Recommended for professional audio mid-range applications in a sealed cabinet, or as a mid-bass in a vented satellite enclosure.
SPECIFICATION Nominal Basket Diameter 8", 203.2 mm Nominal Impedance 8 ohms Power Rating Watts 125 W / Music Program 250 W Resonance 73 Hz Usable Frequency Range 58 Hz - 5 kHz Sensitivity 94 Magnet Weight 20 oz. Gap Height 0.25", 6.35 mm Voice Coil Diameter 1.5", 38.1 mm
THIELE & Small Parameters Resonant Frequency (fs) 73 Hz DC Resistance (Re) 5.3 Coil Inductance (Le) 0.44 mH Mechanical Q (Qms) 4.6 Electromagnetic Q (Qes) 0.68 Total Q (Qts) 0.59 Compliance Equivalent Volume (Vas) 17.7 liters / 0.6 cu. ft. Peak Diaphragm Displacement Volume (Vd) 67 cc Mechanical Compliance of Suspension (Cms) 0.28 mm/N BL Product (BL) 7.8 T-M Diaphragm Mass inc. Airload (Mms) 17 grams Efficiency Bandwidth Product (EBP) 107 Maximum Linear Excursion (Xmax) 3.2 mm Surface Area of Cone (Sd) 210.0 cm² Maximum Mechanical Limit (Xlim) 7.1 mm
MOUNTING Information Recommended Enclosure Volume Sealed 5-7 liters / 0.18-0.25 cu. ft. Vented 16.7-25.5 liters / 0.59-0.90 cu. ft. Overall Diameter 8.24", 209.2 mm Baffle Hole Diameter 7.13", 181 mm Front Sealing Gasket fitted as standard Rear Sealing Gasket fitted as standard Mounting Holes Diameter 0.22", 5.5 mm Mounting Holes B.C.D. 7.75", 196.9 mm Depth 3.25", 83 mm
MATERIALS of Construction Copper voice coil Polyimide former Ferrite magnet Vented core Pressed steel basket Paper Cone Cloth cone edge Solid composition paper dust cap