Specification:
Nominal Basket Diameter 15", 381mm
Nominal Impedance* 8 ohms
Power Rating**
Watts 800W
Music Program 1600W
Resonance 33Hz
Usable Frequency Range 51Hz - 1.7kHz
Sensitivity*** 97.3dB
Magnet Weight 109 oz.
Gap Height 0.37", 9.53mm
Voice Coil Diameter 4", 101.6mm

Thiele & Small Parameters
Resonant Frequency (fs) 33Hz
DC Resistance (Re) 5.28
Coil Inductance (Le) 1.04mH
Mechanical Q (Qms) 5.69
Electromagnetic Q (Qes) 0.33
Total Q (Qts) 0.32
Compliance Equivalent Volume (Vas) 258.5 liters / 9.1 cu.ft.
Peak Diaphragm Displacement Volume (Vd) 411cc
Mechanical Compliance of Suspension (Cms) 0.25mm/N
BL Product (BL) 17.5 T-M
Diaphragm Mass Inc. Airload (MMs) 94 grams
Efficiency Bandwidth Product (EBP) 99
Maximum Linear Excursion (Xmax) 4.8mm
Surface Area of Cone (Sd) 856.3 cm2
Maximum Mechanical Limit (Xlim) 12.2mm

Mounting Information
Recommended Enclosure Volume
Sealed N/a
Vented 57-108 liters / 2-3.8 cu.ft.
Driver Volume Displaced 262.8 cu.in. / 4.31 liters
Overall Diameter 15.21", 386.4mm
Baffle Hole Diameter 14", 355.6mm
Front Sealing Gasket Fitted as standard
Rear Sealing Gasket Fitted as standard
Mounting Holes Diameter 0.28", 7.1mm
Mounting Holes B.C.D. 14.56", 369.9mm
Depth 6.35", 161mm
Net Weight 22.7 lbs, 10.3 kg
Shipping Weight 25.2 lbs, 11.4 kgs

Materials of Construction
Coil Construction Copper voice coil
Coil Former Polyimide former
Magnet Composition Ferrite magnet
Core Details Vented and extended core

Basket Materials Die-cast aluminum basket
Cone Composition Paper Cone
Cone Edge Composition Cloth cone edge
Dust Cap Composition Solid composition paper dust cap