DD Audio VOM8a-S4 Midrange (2Pack)

Watts RMS: 60 - 300 Voice Coil Diameter (Inches): 1.5 Impedance: S4 Frequency Response (Hz): 80 - 8k Fs (Hz): 55 Qms: 2.273 Qes: 0.352 Qts: 0.305 Vas (Liters): 27.767 dBSPL: 93 Mounting Diameter (In): 7 Mounting Diameter (MM): 177.8 Mounting Depth (In): 3 Mounting Depth (MM): 76.2 Shipping Weight (Lbs): 5.