Eminence Beta 12A-2 8-Ohm Speaker

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Eminence Beta 12A-2 8OHM Speaker SPECIFICATION Nominal Basket Diameter 12", 304.8mm Nominal Impedance* 8 ohms Power Rating** Watts 250W Music Program 500W Resonance 47Hz Usable Fre quency Range 43Hz - 3.8kHz Sensitivity*** 98dB Magnet Weight 38 oz. Gap Height 0.31", 7.92mm Voice Coil Diameter 2", 50.8mm THIELE & SMALL PARAMETERS Resonant Frequency (fs) 47Hz DC Resistance (Re) 5 Coil Inductance (Le) 0.64mH Mechanical Q (Qms) 6 Electromagnetic Q (Qes) 0.5 Total Q (Qts) 0.46 Compliance Equivalent Volume (Vas) 120.1 liters / 4.2 cu.ft. Peak Diaphragm Displacement Volume (Vd) 237cc Mechanical Compliance of Suspension (Cms) 0.29mm/N BL Product (BL) 10.8 T-M Diaphragm Mass Inc. Airload (MMs) 40 grams Efficiency Bandwidth Product (EBP) 94 Maximum Linear Excursion (Xmax) 4.4mm Surface Area of Cone (Sd) 538.9 cm2 Maximum Mechanical Limit (Xlim) 11mm MOUNTING INFORMATION Recommended Enclosure Volume Sealed 25.5-35.4 liters / 0.9-1.25 cu.ft. Vented 36.8-139 liters / 1.3-4.9 cu.ft. Driver Volume Displaced 122 cu.in. / 2 liters Overall Diameter 12.03", 305.5mm Baffle Hole Diameter 10.95", 278.1mm Front Sealing Gasket Fitted as standard Rear Sealing Gasket Fitted as standard Mounting Holes Diameter 0.25", 6.4mm Mounting Holes B.C.D. 11.59", 294.3mm Depth 4.57", 116mm Net Weight 7.5 lbs, 3.4 kg Shipping Weight 9.7 lbs, 4.4 kgs MATERIALS OF CONSTRUCTION Coil Construction Copper voice coil Coil Former Polyimide former Magnet Composition Ferrite magnet Core Details Vented and extended 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