DELTA 15LF-4 15" American Standard Series Speaker

Low frequency woofer for pro audio as a mid-bass or floor monitor in a sealed enclosure. Also suitable as a woofer in vented, bass guitar or PA enclosures. Applications  Subwoofer | Woofer | Midbass | Pro Audio | Bass Guitar Box Type: Sealed | Vented SpecificationsDownload Spec Sheet Download Cab Design SPECIFICATION Nominal Basket Diameter 15", 381 mm Nominal Impedance* 4 Ω Power Rating* Program Power 1200 W Watts 600 W Resonance 40 Hz Usable Frequency Range 40 Hz - 2.2 kHz Sensitivity* 95 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) 3.37 Ω Coil Inductance (Le) 0.76m H Mechanical Q (Qms) 6.22 Electromagnetic Q (Qes) 0.53 Total Q (Qts) 0.49 Compliance Equivalent Volume (Vas) 253.93 liters / 8.97 cu.ft. Peak Diaphragm Displacement Volume (Vd) 521.2 cc Mechanical Compliance of Suspension (Cms) 0.24 mm/N BL Product (BL) 10.32 T-M Diaphragm Mass Inc. Airload (MMs) 66 grams Efficiency Bandwidth Product (EBP) 76 Maximum Linear Excursion (Xmax) 5.97 mm Surface Area of Cone (Sd) 873 cm2 Maximum Mechanical Limit (Xlim) 16.5 mm MOUNTING INFORMATION Recommended Enclosure Volume Sealed 52.95-97.69 liters / 1.87-3.45 cu.ft. Vented 75.04-154.33 liters / 2.65-5.45 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 6.3", 160 mm Net Weight 12.8 lbs, 5.81 kg Shipping Weight 14.8 lbs, 6.71 kgs 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 Dust Cap Composition Solid composition paper dust cap Frequency Response