KAPPA PRO-15LF-2 Professional Series FEATURES: [ Nominal Basket Diameter 15", 381 mm [ Nominal Impedance 8 ohms [ Power Rating Watts 600 W / Music Program 1200 W [ Resonance 35 Hz [ Usable Frequency Range 38 Hz - 1.8 kHz [ Sensitivity 97.8 [ Magnet Weight 120 oz. [ Gap Height 0.375", 9.53 mm [ Voice Coil Diameter 3", 76.2 mm [ Resonant Frequency (fs) 35 Hz [ DC Resistance (Re) 6.12 [ Coil Inductance (Le) 1.00 mH [ Mechanical Q (Qms) 9.57 [ Electromagnetic Q (Qes) 0.32 [ Total Q (Qts) 0.31 [ Compliance Equivalent Volume (Vas) 172.5 liters / 6.1 cu. ft. [ Peak Diaphragm Displacement Volume 507 cc [ Mechanical Compliance of Suspension (Cms) 0.21 mm/N [ BL Product (BL) 20.4 T-M [ Diaphragm Mass inc. Airload (Mms) 100 grams [ Efficiency Bandwidth Product (EBP) 109 [ Maximum Linear Excursion (Xmax) 6.7 mm [ Surface Area of Cone (Sd) 760.0 cm2 [ Maximum Mechanical Limit (Xlim) 18.0 mm [ Recommended Enclosure Volume [ Sealed N/A [ Vented 76.5-164 liters/2.7-5.8 cu.ft. [ Overall Diameter 15.21", 386.4 mm [ Baffle Hole Diameter 14.0", 355.5 mm [ Front Sealing Gasket fitted as standard [ Rear Sealing Gasket fitted as standard [ Mounting Holes Diameter 0.28", 7.1 mm Mounting Holes B.C.D. 14.56", 369.9 mm [ Depth 6.57", 167 mm [ Copper voice coil [ Polyimide former [ Ferrite magnet [ Vented and extended core [ Die-cast aluminum basket [ Paper Cone [ Cloth cone edge [ Solid composition paper dust cap
