Power Rating Watts 150W Music Program Resonance 113Hz Usable Frequency Range 70Hz-5kHz Sensitivity 102 Magnet Weight 59 ounce Gap Height 0.312", 7.92mm Voice Coil Diameter 2", 50.8mm THIELE and SMALL PARAMETERS Resonant Frequency (FS) 113Hz DC Resistance (Re) 14.7 Coil Inductance (Le) 0.67mH Mechanical Q (QMS) 8.60 Electromagnetic Q (QES) 0.67 Total Q (QTS) 0.62 Compliance Equivalent Volume (Vas) 26.4 liters / 0.9 cu.ft. Mechanical Compliance of Suspension (CMS) 0.07mm/N BL Product (BL) 21.8 T-M Diaphragm Mass Inc. Air load (Mms) 30 grams Efficiency Bandwidth Product (EBP) 168 Maximum Linear Excursion (XMAX) 0.8mm Surface Area of Cone (SD) 532.4 cm2 Maximum Mechanical Limit (XLIM) MOUNTING INFORMATION Recommended Enclosure Sealed Acceptable Vented Acceptable Overall Diameter 12.01", 305.1mm Baffle Hole Diameter 10.95", 278.1mm Front Sealing Gasket fitted as standard Rear Sealing Gasket fitted as standard Mounting Holes Diameter 0.25", 6.4mm Mounting Holes B.C. D. 11.63", 295.4mm Depth 5.2", 132mm Net Weight 11.1 lbs., 5 kg Shipping Weight 12.8 lbs., 5.8 kg MATERIALS OF CONSTRUCTION Coil Construction Copper voice coil Former Polyimide former Magnet Composition Ferrite magnet Core Details Non-vented core Basket Materials Pressed steel basket Cone Composition Paper Cone Edge Composition Paper cone edge Dust cap Composition Zurette dust cap