B&C 8NDL51 8 Inch Low Frequency Nd Driver
- 50 mm (2 in) copper voice coil
- 70 – 3000 Hz response
- 94 dB sensitivity
- Neodymium magnet allows a very light yet powerful motor assembly
- Shorting copper cap for extended HF response
- 400 W continuous program power capacity
- Ventilated voice coil gap for reduced power compression
Specification
Nominal Diameter 200 (8) mm (in)
Nominal Impedance (1) 8 Ohm
Minimum Impedance 6.6 Ohm
Nominal Power Handling (2) 200 W
Continuous Power Handling (3) 400 W
Sensitivity (1W/1m) (4) 94 dB
Frequency Range 65 -3000 Hz
Voice Coil Diameter 51 (2) mm (in)
Winding Material Copper
Former Material Kapton
Winding Depth 16.5 (0.65) mm (in)
Magnetic Gap Depth 8 (5/16) mm (in)
Flux Density 1.05 T
Thiele & Small Parameters
Fs 66 Hz
Re 5.3 Ohm
Qes 0.41
Qms 3.6
Qts 0.37
Vas 14 (0.5) dm3 (ft3)
Sd 220 (34.1) cm2 (in2)
Eta Zero 1 %
Xmax +/- 7 mm
Xvar +/- 7 mm
Mms 28 g
Bl 12.4 Txm
Le 0.5 mH
Mounting and Shipping Info
Overall Diameter 225 mm (8.8 in)
Bolt Circle Diameter 210 mm (8.3 in)
Baffle Cutout Diameter 187 mm (7.4 in)
Depth 90 mm (3.5 in)
Flange and Gasket Thickness 11 mm (0.4 in)
Net Weight 1.8 kg (4 lb)
Shipping Weight 2.2 kg (4.8 lb)
Shipping Box 300x160x180 mm
(11.8x6.3x7.1 in)
For different impedances, please ask.
2 hours test made with continuous pink noise signal (6 dB crest factor).
Power calculated on rated minimum impedance.
Power on Continuous Program is defined as 3 dB greater than the Nominal rating.
Applied RMS Voltage is set to 2.83V for 8 ohms Nominal Impedance.
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