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SPECIFICATION Nominal Basket Diameter 15", 381mm Nominal Impedance* 4 ohms Power Rating Watts 300W Music Program Resonance 51.Hz Usable Frequency Range 45Hz-3.0kHz Sensitivity*** 96.9 Magnet Weight 56 oz. Gap Height .38", 9.53mm Voice Coil Diameter 2.5", 63.5mm THIELE & SMALL PARAMETERS Resonant Frequency (fs) 51Hz DC Resistance (Re) 2.9 Coil Inductance (Le) 0.80mH Download PDF Spec Sheet Mechanical Q (Qms) 4.94 Electromagnetic Q (Qes) 0.54 Total Q (Qts) 0.49 Compliance Equivalent Volume (Vas) 108.2 liters / 3.82 cu.ft. Mechanical Compliance of Suspension (Cms) 0.11mm/N BL Product (BL) 12.2 T-M Diaphram Mass inc. Airload (Mms) 87 grams Efficiency Bandwidth Product (EBP) 94 Maximum Linear Excursion (Xmax) 5.0mm Surface Area of Cone (Sd) 823.7 cm2 Maximum Mechanical Limit (Xlim) 8.0mm MOUNTING INFORMATION Recommended Enclosure Sealed 40-71 liters/1.4-2.5 cu.ft. Vented 45-170 liters/1.6-6.0 cu.ft. Overall Diameter 15.15", 384.81mm Baffle Hole Diameter 13.87",352.3mm Front Sealing Gasket fitted as standard Rear Sealing Gasket Mounting Holes Diameter 0.25", 6.4mm Mounting Holes B.C. D. 14.56", 369.8mm Depth 6.25", 159mm Net Weight 11.9 lbs., 5.4 kg Shipping Weight 14.1 lbs., 6.4 kg MATERIALS OF CONSTRUCTION Coil Construction Copper voice coil Coil Former Polyimide former Magnet Composition Ferrite magnet Core Details Vented core Basket Materials Pressed Steel basket Cone Composition Treated Paper Cone Cone Edge Composition Sealed Cloth Surround Dustcap Composition Treated paper dust cap
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