B&C Speaker 18SW115

Subwoofer

Nominal diameter18″ / 460 mm
Resonance32 Hz
Q factor0.30
Sensitivity94.1 dB
Linear excursion± 14 mm
Program Power3400 W
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
  • Sensitivity (1W, 1m, infinite baffle) SPL1W 94.1dB
  • Frequency response 35 - 1500Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 32Hz
  • Mechanical quality factor QMS 5.60
  • Electrical quality factor QES 0.32
  • Total quality factor QTS 0.30

Large signal parameters

  • Maximum linear excursion xmax 14mm
  • Air volume displaced at xmax VD 1694cm³
  • Power handling P 1700W
  • Program power Pmax 3400W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.3Ω
  • Inductance (1kHz) LE 1.9mH
  • VC Diameter 116mm
  • Winding height HVC 34mm
  • Winding material Copper
  • Former material Glass Fibre

Magnet

  • Flux density B 1.16T
  • Force factor Bl 30.3N/A
  • Motor constant Bl/√RE 13.2N/√W
  • Air gap height HAG 14mm
  • Material Neodymium Inside Slug

Diaphragm

  • Effective diameter 393mm
  • Effective area SD 1210cm²
  • Moving mass MMS 275g
  • Moving mass (without air load) MMD 246g
  • Material Waterproof Both Sides

Suspensions

  • Stiffness KMS 11.1N/mm
  • Compliance CMS 90µm/N
  • Equivalent volume to the compliance VAS 187L
  • Mechanical resistance RMS 9.87N·s/m
  • Spider material Silicone

Dimensions

  • Nominal diameter 18
  • 460mm
  • Overall diameter 460mm
  • Baffle cutout diameter 422mm
  • Overall depth 242mm
  • Flange thickness 16mm
  • Mounting depth 226mm
  • Volume occupied by the driver 10.5L
  • Net weight 11.9kg
B&C Speaker 18SW115 Impedance
B&C Speaker 18SW115 SPL
B&C Speaker 18SW115 Dimensions

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