What we know about the measurement:

KEF Q8 Meta is a passive surround that cost around 1400 USD for a pair.

  • Quality of the measurement data is high.
  • Origin of the data is ErinsAudioCorner.
  • Format of the data is generated by a Klippel NFS .
  • -3dB (resp. -6db) point v.s. reference is at 116.5Hz (resp. 98.1Hz).
  • Reference level is normalised to 0.1dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 1.7dB over the same frequency range.
  • Tonality (Preference) Score
    • Note: The tonality (Preference) score does not make sense for surround speakers. Don't give too much credits to the value.
    • Tonality (Preference) Score is 2.64 and would be 6.21 with a perfect subwoofer.
      • Details: NBD: ON 0.498, LW 0.436, SP 0.459, PIR 0.426; SM: SP0.777, PIR0.452; LFQ 0.88, LFX 98Hz
    • Tonality (Preference) Score is 5.22 with an EQ and would be 8.42 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.333, LW 0.244, SP 0.28, PIR 0.215; SM: SP0.971, PIR0.953; LFQ 0.736, LFX 79Hz
  • Link to original Review: yt review. .
  • Vendor specifications:
    • Sensitivity 86 dB
    • Impedance 3.2 Ohm
    • SPL
      • peak: 109 dB
    • Size
      • Width 180mm
      • Height 176mm
      • Depth 259mm
    • Weight 4.5kg
KEF Q8 Meta
AutomaticEQ (IIR)
Set preamp gain to: -3.0dB.
Type Freq Q Gain
PK 117.0 0.89 2.99
PK 139.0 0.25 3.0
PK 166.0 0.98 -5.9
PK 739.0 1.08 -2.45
PK 1333.0 2.99 1.87
PK 7059.0 1.49 -3.72
PK 16239.0 1.5 -2.02
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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