What we know about the measurement:

KEF LS50 Meta is a passive bookshelves that cost around 1000 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 69.6Hz (resp. 49.1Hz).
  • Reference level is normalised to 0.1dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.9dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 5.88 and would be 8.02 with a perfect subwoofer.
      • Details: NBD: ON 0.349, LW 0.29, SP 0.276, PIR 0.264; SM: SP0.946, PIR0.861; LFQ 0.585, LFX 45Hz
    • Tonality (Preference) Score is 6.55 with an EQ and would be 8.5 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.295, LW 0.24, SP 0.262, PIR 0.226; SM: SP0.979, PIR0.961; LFQ 0.585, LFX 41Hz
  • Link to original Review: eac review. Links to other reviews: yt review , asr review , npz review , tnw review .
  • Vendor specifications:
    • Sensitivity 85 dB
    • Impedance 3.5 Ohm
    • SPL
      • peak: 106 dB
    • Size
      • Width 200mm
      • Height 302mm
      • Depth 280mm
    • Weight 7.8kg
KEF LS50 Meta
AutomaticEQ (IIR)
Set preamp gain to: -4.0dB.
Type Freq Q Gain
PK 42.0 1.04 2.88
PK 69.0 0.8 2.25
PK 105.0 1.21 -2.21
PK 976.0 0.37 -0.83
PK 2491.0 1.32 2.68
PK 5165.0 1.04 -1.31
PK 16239.0 2.36 -0.71
Download
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
KEF LS50 Meta
Graphic EQ 15 bands
Set preamp gain to: -0.7dB.
Type Freq Q Gain
PK 25.0 2.14 0.5
PK 40.0 2.14 0.5
PK 63.0 2.14 0.5
PK 100.0 2.14 0.0
PK 160.0 2.14 0.0
PK 250.0 2.14 0.0
PK 400.0 2.14 -0.25
PK 630.0 2.14 -0.25
PK 1000.0 2.14 0.0
PK 1600.0 2.14 0.0
PK 2500.0 2.14 0.25
PK 4000.0 2.14 0.0
PK 6300.0 2.14 0.0
PK 10000.0 2.14 0.0
PK 16000.0 2.14 0.0
Download
This EQ is designed for a 15 bands graphical EQ.
KEF LS50 Meta
Graphic EQ 31 bands
Set preamp gain to: -0.8dB.
Type Freq Q Gain
PK 20.0 4.32 0.0
PK 25.0 4.32 0.5
PK 31.0 4.32 0.5
PK 40.0 4.32 0.5
PK 50.0 4.32 0.5
PK 63.0 4.32 0.5
PK 80.0 4.32 0.25
PK 100.0 4.32 0.0
PK 125.0 4.32 0.0
PK 160.0 4.32 0.0
PK 200.0 4.32 0.0
PK 250.0 4.32 0.0
PK 315.0 4.32 0.0
PK 400.0 4.32 -0.25
PK 500.0 4.32 -0.25
PK 630.0 4.32 -0.25
PK 800.0 4.32 0.0
PK 1000.0 4.32 0.0
PK 1250.0 4.32 0.25
PK 1600.0 4.32 0.0
PK 2000.0 4.32 0.0
PK 2500.0 4.32 0.25
PK 3150.0 4.32 0.25
PK 4000.0 4.32 0.0
PK 5000.0 4.32 0.0
PK 6300.0 4.32 0.0
PK 8000.0 4.32 0.0
PK 10000.0 4.32 0.0
PK 12000.0 4.32 0.0
PK 16000.0 4.32 0.0
PK 20000.0 4.32 0.0
Download
This EQ is designed for a 31 bands graphical EQ.
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)
KEF LS50 Meta: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
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