STX W.32.500.8.MC_v2

Woofer

Nominal diameter12″ / 320 mm
Resonance24 Hz
Q factor0.27
Sensitivity90.9 dB
Linear excursion± 7.5 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 90.9dB
  • Frequency response 25 - 3000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 24Hz
  • Mechanical quality factor QMS 2.48
  • Electrical quality factor QES 0.30
  • Total quality factor QTS 0.27

Large signal parameters

  • Maximum linear excursion (one way) xmax 7.5mm
  • Maximum excursion before damage xlim 20mm
  • Air volume displaced at xmax VD 368cm³
  • Power handling P 300W
  • Program power Pmax 500W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.6Ω
  • Inductance (1kHz) LE 1.27mH
  • VC Diameter 50mm
  • Winding material Copper
  • Former material Aluminium

Magnet

  • Force factor Bl 14.5N/A
  • Motor constant Bl/√RE 6.13N/√W
  • Material Ferrite

Diaphragm

  • Effective diameter 250mm
  • Effective area SD 491cm²
  • Moving mass (including air load) MMS 76g
  • Moving mass MMD 67.7g
  • Material Modified cellulose

Suspensions

  • Stiffness KMS 1.7N/mm
  • Compliance CMS 590µm/N
  • Equivalent volume to the compliance VAS 199L
  • Mechanical resistance RMS 4.62N·s/m

Dimensions

  • Nominal diameter 12
  • 320mm
  • Overall diameter 332mm
  • Baffle cutout diameter 284mm
  • Overall depth 133mm
  • Volume occupied by the driver (estimated) 2L
  • Net weight 4.0kg
  • Frame material Steel
STX W.32.500.8.MC_v2 SPL
STX W.32.500.8.MC_v2 Dimensions

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