B&C 8NW51

8NW51

• Specifications
  • Nominal diameter
    200 mm (8.0 in)
  • Nominal impedance
    8 Ω
  • Minimum impedance
    7.7 Ω
  • 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
  • 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
    5.2 Ω
  • Qes
    0.19
  • Qms
    2.7
  • Qts
    0.17
  • Vas
    11.0 dm³ (0.4 ft³)
  • Sd
    220.0 cm² (34.1 in²)
  • η₀
    2.4 %
  • Xmax
    6.0 mm
  • Xvar
    6.0 mm
  • Mms
    28 g
  • Bl
    18.9 Txm
  • Le
    0.4 mH
  • EBP
    389 Hz
• Mounting And Shipping Info
  • 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)
• Service Kit
  •  
    RCK008NW518

• Alternative Magnet
  • 8FW51