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SPECIFICATION Nominal Basket Diameter 8'', 203mm Nominal Impedance* 8 ohms Power Rating Watts 225W Music Program 450W Resonance 69Hz Usable Frequency Range 100Hz-3kHz Sensitivity*** 97.8 Magnet Weight 59 oz. Gap Height 0.310'', 7.95mm Voice Coil Diameter 2'', 50.8mm THIELE & SMALL PARAMETERS Resonant Frequency (fs) 69Hz DC Resistance (Re) 5.4 Coil Inductance (Le) 0.82mH Mechanical Q (Qms) 6.43 Electromagnetic Q (Qes) 0.20 Total Q (Qts) 0.22 Compliance Equivalent Volume (Vas) 18.32 liters / .65 cu.ft. Peak Diaphragm Displacement Volume (Vd) 66cc Mechanical Compliance of Suspension (Cms) 0.35mm/N BL Product (BL) 14.1 T-M Diaphram Mass inc. Airload (Mms) 19 grams Efficiency Bandwidth Product (EBP) 307 Maximum Linear Excursion (Xmax) 3.0mm Surface Area of Cone (Sd) 218.2 cm2 Maximum Mechanical Limit (Xlim) 8.0mm MOUNTING INFORMATION Recommended Enclosure Sealed 8-16 liters / .30-.60 cu.ft. Vented 10-16 liters/.40-.60 cu.ft. Overall Diameter 8.02'', 203.71mm Baffle Hole Diameter 7.36'', 186.9mm Front Sealing Gasket fitted as standard Rear Sealing Gasket fitted as standard Mounting Holes Diameter 0.28'', 7.1mm Mounting Holes B.C. D. 8.60'', 218.4mm Depth 3.75'', 95mm Net Weight 10.0 lbs, 4.5 kg Shipping Weight 11 lbs, 4.9 kg MATERIALS OF CONSTRUCTION Coil Construction Copper voice coil Coil Former Polyimide former Magnet Composition Ferrite magnet Core Details Vented and extended core Basket Materials Die-cast aluminum basket Cone Composition Paper cone Cone Edge Composition Cloth cone edge Dustcap Composition Solid composition paper dust cap



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