What we know about the measurement:

Neumann KH 420G is an active bookshelves that cost around 9000 USD for a pair.

  • Quality of the measurement data is high.
  • Origin of the data is ASR.
  • Format of the data is generated by a Klippel NFS .
  • -3dB (resp. -6db) point v.s. reference is at 27.8Hz (resp. 26.4Hz).
  • Reference level is normalised to -0.0dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 1.2dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 7.06 and would be 8.18 with a perfect subwoofer.
      • Details: NBD: ON 0.339, LW 0.312, SP 0.306, PIR 0.263; SM: SP0.956, PIR0.921; LFQ 1.425, LFX 26Hz
    • Tonality (Preference) Score is 7.4 with an EQ and would be 8.41 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.318, LW 0.297, SP 0.287, PIR 0.238; SM: SP0.981, PIR0.963; LFQ 1.425, LFX 24Hz
  • Link to Original review.
  • Vendor specifications:
    • SPL
      • max: 116 dB
      • peak: 122 dB
      • pink_noise: 90 dB
    • Size
      • Width 383mm
      • Height 253mm
      • Depth 292mm
    • Weight 35.0kg
Neumann KH 420G
AutomaticEQ (IIR)
Set preamp gain to: -2.5dB.
Type Freq Q Gain
LS 27.0 0.97 2.72
PK 68.0 1.49 2.04
PK 169.0 1.94 0.71
PK 245.0 1.65 -0.75
PK 478.0 2.99 0.87
PK 1594.0 1.78 0.62
PK 1948.0 2.05 0.22
PK 7173.0 0.95 -0.74
LS 13092.0 0.96 0.32
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This EQ optimise the Harman score and is a good start for far field listening like in your living room.
Neumann KH 420G
Graphic EQ 15 bands
Set preamp gain to: -0.5dB.
Type Freq Q Gain
PK 25.0 2.14 0.5
PK 40.0 2.14 0.0
PK 63.0 2.14 0.25
PK 100.0 2.14 0.0
PK 160.0 2.14 0.0
PK 250.0 2.14 -0.25
PK 400.0 2.14 0.0
PK 630.0 2.14 0.0
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
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This EQ is designed for a 15 bands graphical EQ.
Neumann KH 420G
Graphic EQ 31 bands
Set preamp gain to: -0.5dB.
Type Freq Q Gain
PK 20.0 4.32 0.0
PK 25.0 4.32 0.5
PK 31.0 4.32 0.0
PK 40.0 4.32 0.0
PK 50.0 4.32 0.25
PK 63.0 4.32 0.25
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 -0.25
PK 315.0 4.32 0.0
PK 400.0 4.32 0.0
PK 500.0 4.32 0.25
PK 630.0 4.32 0.0
PK 800.0 4.32 0.0
PK 1000.0 4.32 0.0
PK 1250.0 4.32 0.0
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 0.0
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)
Neumann KH 420G: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
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