B&C Speaker 18DS115

Subwoofer

Nominal diameter18″ / 460 mm
Resonance30 Hz
Q factor0.20
Sensitivity94.8 dB
Linear excursion± 16.5 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 94.8dB
  • Frequency response 30 - 500Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 30Hz
  • Mechanical quality factor QMS 4.30
  • Electrical quality factor QES 0.21
  • Total quality factor QTS 0.20

Large signal parameters

  • Maximum linear excursion xmax 16.5mm
  • Air volume displaced at xmax VD 1997cm³
  • Power handling P 1700W
  • Program power Pmax 3400W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.0Ω
  • Inductance (1kHz) LE 3.85mH
  • VC Diameter 116mm
  • Winding height HVC 40mm
  • Winding material Aluminium
  • Former material Glass Fibre

Magnet

  • Flux density B 0.8T
  • Force factor Bl 39N/A
  • Motor constant Bl/√RE 17.4N/√W
  • Air gap height HAG 14mm
  • Material Neodymium Inside Slug

Diaphragm

  • Effective diameter 393mm
  • Effective area SD 1210cm²
  • Moving mass MMS 330g
  • Moving mass (without air load) MMD 301g
  • Material Waterproof Both Sides

Suspensions

  • Stiffness KMS 12N/mm
  • Compliance CMS 83µm/N
  • Equivalent volume to the compliance VAS 168L
  • Mechanical resistance RMS 14.5N·s/m
  • Spider material Silicone

Dimensions

  • Nominal diameter 18
  • 460mm
  • Overall diameter 460mm
  • Baffle cutout diameter 422mm
  • Overall depth 248mm
  • Flange thickness 16mm
  • Mounting depth 232mm
  • Volume occupied by the driver 10L
  • Net weight 12.55kg
B&C Speaker 18DS115 Impedance
B&C Speaker 18DS115 SPL
B&C Speaker 18DS115 Dimensions

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