Speaker Size (In): 12 Watts RMS: 1500 Impedance: S4 VCD (In): 4 Frequency Response (Hz): 60 – 3k Fs (Hz): 72 Qms: 13.2 Qes: 0.627 Qts: 0.6 Vas (Liters): 13.03 dBSPL: 96 BL (TM): 17 Xmax (MM): 15 Suspension Travel (MM): 30 Mounting Diameter (In): 11.25 Mounting Diameter (MM): 286 Mounting Depth (In): 5.625 Mounting Depth (MM): 143