Power Rating Watts 120W Music Program Resonance 102Hz Usable frequency Range 70Hz-5.5kHz Sensitivity 101.6 Magnet Weight 38 oz. Gap Height 0.312 Inch , 7.92mm Voice Coil Diameter 1.75 Inch , 44.5mm Sound Clips Thiele and Small Parameter Clean Heavy OD Resonant frequency (FS) 102Hz DC Resistance (Re) 13.1 Coil Inductance (Le) 0.74mH Download PDF Spec Sheet Mechanical Q (QMS) 12.39 Electromagnetic Q (QES) 0.97 Total Q (QTS) 0.85 Compliance Equivalent Volume (Vas) 31.5 liters/1.1 cu.ft. Mechanical Compliance of Suspension (CMS) 0.08mm/N BL Product (BL) 16.5 T-M Diaphragm Mass Inc. Air load (Mms) 30 grams Efficiency Bandwidth Product (EBP) 105 Maximum Linear Excursion (XMAX) 0.8mm Surface Area of Cone (SD) 519.5 cm2 Maximum Mechanical Limit (XLIM) MOUNTING INFORMATION Recommended Enclosure Sealed Acceptable Vented Acceptable Overall Diameter 12.02 Inch , 305.3mm Baffle Hole Diameter 10.97 Inch , 278.6mm Front Sealing Gasket fitted as standard Rear Sealing Gasket fitted as standard Mounting Holes Diameter 0.25 Inch , 6.4mm Mounting Holes B.C. D. 11.63 Inch , 295.4mm Depth 5.2 Inch , 132mm Net Weight 8.1 lbs., 3.7 kg Shipping Weight 9.9 lbs., 4.5 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