What we know about the measurement:

KEF Reference 203 is a passive floorstanders that cost around 9000 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 52.7Hz (resp. 43.9Hz).
  • Reference level is normalised to 0.1dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 1.9dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 5.78 and would be 7.79 with a perfect subwoofer.
      • Details: NBD: ON 0.387, LW 0.324, SP 0.305, PIR 0.29; SM: SP0.932, PIR0.837; LFQ 1.261, LFX 42Hz
    • Tonality (Preference) Score is 6.32 with an EQ and would be 8.17 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.362, LW 0.281, SP 0.277, PIR 0.243; SM: SP0.944, PIR0.911; LFQ 1.261, LFX 38Hz
  • Link to original Review: eac review. Links to other reviews: yt review .
  • Vendor specifications:
    • Sensitivity 89 dB
    • Impedance 4.2 Ohm
    • SPL
      • peak: 113 dB
    • Size
      • Width 248mm
      • Height 1020mm
      • Depth 405mm
    • Weight 26.5kg
KEF Reference 203
AutomaticEQ (IIR)
Set preamp gain to: -2.9dB.
Type Freq Q Gain
PK 44.0 2.48 2.89
PK 166.0 2.65 0.69
PK 289.0 2.75 -1.15
PK 942.0 0.26 1.27
PK 976.0 2.9 -1.93
PK 2491.0 0.99 -1.53
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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