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.
SPECIFICATION Nominal Basket Diameter 15", 381 mm Nominal Impedance 8 ohms Power Rating Watts 400 W / Music Program 800 W Resonance 40 Hz Usable Frequency Range 48 Hz - 4 kHz Sensitivity 100 Magnet Weight 56 oz. Gap Height 0.375", 9.53 mm Voice Coil Diameter 2.5", 63.5 mm
THIELE & Small Parameters Resonant Frequency (fs) 40 Hz DC Resistance (Re) 6.3 Coil Inductance (Le) 0.64 mH 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/2.9-5.7cu.ft. Overall Diameter 15.15", 384.8 mm Baffle Hole Diameter 13.77", 349.6 mm Front Sealing Gasket fitted as standard Rear Sealing Gasket fitted as standard Mounting Holes Diameter 0.25", 6.4 mm Mounting Holes B.C.D. 14.56", 369.9 mm Depth 6.05", 154 mm
MATERIALS of Construction Aluminum voice coil Polyimide former Ferrite magnet Vented core Pressed steel basket Paper Cone Cloth cone edge Solid composition paper dust cap