Alto TS 312S Subwoofer, Active 12"" Subwoofer, 1000 Watt Class D power amplifier (2000 Watt Peak), 12"" Woofer, Frequency range (-3 dB): 44 Hz ~ 95 Hz, Frequency spectrum (-10 dB): 38 Hz - 110 Hz, Maximum level: 129 dB (@ 1m), 2 XLR + 6.35 mm combo inputs, 2 XLR Outputs, Volume knob, Limiter with LED, Switch for DSP output mode with LED, Switch for Phase inversion with LED, Switch for extended bass playback with LED, Power switch with LED, Electronic clip, thermal and transducer overload protection circuit, Internally strengthened MDF housing, Integrated tripod insert (35 mm), Dimensions (H x W x D): 456 x 459 x 505 mm, Weight: 25 kg, Colour: Black