2 Series 12" Powered Subwoofer 12" (300mm) PolyPlas low-frequency transducer, Braced enclosure with Slipstream rear-firing bass port 29Hz – 150Hz, 300W RMS built-in amplifier, 600W peak dynamic power Line-level and LFE inputs, Continuously adjustable low-pass crossover frequency control (50Hz – 150Hz; 24dB/octave), Phase switch, levelcontrol, bass boost and signal-sensingauto power, 445mm x 381mm x 435mm, Weight: 17.2 kg