Detailed Product Description

Specification
Nominal Diameter:   250 (10) mm (in)
Nominal Impedance (1):   8 Ohm
Minimum Impedence:  7 Ohm
Nominal Power Handling (2):  250 W
Continuous Power Handling (3):   500 W
Sensitivity (1W/1m) (4):  97 dB
Frequency Range:   50 - 3000 Hz
Voice Coil Diameter:   64 (2.5) mm (in)
Winding Material:  Aluminium
Former Material:  Glass Fibre
Winding Depth:    14 (0.55) mm (in)
Magnetic Gap Depth:   8 (5/16) mm (in)
Flux Density:  1.25 T

Thiele & Small Parameters

Fs:   56 Hz
Re:   5.7 Ohm
Qes:  0.29
Qms:   3.4
Qts:   0.26
Vas:   31 (1.1) dm3 (ft3)
Sd:   320 (50) cm2 (in2)
Eta Zero:   1.8 %
Xmax:   +/- 6 mm
Xvar:   +/- 7 mm
Mms:   37 g
Bl:   16.2 Txm
Le:    0.9 mH

Mounting and Shipping Info
Overall Diameter:    261 mm (10.3 in)
Bolt Circle Diameter:    245 mm (9.6 in)
Baffle Cutout Diameter:    230 mm (8.8 in)
Depth:   113 mm (4.4 in)
Flange and Gasket Thickness:   13 mm (0.5 in)
Net Weight:    2.9 kg (6.4 lb)
Shipping Weight:   3.5 kg (7.7 lb)
Shipping Box:   330x330x160 mm
                       (13x13x6.3 in)