What we know about the measurement:

KEF Q150 is a passive bookshelves that cost around 500 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 .
  • Sensitivity: 84.2dB (avg. 100Hz-1kHz for 2.83V estimated at 1m)
  • -3dB (resp. -6db) point v.s. reference is at 52.7Hz (resp. 48.3Hz).
  • Reference level is normalised to 0.2dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.7dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-50.0°, 50.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-50.0°, 40.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 4.6 and would be 6.8 with a perfect subwoofer.
      • Details: NBD: ON 0.458, LW 0.373, SP 0.355, PIR 0.339; SM: SP0.833, PIR0.548; LFQ 0.621, LFX 46Hz
    • Tonality (Preference) Score is 6.27 with an EQ and would be 8.34 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.341, LW 0.269, SP 0.276, PIR 0.224; SM: SP0.967, PIR0.942; LFQ 0.621, LFX 43Hz
  • Link to original Review: eac review. Links to other reviews: yt review .
KEF Q150
AutomaticEQ (IIR)
Set preamp gain to: -2.5dB.
Type Freq Q Gain
5 106.0 0.32 2.53
3 143.0 1.13 -1.57
3 584.0 0.6 1.6
3 844.0 2.61 -2.83
3 1220.0 2.62 -1.64
3 1594.0 1.82 1.91
3 4645.0 2.64 0.57
3 9372.0 0.98 -2.06
3 14965.0 0.96 -2.4
Download

These EQ optimise the Harman score and is a good start for far field listening like in your living room.

KEF Q150 filters_auto_eq

AutomaticEQ

KEF Q150 filters_eq_full

Target v.s. EQ

KEF Q150
Graphic EQ 15 bands
Set preamp gain to: -0.6dB.
Type Freq Q Gain
3 25.0 2.14 0.5
3 40.0 2.14 0.5
3 63.0 2.14 0.25
3 100.0 2.14 0.0
3 160.0 2.14 0.0
3 250.0 2.14 0.0
3 400.0 2.14 0.25
3 630.0 2.14 0.0
3 1000.0 2.14 0.0
3 1600.0 2.14 0.25
3 2500.0 2.14 0.25
3 4000.0 2.14 -0.25
3 6300.0 2.14 -0.25
3 10000.0 2.14 -0.5
3 16000.0 2.14 -0.5
Download

These EQ is designed for a 15 bands graphical EQ.

KEF Q150
Graphic EQ 31 bands
Set preamp gain to: -0.7dB.
Type Freq Q Gain
3 20.0 4.32 0.0
3 25.0 4.32 0.5
3 31.0 4.32 0.5
3 40.0 4.32 0.5
3 50.0 4.32 0.5
3 63.0 4.32 0.25
3 80.0 4.32 0.25
3 100.0 4.32 0.0
3 125.0 4.32 -0.25
3 160.0 4.32 -0.25
3 200.0 4.32 -0.25
3 250.0 4.32 0.0
3 315.0 4.32 0.0
3 400.0 4.32 0.0
3 500.0 4.32 0.0
3 630.0 4.32 0.0
3 800.0 4.32 -0.5
3 1000.0 4.32 -0.25
3 1250.0 4.32 -0.5
3 1600.0 4.32 0.25
3 2000.0 4.32 0.0
3 2500.0 4.32 0.25
3 3150.0 4.32 -0.25
3 4000.0 4.32 -0.25
3 5000.0 4.32 -0.25
3 6300.0 4.32 -0.5
3 8000.0 4.32 -0.5
3 10000.0 4.32 -0.75
3 12000.0 4.32 -0.75
3 16000.0 4.32 -0.5
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

KEF Q150: comparison between EQs
KEF Q150

Comparison betweens various EQs

KEF Q150

Improvements made by EQ

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