Nominal Basket Diameter 12", 304.8mm Nominal Impedance* 6 ohms Power Rating** Watts 400W Music Program 800W Resonance 22Hz Usable Frequency Range*** 25Hz-125Hz Sensitivity 89.2 Magnet Weight 160oz. Gap Height 0.375", 9.53mm Voice Coil Diameter 2.5", 63.5mm Resonant Frequency (fs) 22Hz DC Resistance (Re) 4.29 Coil Inductance (Le) 1.48mH Mechanical Q (Qms) 13.32 Electromagnetic Q (Qes) 0.39 Total Q (Qts) 0.38 Compliance Equivalent Volume (Vas) 125.2 liters / 4.4 cu. ft. Peak Diaphragm Displacement Volume 659cc Mechanical Compliance of Suspension (Cms) 0.35mm/N BL Product (BL) 15.0 T-M Diaphragm Mass inc. Airload (Mms) 146 grams Efficiency Bandwidth Product (EBP) 56 Maximum Linear Excursion (Xmax) 13.0mm Surface Area of Cone (Sd) 506.7 cm2 Maximum Mechanical Limit (Xlim) 22mm Recommended Enclosure Volume Sealed 22.7-28.3 liters / 0.8-1 cu.ft. Vented 45.3-101.9 liters/1.6-3.6 cu.ft. Overall Diameter 12.32", 312.8mm Baffle Hole Diameter 10.98", 278.9mm Front Sealing Gasket fitted as standard Rear Sealing Gasket fitted as standard Mounting Holes Diameter 0.26", 6.6mm Mounting Holes B.C.D. 11.77", 299mm Depth 6.44", 164mm Net Weight 22 lbs., 10 kg Shipping Weight 23.8 lbs., 10.8 kg Copper voice coil Polyimide former Double stacked 80 oz. ferrite Vented and extended core 12-spoke die-cast aluminum basket Kevlar-reinforced paper cone Foam cone edge Dual inverted dust caps

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