Eminence Beta 12A-2 8-Ohm Speaker

Description

Eminence Beta 12A-2 8OHM Speaker

SPECIFICATIONNominal Basket Diameter 12″, 304.8mmNominal Impedance* 8 ohmsPower Rating**Watts 250WMusic Program 500WResonance 47HzUsable Frequency Range 43Hz – 3.8kHzSensitivity*** 98dBMagnet Weight 38 oz.Gap Height 0.31″, 7.92mmVoice Coil Diameter 2″, 50.8mmTHIELE & SMALL PARAMETERSResonant Frequency (fs) 47HzDC Resistance (Re) 5Coil Inductance (Le) 0.64mHMechanical Q (Qms) 6Electromagnetic Q (Qes) 0.5Total Q (Qts) 0.46Compliance Equivalent Volume (Vas) 120.1 liters / 4.2 cu.ft.Peak Diaphragm Displacement Volume (Vd) 237ccMechanical Compliance of Suspension (Cms) 0.29mm/NBL Product (BL) 10.8 T-MDiaphragm Mass Inc. Airload (MMs) 40 gramsEfficiency Bandwidth Product (EBP) 94Maximum Linear Excursion (Xmax) 4.4mmSurface Area of Cone (Sd) 538.9 cm2Maximum Mechanical Limit (Xlim) 11mmMOUNTING INFORMATIONRecommended Enclosure VolumeSealed 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 litersOverall Diameter 12.03″, 305.5mmBaffle Hole Diameter 10.95″, 278.1mmFront Sealing Gasket Fitted as standardRear Sealing Gasket Fitted as standardMounting Holes Diameter 0.25″, 6.4mmMounting Holes B.C.D. 11.59″, 294.3mmDepth 4.57″, 116mmNet Weight 7.5 lbs, 3.4 kgShipping Weight 9.7 lbs, 4.4 kgsMATERIALS OF CONSTRUCTIONCoil Construction Copper voice coilCoil Former Polyimide formerMagnet Composition Ferrite magnetCore Details Vented and extended core Basket Materials Pressed steel basketCone Composition Paper ConeCone Edge Composition Cloth cone edgeDust Cap Composition Solid composition paper dust cap