Eminence DELTA-15A 15″ Naked Speaker

SPECIFICATION Nominal Basket Diameter 15″, 381 mm Nominal Impedance* 8 Ω Power Rating* Program Power 800 W Watts 400 W Resonance 40 Hz Usable Frequency Range 48 Hz – 4 kHz Sensitivity* 100 dB Magnet Weight 56 oz. Gap Height 0.375″, 9.5 mm Voice Coil Diameter 2.5″, 64 mm THIELE & SMALL PARAMETERS Resonant Frequency (fs) 40 Hz DC Resistance (Re) 6.3 Ω Coil Inductance (Le) 0.64m H Mechanical Q (Qms) 8.05 Electromagnetic Q (Qes) 0.57 Total Q (Qts) 0.53 Compliance Equivalent Volume (Vas) 270.7 liters / 9.56 cu.ft. Peak Diaphragm Displacement Volume (Vd) 233 cc Mechanical Compliance of Suspension (Cms) 0.26 mm/N BL Product (BL) 13.2 T-M Diaphragm Mass Inc. Airload (MMs) 62 grams Efficiency Bandwidth Product (EBP) 70 Maximum Linear Excursion (Xmax) 2.7 mm Surface Area of Cone (Sd) 864.6 cm2 Maximum Mechanical Limit (Xlim) 11.1 mm MOUNTING INFORMATION Recommended Enclosure Volume Sealed 37-42.5 liters / 1.3-1.5 cu.ft. Vented 82-161.4 liters / 2.9-5.7 cu.ft. Driver Volume Displaced 0.128 cu.ft. / 3.62 liters Overall Diameter 15.15″, 384.8 mm Baffle Hole Diameter 13.87″, 352.3 mm Front Sealing Gasket Yes Rear Sealing Gasket Yes Mounting Holes Diameter 0.25″, 6.4mm Mounting Holes B.C.D. 14.56″, 369.8mm Depth 6.05″, 153.7 mm Net Weight 12.3 lbs, 5.58 kg Shipping Weight 14.4 lbs, 6.53 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