Eminence Beta 8A 8" Loudspeaker

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Eminence Beta 8A 8 Inch Loudspeaker SPECIFICATION Nominal Basket Diameter 8", 203.2mm Nominal Impedance* 8 ohms Power Rating** Watts 225W Music Program 450W Resonance 65Hz Usable F requency Range 78Hz - 4.5kHz Sensitivity*** 95.1dB Magnet Weight 34 oz. Gap Height 0.31", 7.92mm Voice Coil Diameter 2", 50.8mm THIELE & SMALL PARAMETERS Resonant Frequency (fs) 65Hz DC Resistance (Re) 5.99 Coil Inductance (Le) 0.49mH Mechanical Q (Qms) 4.95 Electromagnetic Q (Qes) 0.42 Total Q (Qts) 0.38 Compliance Equivalent Volume (Vas) 23.3 liters / 0.82 cu.ft. Peak Diaphragm Displacement Volume (Vd) 63cc Mechanical Compliance of Suspension (Cms) 0.37mm/N BL Product (BL) 9.6 T-M Diaphragm Mass Inc. Airload (MMs) 16 grams Efficiency Bandwidth Product (EBP) 156 Maximum Linear Excursion (Xmax) 3mm Surface Area of Cone (Sd) 210 cm2 Maximum Mechanical Limit (Xlim) 7.4mm MOUNTING INFORMATION Recommended Enclosure Volume Sealed 5.7-9.9 liters / 0.2-0.35 cu.ft. Vented 8.5-19 liters / 0.3-0.67 cu.ft. Driver Volume Displaced 46.3 cu.in. / 0.76 liters Overall Diameter 8.24", 209.2mm Baffle Hole Diameter 7.13", 181mm Front Sealing Gasket Fitted as standard Rear Sealing Gasket Fitted as standard Mounting Holes Diameter 0.22", 5.5mm Mounting Holes B.C.D. 7.75", 196.9mm Depth 3.5", 89mm Net Weight 6.6 lbs, 3 kg Shipping Weight 7.4 lbs, 3.4 kgs MATERIALS OF CONSTRUCTION Coil Construction Aluminum voice coil Coil Former Polyimide former Magnet Composition Ferrite magnet Core Details Vented core Basket Materials Pressed steel basket Cone Composition Paper Cone Cone Edge Composition Cloth cone edge Dust Cap Composition Solid composition paper dust cap Show more