, Inputs: XLR, 6.3 mm jack (balanced), RCA, Input sensitivitiy: XLR/6.3 mm jack: 106 dB SPL @1m +4 dBu, RCA input sensitivitiy: 106 dB SPL @ 1m -10 dBV, Dimensions (W x D x H): 488 x 437 x 521 mm, Weight: 27 kg