B&C 8NW51 8" 200W 8 Ohm

Neodymium ring magnet allows a very high force factor and linear excursion
Shorting copper cap for extended HF response
Ventilated voice coil gap for reduced power compression

Specifications:

• Nominal diameter 200 mm (8.0 in)
• Nominal impedance 8 Ohms
• Minimum impedance 7.7 Ohms
• Nominal power handling * 200 W
• Continuous power handling * 400 W
• Sensitivity (1W/1m) * 97.0 dB
• Frequency range 70 - 3000 Hz
• Voice coil diameter 51 mm (2.0 in)
• Winding material Copper
• Former material Glass Fibre
• Winding depth 19 mm (0.73 in)
• Magnetic gap depth 10 mm (0.4 in)
• Flux density 1.3 T

Design Features:

• Surround shape Double Roll
• Cone shape Exponential
• Magnet material Neodymium Ring
• Spider Single
• Pole design T-Pole
• Woofer cone treatment TWP Waterproof Both Sides

Parameters:

• Fs 74 Hz
• Re 5 Ohms
• Qes 0.19
• Qms 2.7
• Qts 0.17
• Vas 11.0 dm3 (0.4 ft3)
• Sd 220.0 cm2 (34.1 in2)
• Reference efficiency 2.4 %
• Xmax 6.0 mm
• Xvar 6.0 mm
• Mms 28 g
• Bl 18.9 Txm
• Le 0.4 mH
• EBP 389 Hz

Dimensional, Mounting and Shipping Data:

• Overall diameter 225 mm (8.8 in)
• Bolt circle diameter 210 mm (8.3 in)
• Baffle cutout diameter 187.0 mm (7.4 in)
• Depth 100 mm (4.0 in)
• Flange and gasket thickness 11 mm (0.4 in)
• Air volume occupied by driver 1.1 dm3 (0.04 ft3)
• Net weight 3.0 kg (6.6 lb)
• Shipping weight 3.4 kg (7.5 lb)
• Shipping box 300x160x180 mm (11.8x6.3x7.1 in)