SUPRAVOX 285 GMF

Mid Bass

Nominal diameter12″ / 285 mm
Resonance47 Hz
Q factor0.38
Sensitivity101.1 dB
Linear excursion± 4 mm
Program Power140 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
  • Sensitivity (1W, 1m, infinite baffle) SPL1W 101.1dB
  • Frequency response 40 - 7000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 47Hz
  • Mechanical quality factor QMS 8.00
  • Electrical quality factor QES 0.39
  • Total quality factor QTS 0.38

Large signal parameters

  • Maximum linear excursion xmax 4mm
  • Air volume displaced at xmax VD 188cm³
  • Power handling P 70W
  • Program power Pmax 140W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 6.5Ω
  • Inductance (1kHz, estimated) LE 1.06mH

Magnet

  • Flux density B 1.4T
  • Force factor Bl 10.7N/A
  • Motor constant Bl/√RE 4.2N/√W
  • Diameter 120mm

Diaphragm

  • Effective diameter 245mm
  • Effective area SD 471cm²
  • Moving mass MMS 20g
  • Moving mass (without air load) MMD 12.8g

Suspensions

  • Stiffness KMS 1.67N/mm
  • Compliance CMS 600µm/N
  • Equivalent volume to the compliance VAS 150L
  • Mechanical resistance RMS 0.74N·s/m
  • Surround material Paper

Dimensions

  • Nominal diameter 12
  • 285mm
  • Overall diameter 290mm
  • Baffle cutout diameter 280mm
  • Overall depth 128mm
  • Flange thickness 8mm
  • Mounting depth 120mm
  • Volume occupied by the driver (estimated) 1.9L
  • Frame material Aluminium
SUPRAVOX 285 GMF Impedance
SUPRAVOX 285 GMF SPL
SUPRAVOX 285 GMF SPL 30°
SUPRAVOX 285 GMF SPL 60°
SUPRAVOX 285 GMF Impulse response
SUPRAVOX 285 GMF Waterfall


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