Fostex FF85WK

€57.50 *

Prices incl. VAT plus shipping costs

Delivery time appr. 1-3 workdays

  • fo-FF85WK
Double-layer cone / up-roll edge using a new material A double-layer cone paper consists of... more
Product information "Fostex FF85WK"

Double-layer cone / up-roll edge using a new material

A double-layer cone paper consists of two layers. One is a basic layer and the other is a surface layer. In the FF-WK series, a long-fibered (low freeness) wooden pulp is used for the basic layer, which has high rigidity realized by the large volume structure and appropriate internal loss. For the surface layer, the bincho charcoal powder is blended with a short-fibered (high freeness) kenaf, which allows to accelerate the propagation speed on the cone paper surface.

 

Specifications

  • power handling (continuous/programme) = 5/15 W
  • frequency range = 100-28000 Hz
  • resonance frequency fs = 115 Hz
  • impedance R = 8 Ohm
  • sound pressure level SPL = 86,5 dB (2,83V; 1m)
  • DC resistance Re = 7,2 Ohm
  • force factor BL = 3,93 N/A
  • effective piston radiating area Sd = 28 cm2
  • effective mechanical mass incl. air load mms = 2 g
  • equivalent volume of compliance Vas = 1,03 l
  • total Q factor Qts = 0,56 (Qms=3,3, Qes=0,68)
  • voice coil diameter = 16 mm
  • maximum peak linear excursion vibration xlin = +/- 0,35 mm
  • mounting diameter d = 73 mm
  • overall diameter d = 83 mm
  • mounting depth (not countersunk) t = 46,7 mm
  • mass m = 0,45 kg
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