What we know about the measurement:

KEF Q4 Meta is a passive bookshelves that cost around 400 USD for a pair.

  • Quality of the measurement data is medium.
  • Origin of the data is KEF.
  • Format of the data is .
  • -3dB (resp. -6db) point v.s. reference is at 80.2Hz (resp. 49.3Hz).
  • Reference level is normalised to 0.4dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 4.4dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 5.58 and would be 7.81 with a perfect subwoofer.
      • Details: NBD: ON 0.398, LW 0.322, SP 0.323, PIR 0.291; SM: SP0.94, PIR0.859; LFQ 0.92, LFX 47Hz
    • Tonality (Preference) Score is 6.65 with an EQ and would be 8.62 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.249, LW 0.177, SP 0.256, PIR 0.199; SM: SP0.95, PIR0.931; LFQ 0.92, LFX 41Hz
  • Note: the off-axis average curves are truncated at 200Hz as this is close to the LF cut-off limit of our anechoic chamber. The on-axis LF response has been compensated using ground plane measurements carried out in free-field and is therefore valid only for that singular curve..
  • Vendor specifications:
    • Sensitivity 86 dB
    • Impedance 4 Ohm
    • SPL
      • peak: 108 dB
    • Size
      • Width 250mm
      • Height 400mm
      • Depth 142mm
    • Weight 5.7kg
KEF Q4 Meta
AutomaticEQ (IIR)
Set preamp gain to: -2.5dB.
Type Freq Q Gain
PK 62.0 0.61 2.97
PK 166.0 1.01 -2.91
PK 219.0 2.99 1.72
PK 424.0 0.53 -1.4
PK 879.0 2.99 -1.3
PK 1244.0 1.49 2.97
PK 3405.0 1.0 -1.19
Download
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
Improvement made by adding the above EQ
EQ
AutoEQ
Target v.s. EQ
Target v.s. EQ
Histogram of errors
On Axis (fullrange)
Listening Window (fullrange)
Predicted In-Room Response (fullrange)
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