FOCAL 11W7670

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recommended cabinet 1:
closed cabinet with 9,8 L volume
from 77/48 Hz (-3dB/-8dB)
 
recommended cabinet 2:
40 L volume bass reflex cabinet
with HP100 reflex tube, 30 cm long.
from 36/30 Hz (-3dB/-8dB).

FOCAL 11W7670       order no. fa-X11W7670       EUR 449,00 excl. VAT: € 377.31 / $ 441.45
25 cm bass driver with high quality cone. The basket is made of die-cast. To avoid compression effects the driver possesses a pole piece hole. The spider is rear ventilated for better cooling.
  • resonance frequency fs = 44,59 Hz
  • impedance R = 4 Ohm
  • sound pressure level SPL = 88,11 dB (2,83V; 1m)
  • DC resistance Re = 3,3 Ohm
  • force factor BL = 12,8 N/A
  • effective piston radiating area Sd = 330,06 cm2
  • effective mechanical mass incl. air load mms = 85,09 g
  • equivalent volume of compliance Vas = 22,91 l
  • total Q factor Qts = 0,45 (Qms=7,31, Qes=0,48)
  • mounting diameter d = 228 mm
  • overall diameter d = 270 mm
  • mounting depth (not countersunk) t = 148 mm
  • mass m = 8,1 kg
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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