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.
  • Directivity
    • Horizontal directivity is (-50.0°, 50.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-30.0°, 30.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • 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
Download

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

Neumann KH 420G filters_auto_eq

AutomaticEQ

Neumann KH 420G filters_eq_full

Target v.s. EQ

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
Download

These 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

These EQ is designed for a 31 bands graphical EQ.

Neumann KH 420G: comparison between EQs
Neumann KH 420G

Comparison betweens various EQs

Neumann KH 420G

Improvements made by EQ
CEA2034
CEA2034 Normalized
On Axis
Early Reflections
Estimated In-Room Response
Horizontal Reflections
Vertical Reflections
SPL Horizontal
SPL Vertical
SPL Horizontal Normalized
SPL Vertical Normalized
SPL Horizontal Contour
SPL Vertical Contour
SPL Horizontal Contour Normalized
SPL Vertical Contour Normalized
SPL Horizontal Contour 3D
SPL Vertical Contour 3D
SPL Horizontal Contour Normalized 3D
SPL Vertical Contour Normalized 3D
SPL Horizontal Radar
SPL Vertical Radar
CEA2034
CEA2034 Normalized
On Axis
Early Reflections
Estimated In-Room Response
Horizontal Reflections
Vertical Reflections
SPL Horizontal
SPL Vertical
SPL Horizontal Normalized
SPL Vertical Normalized
SPL Horizontal Contour
SPL Vertical Contour
SPL Horizontal Contour Normalized
SPL Vertical Contour Normalized
SPL Horizontal Contour 3D
SPL Vertical Contour 3D
SPL Horizontal Contour Normalized 3D
SPL Vertical Contour Normalized 3D
SPL Horizontal Radar
SPL Vertical Radar
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
Frequency Frequency with EQ
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