STX F.30.300.8.MC

Full-range

Nominal diameter12″ / 300 mm
Resonance55 Hz
Q factor1.51
Sensitivity89.6 dB
Linear excursion± 4 mm
Program power300 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 89.6dB
  • Frequency response 50 - 15000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 55Hz
  • Mechanical quality factor QMS 2.10
  • Electrical quality factor QES 2.08
  • Total quality factor QTS 1.51

Large signal parameters

  • Maximum linear excursion (one way) xmax 4mm
  • Maximum excursion before damage xlim 12.5mm
  • Air volume displaced at xmax VD 196cm³
  • Power handling P 150W
  • Program power Pmax 300W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 6.1Ω
  • Inductance (1kHz) LE 0.39mH
  • VC Diameter 50mm
  • Winding material Copper
  • Former material Aluminium

Magnet

  • Force factor Bl 7.1N/A
  • Motor constant Bl/√RE 2.87N/√W
  • Material Ferrite

Diaphragm

  • Effective diameter 250mm
  • Effective area SD 490cm²
  • Moving mass (including air load) MMS 48.3g
  • Moving mass MMD 40.5g
  • Material Modified cellulose

Suspensions

  • Stiffness KMS 5.88N/mm
  • Compliance CMS 170µm/N
  • Equivalent volume to the compliance VAS 57L
  • Mechanical resistance RMS 7.95N·s/m

Dimensions

  • Nominal diameter 12
  • 300mm
  • Overall diameter 305mm
  • Baffle cutout diameter 285mm
  • Overall depth 130mm
  • Volume occupied by the driver (estimated) 1.4L
  • Net weight 2.5kg
  • Frame material Steel
STX F.30.300.8.MC SPL
STX F.30.300.8.MC Dimensions

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