D.A.S. Audio 18G

Low frequency

Nominal diameter18″ / 457 mm
Resonance32 Hz
Q factor0.30
Sensitivity96.6 dB
Linear excursion± 6 mm
Program Power1400 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 96.6dB
  • Frequency response 30 - 2000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 32Hz
  • Mechanical quality factor QMS 6.41
  • Electrical quality factor QES 0.31
  • Total quality factor QTS 0.30

Large signal parameters

  • Maximum linear excursion xmax 6mm
  • Maximum excursion before damage xlim 12mm
  • Air volume displaced at xmax VD 698cm³
  • Power handling P 700W
  • Program power Pmax 1400W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 6.2Ω
  • Inductance (1kHz, estimated) LE 3.69mH
  • VC Diameter 102mm
  • Winding height HVC 16mm
  • Winding material Copper
  • Former material Glass Fibre Reinforced Polymer

Magnet

  • Force factor Bl 23.7N/A
  • Motor constant Bl/√RE 9.52N/√W
  • Air gap height HAG 8mm
  • Material Ferrite

Diaphragm

  • Effective diameter 385mm
  • Effective area SD 1164cm²
  • Moving mass MMS 140g
  • Moving mass (without air load) MMD 112g

Suspensions

  • Stiffness KMS 5.62N/mm
  • Compliance CMS 178µm/N
  • Equivalent volume to the compliance VAS 342L
  • Mechanical resistance RMS 4.39N·s/m
  • Surround material Polycotton
  • Spider material Polycotton

Dimensions

  • Nominal diameter 18
  • 457mm
  • Baffle cutout diameter 415mm
  • Volume occupied by the driver (estimated) 6.9L
  • Frame material Injected Aluminum
D.A.S. Audio 18G Impedance
D.A.S. Audio 18G SPL
D.A.S. Audio 18G Distortion


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