Fostex FE83A-VB

Full-range

Nominal diameter3.5″ / 83 mm
Resonance104 Hz
Q factor0.63
Sensitivity83.4 dB
Program Power10 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 83.4dB
  • Frequency response 104 - 20000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 104Hz
  • Mechanical quality factor QMS 3.81
  • Electrical quality factor QES 0.76
  • Total quality factor QTS 0.63

Large signal parameters

  • Power handling P 5W
  • Program power Pmax 10W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 6.9Ω
  • Inductance (1kHz) LE 0.06mH
  • VC Diameter 16mm

Magnet

  • Force factor Bl 3.3N/A
  • Motor constant Bl/√RE 1.26N/√W
  • Weight 0.102kg
  • Material AlNiCo

Diaphragm

  • Effective diameter 60mm
  • Effective area SD 22.3cm²
  • Moving mass MMS 1.82g
  • Moving mass (without air load) MMD 1.7g
  • Material Two-layer paper

Suspensions

  • Stiffness KMS 0.781N/mm
  • Compliance CMS 1280µm/N
  • Equivalent volume to the compliance VAS 0.9L
  • Mechanical resistance RMS 0.31N·s/m

Dimensions

  • Nominal diameter 3.5
  • 83mm
  • Overall diameter 83mm
  • Baffle cutout diameter 73mm
  • Volume occupied by the driver (estimated) 0.16L
  • Net weight 0.42kg
Fostex FE83A-VB SPL & Impedance
Fostex FE83A-VB Dimensions

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