KILOMAX PRO-18A 18" Professional Series Speaker

Recommended for professional audio subwoofer and woofer applications in sealed and vented enclosures. Not for horn-loading or scoops. Applications  Subwoofer | Woofer | Pro Audio Box Type: Sealed | Vented SpecificationsDownload Spec Sheet Download Cab Design SPECIFICATION Nominal Basket Diameter 18", 457 mm Nominal Impedance* 8 Ω Power Rating* Program Power 2500 W Watts 1250 W Resonance 32 Hz Usable Frequency Range 33 Hz - 0.3 kHz Sensitivity* 95.8 dB Magnet Weight 109 oz. Gap Height 0.375", 9.5 mm Voice Coil Diameter 4", 102 mm THIELE & SMALL PARAMETERS Resonant Frequency (fs) 32 Hz DC Resistance (Re) 5.07 Ω Coil Inductance (Le) 1.59m H Mechanical Q (Qms) 10.15 Electromagnetic Q (Qes) 0.49 Total Q (Qts) 0.47 Compliance Equivalent Volume (Vas) 331.5 liters / 11.71 cu.ft. Peak Diaphragm Displacement Volume (Vd) 1159 cc Mechanical Compliance of Suspension (Cms) 0.18 mm/N BL Product (BL) 17.2 T-M Diaphragm Mass Inc. Airload (MMs) 143 grams Efficiency Bandwidth Product (EBP) 65 Maximum Linear Excursion (Xmax) 10 mm Surface Area of Cone (Sd) 1159 cm2 Maximum Mechanical Limit (Xlim) 19.2 mm MOUNTING INFORMATION Recommended Enclosure Volume Sealed 104.8-172.7 liters / 3.7-6.1 cu.ft. Vented 118.9-303 liters / 4.2-10.7 cu.ft. Driver Volume Displaced 0.234 cu.ft. / 6.62 liters Overall Diameter 18", 457.2 mm Baffle Hole Diameter 16.56", 420.6 mm Front Sealing Gasket Yes Rear Sealing Gasket Yes Mounting Holes Diameter 0.28", 7.1mm Mounting Holes B.C.D. 17.25", 438.2mm Depth 8.15", 207 mm Net Weight 27.4 lbs, 12.43 kg Shipping Weight 30.9 lbs, 14.02 kgs MATERIALS OF CONSTRUCTION Coil Construction Copper voice coil Coil Former Kapton former Magnet Composition Ferrite magnet Core Details Extended core with Core Periphery Ventilation     Basket Materials Die-cast aluminum basket Cone Composition Treated Paper-Kevlar Cone Edge Composition Cloth cone edge Dust Cap Composition Porous cloth top spider/ heatsink Frequency Response