STX W.18.200.8.FGX_v3

Mid Bass

Nominal diameter8″ / 180 mm
Resonance35 Hz
Q factor0.36
Sensitivity86.3 dB
Linear excursion± 6 mm
Program power200 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 86.3dB
  • Frequency response 40 - 8000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 35Hz
  • Mechanical quality factor QMS 2.90
  • Electrical quality factor QES 0.42
  • Total quality factor QTS 0.36

Large signal parameters

  • Maximum linear excursion (one way) xmax 6mm
  • Maximum excursion before damage xlim 12mm
  • Air volume displaced at xmax VD 80cm³
  • Power handling P 100W
  • Program power Pmax 200W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.6Ω
  • Inductance (1kHz) LE 0.39mH
  • VC Diameter 35mm
  • Winding material Copper
  • Former material Aluminum

Magnet

  • Force factor Bl 7.2N/A
  • Motor constant Bl/√RE 3.04N/√W
  • Material Ferrite

Diaphragm

  • Effective diameter 130mm
  • Effective area SD 133cm²
  • Moving mass (including air load) MMS 17.9g
  • Moving mass MMD 16.7g
  • Material Fiberglass

Suspensions

  • Stiffness KMS 0.833N/mm
  • Compliance CMS 1200µm/N
  • Equivalent volume to the compliance VAS 30L
  • Mechanical resistance RMS 1.36N·s/m

Dimensions

  • Nominal diameter 8
  • 180mm
  • Overall diameter 182mm
  • Baffle cutout diameter 146mm
  • Overall depth 80mm
  • Volume occupied by the driver (estimated) 0.6L
  • Net weight 1.8kg
  • Frame material Steel
STX W.18.200.8.FGX_v3 SPL
STX W.18.200.8.FGX_v3 Dimensions

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