B&C 8BG51

8BG51

• Specifications
  • Nominal diameter
    200 mm (8.0 in)
  • Nominal impedance
    8 Ω
  • Minimum impedance
    6.0 Ω
  • Nominal power handling *
    250 W
  • Continuous power handling *
    500 W
  • Sensitivity (1W/1m) *
    92.0 dB
  • Frequency range
    50 - 4000 Hz
  • Voice coil diameter
    51 mm (2.0 in)
  • Winding material
    Copper
  • Former material
    Glass Fibre
  • Winding depth
    17 mm (0.65 in)
  • Magnetic gap depth
    8 mm (0.31 in)
  • Flux density
    1.15 T
• Design
  • Surround shape
    Roll
  • Cone shape
    Exponential
  • Magnet material
    Neodymium Inside Slug
  • Spider
    Single
  • Pole design
    T-Pole
  • Woofer cone treatment
    WP Waterproof Front Side
  • Recommended enclosure
    19.0 dm³ (0.67 ft³)
  • Recommended tuning
    49 Hz
• Parameters *
  • Fs
    52 Hz
  • Re
    5.1 Ω
  • Qes
    0.42
  • Qms
    12.3
  • Qts
    0.4
  • Vas
    18.0 dm³ (0.63 ft³)
  • Sd
    220.0 cm² (34.1 in²)
  • η₀
    0.6 %
  • Xmax
    6.5 mm
  • Xvar
    8.0 mm
  • Mms
    35 g
  • Bl
    11.8 Txm
  • Le
    0.5 mH
  • EBP
    123 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
    90 mm (3.5 in)
  • Flange and gasket thickness
    11 mm (0.43 in)
  • Air volume occupied by driver
    1.1 dm³ (0.04 ft³)
  • Net weight
    1.8 kg (4.0 lb)
  • Shipping units
    1
  • Shipping weight
    2.2 kg (4.8 lb)
  • Shipping box
    300x160x180 mm (11.8x6.3x7.1 in)
• Service Kit
  •  
    RCK008BG518

• Alternative Magnet
  • 8FG51