B&C Speaker 8NW51

4Ω
8Ω
16Ω

Woofer

Nominal diameter8″ / 200 mm
Resonance74 Hz
Q factor0.17
Sensitivity95.5 dB
Linear excursion± 6 mm
Program Power400 W
B&C Speaker 8NW51 WooferB&C Speaker 8NW51 WooferB&C Speaker 8NW51 Woofer
Impedance
Excursion
Velocity
SPL
Phase
Group delay
Step response
Tone Burst
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Discard
Apply

Specifications

  • Sensitivity (1W, 1m, infinite baffle) SPL1W 95.5dB
  • Frequency response 70 - 3000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 74Hz
  • Mechanical quality factor QMS 2.70
  • Electrical quality factor QES 0.19
  • Total quality factor QTS 0.17

Large signal parameters

  • Maximum linear excursion (one way) xmax 6mm
  • Air volume displaced at xmax VD 132cm³
  • Power handling P 200W
  • Program power Pmax 400W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.2Ω
  • Inductance (1kHz) LE 0.4mH
  • VC Diameter 51mm
  • Winding height HVC 19mm
  • Winding material Copper
  • Former material Glass Fibre

Magnet

  • Flux density B 1.3T
  • Force factor Bl 18.9N/A
  • Motor constant Bl/√RE 8.29N/√W
  • Air gap height HAG 10mm
  • Material Neodymium Ring

Diaphragm

  • Effective diameter 167mm
  • Effective area SD 220cm²
  • Moving mass MMS 28g
  • Moving mass (without air load) MMD 25.5g
  • Material Waterproof Both Sides

Suspensions

  • Stiffness KMS 6.06N/mm
  • Compliance CMS 165µm/N
  • Equivalent volume to the compliance VAS 11L
  • Mechanical resistance RMS 4.82N·s/m

Dimensions

  • Nominal diameter 8″
  • 200mm
  • Overall diameter 225mm
  • Baffle cutout diameter 187mm
  • Overall depth 100mm
  • Flange thickness 11mm
  • Mounting depth 89mm
  • Volume occupied by the driver 1.1L
  • Net weight 3.05kg
Impedance
SPL
B&C Speaker 8NW51 Impedance
B&C Speaker 8NW51 SPL
B&C Speaker 8NW51 Dimensions
PDF fileDatasheet

Export this driver to a simulation software:

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