Recommended for professional audio as a mid/hi or full-range and monitor- also for bass guitar. Works well in sealed or vented enclosures.
SPECIFICATION Nominal Basket Diameter 12", 304.8 mm Nominal Impedance 4 ohms Power Rating Watts 250 W / Music Program 500 W Resonance 37 Hz Usable Frequency Range 48 Hz - 4 kHz Sensitivity 99.9 Magnet Weight 7 oz Gap Height 0.275", 7 mm Voice Coil Diameter 2.5", 63.5 mm
THIELE & Small Parameters Resonant Frequency (fs) 37Hz DC Resistance (Re) 5.04 Coil Inductance (Le) 0.46 mH Mechanical Q (Qms) 3.13 Electromagnetic Q (Qes) 0.44 Total Q (Qts) 0.39 Compliance Equivalent Volume (Vas) 147 liters / 5.2 cu. ft. Peak Diaphragm Displacement Volume 255 cc Mechanical Compliance of Suspension (Cms) 0.38 mm/N BL Product (BL) 11.3 T-M Diaphragm Mass inc. Airload (Mms) 49 grams Efficiency Bandwidth Product (EBP) 84 Maximum Linear Excursion (Xmax) 4.9 mm Surface Area of Cone (Sd) 519.5 cm? Maximum Mechanical Limit (Xlim) 8.5 mm
MOUNTING Information Recommended Enclosure Volume Sealed 23-28 liters/0.8-1 cu. ft. Vented 33-85 liters/1.2-3 cu. ft. Overall Diameter 12.38", 314.5 mm Baffle Hole Diameter 11.06", 280.9 mm Front Sealing Gasket fitted as standard Rear Sealing Gasket fitted as standard Mounting Holes Diameter 0.28", 7 mm Mounting Holes B.C.D. 11.62", 295.1 mm Depth 6.06", 154 mm
MATERIALS of Construction Aluminum voice coil Polyimide former Neodymium magnet Vented core Die-cast aluminum basket/ heatsink Paper Cone Cloth cone edge Solid composition paper dust cap
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