12 Zoll (30 cm) extreme resilient SPL subwoofer, 100 mm aluminium double voice coil, 2x1 Ohm, 2x 1500 W RMS, 2x 3000 W max power, Kevlar-paper sandwich membrane. mounting depth 19,6 cm diameter 28,5 cm weight 26 kg cabinet recommendation: Bass reflex cabinet for music 70 lt, for SPL > 95 lt 2x 1000 W RMS. TECHNICAL DATA DIN - size 12 inch Mounting diameter 11,30 inch Mounting depth 7,72 inch Nominal impedance) 2x 1 Ohm Number of voice coils 2