LaVoce FSF030.70-4

4Ω
8Ω16Ω

Full-range

Nominal diameter3″ / 70 mm
Resonance128 Hz
Q factor0.78
Sensitivity86.1 dB
Linear excursion± 1.9 mm
Program Power60 W
LaVoce FSF030.70-4 Full-range
Impedance
Excursion
Velocity
SPL
Phase
Group delay
Step response
Tone Burst
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 86.1dB
  • Frequency response 120 - 21000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 128Hz
  • Mechanical quality factor QMS 5.52
  • Electrical quality factor QES 0.91
  • Total quality factor QTS 0.78

Large signal parameters

  • Maximum linear excursion (one way) xmax 1.9mm
  • Maximum excursion before damage xlim 2.9mm
  • Air volume displaced at xmax VD 6.3cm³
  • Power handling P 30W
  • Program power Pmax 60W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 3.8Ω
  • Inductance (1kHz) LE 0.04mH
  • VC Diameter 20mm
  • Winding height HVC 5.9mm
  • Winding material Copper Clad Aluminium
  • Former material Glass fiber

Magnet

  • Force factor Bl 2.65N/A
  • Motor constant Bl/√RE 1.36N/√W
  • Air gap height HAG 4mm
  • Diameter 70mm
  • Height 15mm
  • Material Ferrite

Diaphragm

  • Effective diameter 65mm
  • Effective area SD 33cm²
  • Moving mass MMS 2.11g
  • Moving mass (without air load) MMD 2g
  • Material Water resistant treated paper

Suspensions

  • Stiffness KMS 1.35N/mm
  • Compliance CMS 740µm/N
  • Equivalent volume to the compliance VAS 1.13L
  • Mechanical resistance RMS 0.31N·s/m
  • Surround material Rubber

Dimensions

  • Nominal diameter 3″
  • 70mm
  • Volume occupied by the driver 0.13L
  • Net weight 0.5kg
  • Frame material Steel
SPL & Impedance
LaVoce FSF030.70-4 SPL & Impedance
LaVoce FSF030.70-4 Dimensions
PDF fileDatasheet

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