DELTA 15B 15" American Standard Series Speaker | 16-ohms

Recommended 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. Applications  Woofer | Midbass | Pro Audio Box Type: Sealed | Vented SpecificationsDownload Spec Sheet Download Cab Design SPECIFICATION Nominal Basket Diameter 15", 381 mm Nominal Impedance* 16 Ω Power Rating* Program Power 800 W Watts 400 W Resonance 45 Hz Usable Frequency Range 64 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) 45 Hz DC Resistance (Re) 11.3 Ω Coil Inductance (Le) 1.35m H Mechanical Q (Qms) 6.54 Electromagnetic Q (Qes) 0.67 Total Q (Qts) 0.61 Compliance Equivalent Volume (Vas) 204 liters / 7.2 cu.ft. Peak Diaphragm Displacement Volume (Vd) 137 cc Mechanical Compliance of Suspension (Cms) 0.19 mm/N BL Product (BL) 17.6 T-M Diaphragm Mass Inc. Airload (MMs) 64 grams Efficiency Bandwidth Product (EBP) 68 Maximum Linear Excursion (Xmax) 1.6 mm Surface Area of Cone (Sd) 856.3 cm2 Maximum Mechanical Limit (Xlim) 11.1 mm MOUNTING INFORMATION Recommended Enclosure Volume Sealed 31-42.5 liters / 1.09-1.5 cu.ft. Vented 81.8-87.8 liters / 2.89-3.1 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 14.3 lbs, 6.49 kgs MATERIALS OF CONSTRUCTION Coil Construction Copper 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 Frequency Response