STX M.15.250.8.FCX

Mid-range

Nominal diameter6″ / 150 mm
Resonance58 Hz
Q factor0.30
Sensitivity88.6 dB
Linear excursion± 2.3 mm
Program power250 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 88.6dB
  • Frequency response 100 - 10000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 58Hz
  • Mechanical quality factor QMS 3.30
  • Electrical quality factor QES 0.33
  • Total quality factor QTS 0.30

Large signal parameters

  • Maximum linear excursion (one way) xmax 2.3mm
  • Maximum excursion before damage xlim 9mm
  • Air volume displaced at xmax VD 21cm³
  • Power handling P 80W
  • Program power Pmax 250W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.8Ω
  • Inductance (1kHz) LE 0.28mH
  • VC Diameter 25mm
  • Winding material Copper
  • Former material Kapton

Magnet

  • Force factor Bl 8.9N/A
  • Motor constant Bl/√RE 3.7N/√W
  • Material Ferrite

Diaphragm

  • Effective diameter 110mm
  • Effective area SD 95cm²
  • Moving mass (including air load) MMS 12g
  • Moving mass MMD 11.3g
  • Material Carbon fiber

Suspensions

  • Stiffness KMS 1.64N/mm
  • Compliance CMS 610µm/N
  • Equivalent volume to the compliance VAS 7.7L
  • Mechanical resistance RMS 1.33N·s/m

Dimensions

  • Nominal diameter 6
  • 150mm
  • Overall diameter 157mm
  • Baffle cutout diameter 122mm
  • Overall depth 81mm
  • Volume occupied by the driver (estimated) 0.46L
  • Net weight 1.4kg
  • Frame material Aluminium
STX M.15.250.8.FCX SPL
STX M.15.250.8.FCX Dimensions

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