Focal SLATEFIBER 200 SF

4Ω

Woofer

Nominal diameter8″ / 200 mm
Resonance46 Hz
Q factor0.55
Sensitivity91 dB
Linear excursion± 4 mm
Program power160 W
Focal 200 SF WooferFocal 200 SF WooferFocal 200 SF Woofer
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 91dB
  • Frequency response 50 - 1000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 46Hz
  • Mechanical quality factor QMS 9.00
  • Electrical quality factor QES 0.70
  • Total quality factor QTS 0.55

Large signal parameters

  • Maximum linear excursion (one way) xmax 4mm
  • Air volume displaced at xmax VD 80cm³
  • Power handling P 80W
  • Program power Pmax 160W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 2.7Ω
  • Inductance (1kHz, estimated) LE 0.35mH
  • VC Diameter 25mm
  • Winding material Copper
  • Former material Kapton

Magnet

  • Force factor Bl 4.5N/A
  • Motor constant Bl/√RE 2.74N/√W
  • Diameter 85mm
  • Material Ferrite

Diaphragm

  • Effective diameter 160mm
  • Effective area SD 201cm²
  • Moving mass (including air load) MMS 14g
  • Moving mass MMD 11.8g
  • Material Slate fiber

Suspensions

  • Stiffness KMS 1.82N/mm
  • Compliance CMS 550µm/N
  • Equivalent volume to the compliance VAS 29L
  • Mechanical resistance RMS 0.45N·s/m
  • Surround material Butyl Rubber

Dimensions

  • Nominal diameter 8″
  • 200mm
  • Overall diameter 209mm
  • Baffle cutout diameter 183mm
  • Overall depth 73mm
  • Flange thickness 10mm
  • Mounting depth 63mm
  • Volume occupied by the driver (estimated) 0.43L
  • Net weight 1.05kg
SPL & Impedance
Focal 200 SF SPL & Impedance
Focal 200 SF Dimensions
PDF fileDatasheet

Export this driver to a box design software:

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