B&C Speakers Woofer 12 NW 76 Specification

12NW76
Woofer
1000 W continuous program power capacity
76 mm (3 in) copper voice coil
Neodymium ring magnet assembly
Aluminium demodulating ring allows a very low distortion figure
Ventilated voice coil gap for reduced power compression
40 – 2000 Hz response
98.5 dB sensitivity
Specification
Nominal Diameter 320 (12) mm (in)
Nominal Impedance (1)
Minimum Impedence
Nominal Power Handling (2)
Continuous Power Handling (3)
Sensitivity (1W/1m) (4)
Frequency Range
Voice Coil Diameter 76 (3) mm (in)
Winding Material
Former Material
Winding Depth 19 (3/4) mm (in)
Magnetic Gap Depth 11 (7/16) mm (in)
Flux Density
Thiele & Small Parameters
Fs
Re
Qes
Qms
Qts
Vas 76 (2.7) dm3 (ft3)
Sd 522 (80.9) cm2 (in2)
Eta Zero
Xmax
Xvar
Mms
Bl
Le
Mounting and Shipping Info
Overall Diameter 315 mm (12.4 in)
Bolt Circle Diameter 298 mm (11.7 in)
Baffle Cutout Diameter 283 mm (11.1 in)
Depth 147 mm (5.8 in)
Flange and Gasket Thickness 14 mm (0.55 in)
Net Weight 4.9 kg (10.8 lb)
Shipping Weight 5.6 kg (12.3 lb)
Shipping Box 340x340x170 mm
(13.4x13.4x6.7 in)
1 For different impedances, please ask.
2 2 hours test made with continuous pink noise signal (6 dB crest factor).
Power calculated on rated minimum impedance.
3 Power on Continuous Program is defined as 3 dB greater than the
Nominal rating.
4 Applied RMS Voltage is set to 2.83V for 8 ohms or 2.0V for 4 ohms
Nominal Impedance
8 Ohm
6.9 Ohm
500 W
1000 W
98.5 dB
40 -2000 Hz
Copper
Glass Fibre
1.3 T
40 Hz
5.3 Ohm
0.17
3.7
0.16
2.8 %
+/- 8 mm
+/- 10 mm
77 g
25.5 Txm
1.25 mH