STX W.27.500.8.FCX

Subwoofer

Nominal diameter10″ / 270 mm
Resonance25 Hz
Q factor0.35
Sensitivity85.4 dB
Linear excursion± 13.5 mm
Program power500 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 85.4dB
  • Frequency response 25 - 500Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 25Hz
  • Mechanical quality factor QMS 3.61
  • Electrical quality factor QES 0.39
  • Total quality factor QTS 0.35

Large signal parameters

  • Maximum linear excursion (one way) xmax 13.5mm
  • Maximum excursion before damage xlim 24mm
  • Air volume displaced at xmax VD 473cm³
  • Power handling P 300W
  • Program power Pmax 500W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.2Ω
  • Inductance (1kHz) LE 1.37mH
  • VC Diameter 50mm
  • Winding material Copper
  • Former material Fiberglass / Aluminum

Magnet

  • Force factor Bl 15.8N/A
  • Motor constant Bl/√RE 6.93N/√W
  • Material Ferrite

Diaphragm

  • Effective diameter 211mm
  • Effective area SD 350cm²
  • Moving mass (including air load) MMS 120g
  • Moving mass MMD 115g
  • Material Carbon fiber

Suspensions

  • Stiffness KMS 2.94N/mm
  • Compliance CMS 340µm/N
  • Equivalent volume to the compliance VAS 59L
  • Mechanical resistance RMS 5.22N·s/m

Dimensions

  • Nominal diameter 10
  • 270mm
  • Overall diameter 260mm
  • Baffle cutout diameter 236mm
  • Overall depth 133mm
  • Volume occupied by the driver (estimated) 2.1L
  • Net weight 5.5kg
  • Frame material Aluminium
STX W.27.500.8.FCX SPL
STX W.27.500.8.FCX Dimensions

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