Speaker Size (In): 10 Watts RMS: 150 Watts Peak: 300 Impedance: S4 VCD (In): 1.5 Frequency Response (Hz): 80 – 12k Fs (Hz): 71 Qms: 5.57 Qes: 1.17 Qts: 0.97 Vas (Liters): 40.35 dBSPL: 96 Mounting Diameter (In): 9 Mounting Diameter (MM): 229 Mounting Depth (In): 4 1/4 Mounting Depth (MM): 108