Notice

Warning

We have multiple measurements for this speaker. Click here to see the default one (which is higher quality if we have one measurement better than the others).

What we know about the measurement:

KEF Reference 4C is a passive center speaker that cost around 7500USD .

  • Quality of the measurement data is high .
  • Origin of the data is ASR.
  • Format of the data is generated by a Klippel NFS .
  • Sensitivity: 90.9dB (avg. 100Hz-1kHz for 2.83V estimated at 1m)
  • -3dB (resp. -6db) point v.s. reference is at 67.4Hz (resp. 48.3Hz).
  • Reference level is normalised to 0.2dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.6dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-50.0°, 50.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-40.0°, 50.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 5.89 and would be 7.3 with a perfect subwoofer.
      • Details: NBD: ON 0.551, LW 0.456, SP 0.326, PIR 0.328; SM: SP0.965, PIR0.85; LFQ 1.447, LFX 30Hz
    • Tonality (Preference) Score is 6.99 with an EQ and would be 8.31 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.379, LW 0.286, SP 0.274, PIR 0.21; SM: SP0.971, PIR0.949; LFQ 1.447, LFX 29Hz
  • Vertical measurement
  • Link to Original review.
  • Link to original Review: white_paper review. .
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
;