Eminence Beta 12A

THIELE & SMALL PARAMETERS Resonant Frequency (fs) 47Hz DC Resistance (Re) 5.0 Coil Inductance (Le) 0.64mH Mechanical Q (Qms) 6.00 Electromagnetic Q (Qes) 0.50 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 Diaphram 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 Sealed 25.5-35.4 liters, 0.9-1.25 cu.ft. Vented 36.8-139 liters/1.3-4.9 cu.ft. 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 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 Pressed steel basket Cone Composition Paper Cone Cone Edge Composition Cloth cone edge Dustcap Composition Solid composition paper dust cap