Bowers and Wilkins recently released their latest 600 Series ASW610XP powerful subwoofers. Active closed-box subwoofer system ASW610XP features Crossover Tuning, Mushrooms, Frequency range-6dB at 18Hz and 25/140Hz adjustable (EQ at A), Frequency response±3dB 25Hz – 40/140Hz adjustable (EQ at A), AmplifierPower output 200W + 200W, Rated power consumption 80W / 1W standby, Input impedance 33k?, Input {Line In (RCA Phono), Speaker in (Binding post), 12v trigger (3.5mm jack), Low-pass filter Active 4th-order and, variable cut-off frequency}.