FOCAL 3W 0251

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FOCAL 3W 0251       order no. fa-X3W0251       - not available
8 cm midrange driver with high quality cone. The spider is rear ventilated for better cooling. The speaker has terminals to be connected.
  • resonance frequency fs = 207,66 Hz
  • impedance R = 4 Ohm
  • sound pressure level SPL = 86,52 dB (2,83V; 1m)
  • DC resistance Re = 3,3 Ohm
  • force factor BL = 3,93 N/A
  • effective piston radiating area Sd = 33,18 cm2
  • effective mechanical mass incl. air load mms = 3,15 g
  • equivalent volume of compliance Vas = 0,29 l
  • total Q factor Qts = 0,81 (Qms=9,65, Qes=0,88)
  • mounting diameter d = 73,5 mm
  • overall diameter d = 88 mm
  • mounting depth (not countersunk) t = 42 mm
  • mass m = 0,186 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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