Speaker Size (In): 6.5 Watts RMS: 600 Watts Peak: 2400 Impedance: D4 VCD (In): 2 Piston Diameter (In): 5.5 Fs (Hz): 47.78 Qms: 5.152 Qes: 0.864 Qts: 0.740 Vas (Liters): 2.398 Xmech (MM): 48 Xmax (MM): 10 Frame OD (In): 7 7/16 Frame OD w/Gasket (In): 7 9/16 Mounting Diameter (In): 6 5/16 Mounting Depth (In): 6 Motor Diameter (In): 6 Motor Depth (In): 2 13/16 Woofer Displacement (CuFt): 0.05 Ported Enclosure (CuFt): 0.25 – 0.75