Detailed Product Description

Specification
Nominal Diameter:   320 (12) mm (in)
Nominal Impedance (1):   8 Ohm
Minimum Impedence:   6.7 Ohm
Nominal Power Handling (2):   250 W
Continuous Power Handling (3):  500 W
Sensitivity (1W/1m) (4):  101.5 dB
Frequency Range:   50 - 4000 Hz
Voice Coil Diameter:   65 (2.5) mm (in)
Winding Material:   Aluminium
Former Material:  Glass Fibre
Winding Depth:   12 (1/2) mm (in)
Magnetic Gap Depth:   7 (9/32) mm (in)
Flux Density:  1.4 T
Thiele & Small Parameters
Fs:   51 Hz
Re:   5.8 Ohm
Qes:   0.19
Qms:   7.6
Qts:   0.18
Vas:   101 (3.56) dm3 (ft3)
Sd:   522 (80.9) cm2 (in2)
Eta Zero 6.8 %
Xmax:   +/- 2.8 mm
Xvar:   +/- 5 mm
Mms:   37 g
Bl:   19.1 Txm
Le:   1.2 mH

Mounting and Shipping Info

Overall Diameter:   316 mm (12.4 in)
Bolt Circle Diameter:   296 mm (11.6 in)
Baffle Cutout Diameter:   282 mm (11.1 in)
Depth:  135 mm (5.3 in)
Flange and Gasket Thickness:   16 mm (5/8 in)
Net Weight:   7.6 kg (16.7 lb)
Shipping Weight:   8.4 kg (18.7 lb)
Shipping Box:   380x380x180 mm
                      (15x15x6.7 in)