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 .
  • Sensitivity: 85.4dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -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 5.59 and would be 7.82 with a perfect subwoofer.
      • Details: NBD: ON 0.394, LW 0.322, SP 0.323, PIR 0.291; SM: SP0.94, PIR0.859; LFQ 0.92, LFX 47Hz
    • Tonality (Preference) Score is 6.66 with an EQ and would be 8.63 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.248, 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 142 mm)
    • Weight 5.7 kg
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
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These EQ optimise the Harman score and is a good start for far field listening like in your living room.

KEF Q4 Meta filters_auto_eq

AutomaticEQ

KEF Q4 Meta filters_eq_full

Target v.s. EQ

Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
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