Fountek FR89EX

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recommended cabinet 1:
closed cabinet with 0,48 L volume
from 167/105 Hz (-3dB/-8dB)
 
recommended cabinet 2:
1,9 L volume bass reflex cabinet
with 2cm-Rohr reflex tube, 6 cm long.
from 79/65 Hz (-3dB/-8dB).

Fountek FR89EX       order no. fo-fr89EX       EUR 44,00 excl. VAT: € 36.97 / $ 43.63
8 cm full range driver with aluminium cone. The magnet system is based on Neodymium technology.
  • power handling (continuous/programme) = 25 W
  • frequency range = 70-2000 Hz
  • resonance frequency fs = 97 Hz
  • impedance R = 8 Ohm
  • sound pressure level SPL = 83,6 dB (2,83V; 1m)
  • DC resistance Re = 5,7 Ohm
  • force factor BL = 3,781 N/A
  • effective piston radiating area Sd = 27,34 cm2
  • effective mechanical mass incl. air load mms = 2,611 g
  • equivalent volume of compliance Vas = 1,111 l
  • total Q factor Qts = 0,47 (Qms=1,642, Qes=0,652)
  • voice coil diameter = 25 mm
  • maximum peak linear excursion vibration xlin = +/- 5 mm
  • mounting diameter d = 73 mm
  • overall diameter d = 88,4 mm
  • mounting depth (not countersunk) t = 46,9 mm
  • mass m = 0,525 kg
PDF data sheet
The cabinet volume calculations are executed considering an external resistance of 0.3 Ohm. We are using, if no other data is known or available, the information supplied by the manufacturer.

Please note: the frequency response doesn't say much about the cut-off frequency inside the cabinet! Therefore, we mostly give you 2 examples with dimensioning considerations and an indication, how low the loudspeaker will reproduce.

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