DS18 Black Diamond DIA-CARBON12.2D

2x1Ω
2x2Ω

Subwoofer

Nominal diameter12″ / 326 mm
Resonance40 Hz
Q factor0.75
Sensitivity81.5 dB
Linear excursion± 22.5 mm
Program Power7000 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

Specifications

  • Sensitivity (1W, 1m, infinite baffle) SPL1W 81.5dB
  • Frequency response 10 - 200Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 40Hz
  • Mechanical quality factor QMS 4.93
  • Electrical quality factor QES 0.89
  • Total quality factor QTS 0.75

Large signal parameters

  • Maximum linear excursion (one way) xmax 22.5mm
  • Air volume displaced at xmax VD 1061cm³
  • Power handling P 3500W
  • Program power Pmax 7000W

Voice Coil

  • Nominal impedance Z 2 x 2Ω
  • DC resistance (in series) RE 4.0Ω
  • Inductance (1kHz, in series) LE 1.86mH
  • VC Diameter 89mm
  • Winding material CCAR
  • Former material Aluminum

Magnet

  • Force factor (in series) Bl 23N/A
  • Motor constant Bl/√RE 11.5N/√W
  • Diameter 230mm
  • Weight 12.05kg
  • Material Ferrite

Diaphragm

  • Effective diameter 245mm
  • Effective area SD 471cm²
  • Moving mass MMS 468g
  • Moving mass (without air load) MMD 460g
  • Material Carbon Fiber

Suspensions

  • Stiffness KMS 29.9N/mm
  • Compliance CMS 33.5µm/N
  • Equivalent volume to the compliance VAS 10.6L
  • Mechanical resistance RMS 23.9N·s/m
  • Surround material Foam

Dimensions

  • Nominal diameter 12
  • 326mm
  • Overall diameter 326mm
  • Baffle cutout diameter 283mm
  • Overall depth 296mm
  • Flange thickness 48mm
  • Mounting depth 248mm
  • Volume occupied by the driver (estimated) 6.8L
  • Frame material Aluminium

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