NEW! MODELED AFTER THE VINTAGE 70'S SVT SPEAKERKS, THE B810 IS RATED 150W AT 32 OHMS. USE AS UPGRADE FOR YOUR VINTAGE CABS AND AS DIRECT REPLACEMENT FOR THE MODERN CABS. Use as replacement 86-032-01 (810E and 410HE) Nominal Basket Diameter 10", 254mm Nominal Impedance* 32 ohms Power Rating Watts 150W Music Program 300W Resonance 52Hz Usable Frequency Range 49Hz-5.1kHz Sensitivity*** 92.7 Magnet Weight 30 oz. Gap Height 0.312", 7.94mm Voice Coil Diameter 2", 50.8mm THIELE & SMALL PARAMETERS Resonant Frequency (fs) 52.07Hz DC Resistance (Re) 27.5 Coil Inductance (Le) 2.72mH Download PDF Spec Sheet Mechanical Q (Qms) 13.91 Electromagnetic Q (Qes) 0.68 Total Q (Qts) 0.65 Compliance Equivalent Volume (Vas) 66.4 liters / 2.34 cu.ft. Mechanical Compliance of Suspension (Cms) 0.39mm/N BL Product (BL) 17.8 T-M Diaphram Mass inc. Airload (Mms) 23.8 grams Efficiency Bandwidth Product (EBP) 76.8 Maximum Linear Excursion (Xmax) 4.7mm Surface Area of Cone (Sd) 350.1 cm2 Maximum Mechanical Limit (Xlim) 9.5mm MOUNTING INFORMATION Recommended Enclosure Sealed 14-35 liters / 0.5-1.3 cu.ft. Vented 45.76 liters / 1.6-2.7 cu.ft. Overall Diameter 10.11", 256.8mm Baffle Hole Diameter 9.13", 231.9mm Front Sealing Gasket Fitted as standard Rear Sealing Gasket Fitted as standard Mounting Holes Diameter 0.23", 5.7mm Mounting Holes B.C. D. 9.60", 243.8mm Depth 4.08", 103.6mm Net Weight 6.7 lbs, 3.04 kg Shipping Weight 7.9 lbs, 3.6 kg