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Eminence DELTA-15ARecommended for professional audio as a mid-bass or vocal wedge in a sealed enclosure. Also suitable as a mid-bass or woofer in vented enclosures.SpecificationNominal Basket Diameter 15", 381mmNominal Impedance* 8 ohmsPower Rating**Watts 400WMusic Program 800WResonance 40HzUsable Frequency Range 48Hz - 4kHzSensitivity*** 100dBMagnet Weight 56 oz.Gap Height 0.37", 9.53mmVoice Coil Diameter 2.5", 63.5mmThiele & Small ParametersResonant Frequency (fs) 40HzDC Resistance (Re) 6.3Coil Inductance (Le) 0.64mHMechanical Q (Qms) 8.05Electromagnetic Q (Qes) 0.57Total Q (Qts) 0.53Compliance Equivalent Volume (Vas) 270.7 liters / 9.56 cu.ft.Peak Diaphragm Displacement Volume (Vd) 233ccMechanical Compliance of Suspension (Cms) 0.26mm/NBL Product (BL) 13.2 T-MDiaphragm Mass Inc. Airload (MMs) 62 gramsEfficiency Bandwidth Product (EBP) 70Maximum Linear Excursion (Xmax) 2.7mmSurface Area of Cone (Sd) 864.6 cm2Maximum Mechanical Limit (Xlim) 11.1mmMounting InformationRecommended Enclosure VolumeSealed 37-42.5 liters / 1.3-1.5 cu.ft.Vented 82-161.4 liters / 2.9-5.7 cu.ft.Driver Volume Displaced 220.8 cu.in. / 3.62 litersOverall Diameter 15.15", 384.8mmBaffle Hole Diameter 13.77", 349.6mmFront Sealing Gasket Fitted as standardRear Sealing Gasket Fitted as standardMounting Holes Diameter 0.25", 6.4mmMounting Holes B.C.D. 14.56", 369.9mmDepth 6.05", 154mmNet Weight 12.3 lbs, 5.6 kgShipping Weight 14.4 lbs, 6.5 kgsMaterials of ConstructionCoil Construction Aluminum voice coilCoil Former Polyimide formerMagnet Composition Ferrite magnetCore Details Vented coreBasket Materials Pressed steel basketCone Composition Paper ConeCone Edge Composition Cloth cone edgeDust Cap Composition Solid composition paper dust cap
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