Recommended for professional audio as a mid/hi or full range in a vented enclosure.
SPECIFICATION Nminal Basket Diameter 12", 304.8 mm Nominal Impedance 8 ohms Power Rating Watts 450 W / Music Program 900 W Resonance 45 Hz Usable Frequency Range 62 Hz - 4.2 kHz Sensitivity 99.3 Magnet Weight 80 oz. Gap Height 0.375", 9.53 mm Voice Coil Diameter 3", 76.2 mm
THIELE & Small Parameters Resonant Frequency (fs) 45 Hz DC Resistance (Re) 5.41 Coil Inductance (Le) 0.77 mH Mechanical Q (Qms) 7.76 Electromagnetic Q (Qes) 0.28 Total Q (Qts) 0.27 Compliance Equivalent Volume (Vas) 112.1 liters / 4.0 cu. ft. Peak Diaphragm Displacement Volume (Vd) 166 cc Mechanical Compliance of Suspension (Cms) 0.30 mm/N BL Product (BL) 15.2 T-M Diaphragm Mass inc. Airload (Mms) 42 grams Efficiency Bandwidth Product (EBP) 161 Maximum Linear Excursion (Xmax) 3.2 mm Surface Area of Cone (Sd) 519.5 cm² Maximum Mechanical Limit (Xlim) 11.5 mm
MOUNTING Information Recommended Enclosure Volume Sealed N/A Vented 34-62 liters/1.2-2.2 cu.ft. Overall Diameter 12.26", 311.4 mm Baffle Hole Diameter 11.0", 279.5 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. 11.71", 297.5 mm Depth 5.63", 143 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