STX W.30.750.8.MCX

Woofer

Nominal diameter12″ / 300 mm
Resonance47 Hz
Q factor0.37
Sensitivity93.7 dB
Linear excursion± 6 mm
Program power750 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 93.7dB
  • Frequency response 50 - 5000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 47Hz
  • Mechanical quality factor QMS 3.30
  • Electrical quality factor QES 0.42
  • Total quality factor QTS 0.37

Large signal parameters

  • Maximum linear excursion (one way) xmax 6mm
  • Maximum excursion before damage xlim 17.5mm
  • Air volume displaced at xmax VD 306cm³
  • Power handling P 400W
  • Program power Pmax 750W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.0Ω
  • Inductance (1kHz) LE 0.28mH
  • VC Diameter 75mm
  • Winding material Copper
  • Former material Aluminium

Magnet

  • Force factor Bl 16.2N/A
  • Motor constant Bl/√RE 7.24N/√W
  • Material Ferrite

Diaphragm

  • Effective diameter 255mm
  • Effective area SD 510cm²
  • Moving mass (including air load) MMS 74.5g
  • Moving mass MMD 66.1g
  • Material Modified cellulose

Suspensions

  • Stiffness KMS 6.67N/mm
  • Compliance CMS 150µm/N
  • Equivalent volume to the compliance VAS 57L
  • Mechanical resistance RMS 6.67N·s/m

Dimensions

  • Nominal diameter 12
  • 300mm
  • Overall diameter 314mm
  • Baffle cutout diameter 282mm
  • Overall depth 142mm
  • Volume occupied by the driver (estimated) 2.8L
  • Net weight 6.5kg
  • Frame material Steel
STX W.30.750.8.MCX SPL
STX W.30.750.8.MCX Dimensions

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