STX W.25.400.2x2.MC

2x2Ω
2x4Ω

Subwoofer

Nominal diameter10″ / 250 mm
Resonance33 Hz
Q factor0.33
Sensitivity86.9 dB
Linear excursion± 7.5 mm
Program power400 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 86.9dB
  • Frequency response 30 - 500Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 33Hz
  • Mechanical quality factor QMS 3.60
  • Electrical quality factor QES 0.36
  • Total quality factor QTS 0.33

Large signal parameters

  • Maximum linear excursion (one way) xmax 7.5mm
  • Maximum excursion before damage xlim 18mm
  • Air volume displaced at xmax VD 236cm³
  • Power handling P 300W
  • Program power Pmax 400W

Voice Coil

  • Nominal impedance Z 2 x 2Ω
  • DC resistance (in series) RE 3.6Ω
  • Inductance (1kHz, in series) LE 2.11mH
  • VC Diameter 50mm
  • Winding material Drut termospiekalny miedziany
  • Former material Aluminium

Magnet

  • Force factor (in series) Bl 14N/A
  • Motor constant Bl/√RE 7.38N/√W
  • Material Ferryt

Diaphragm

  • Effective diameter 200mm
  • Effective area SD 315cm²
  • Moving mass (including air load) MMS 96g
  • Moving mass MMD 91.8g
  • Material Modyfikowana celuloza

Suspensions

  • Stiffness KMS 4.17N/mm
  • Compliance CMS 240µm/N
  • Equivalent volume to the compliance VAS 34L
  • Mechanical resistance RMS 5.53N·s/m

Dimensions

  • Nominal diameter 10
  • 250mm
  • Overall diameter 256mm
  • Baffle cutout diameter 234mm
  • Overall depth 116mm
  • Volume occupied by the driver (estimated) 1.5L
  • Net weight 3.8kg
  • Frame material Stal
STX W.25.400.2x2.MC SPL
STX W.25.400.2x2.MC Dimensions

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