Eton Ενεργό subwoofer MOVE 12-400A Membrane diameter (mm) 300 Mounting depth (mm) 200 RMS power handling per voice coil 2x 500W Efficiency 1W / 1mtr. 87,4dB Number of voice coils 2 Impedance per voice coil 2 x 2 Ohm Membrane material glass fibre Basket material aluminium diecast Voice coil diameter (mm) 72