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 measured 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 6.1
and would be 7.4 with a
perfect subwoofer.
- Details: NBD: ON 0.55, LW 0.46, SP 0.33, PIR 0.32; SM: SP0.97, PIR0.89; LFQ 1.6, LFX 29Hz
- Tonality (Preference) Score is 7.1
with an EQ and would be 8.3 with a
perfect subwoofer and the same EQ.
- Details: NBD: ON 0.4, LW 0.3, SP 0.27, PIR 0.21; SM: SP0.98, PIR0.97; LFQ 1.6, LFX 27Hz
- Tonality (Preference) Score is 6.1
and would be 7.4 with a
perfect subwoofer.
- Vertical measurement
- Link to Original review.
- Link to original Review: white_paper review. .
