What we know about the measurement:

Buchardt Audio S400 MKII is a passive bookshelves that cost around 2250 USD each.

  • 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 60.1Hz (resp. 47.6Hz).
  • Reference level is normalised to 0.0dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 1.6dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 5.36 and would be 7.43 with a perfect subwoofer.
      • Details: NBD: ON 0.338, LW 0.317, SP 0.308, PIR 0.311; SM: SP0.846, PIR0.659; LFQ 0.621, LFX 43Hz
    • Tonality (Preference) Score is 6.84 with an EQ and would be 8.42 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.3, LW 0.269, SP 0.238, PIR 0.231; SM: SP0.962, PIR0.94; LFQ 0.696, LFX 33Hz
  • Link to original Review: eac review. Links to other reviews: yt review .
  • Vendor specifications:
    • Sensitivity 87 dB
    • Impedance 4 Ohm
    • Size
      • Width 180mm
      • Height 365mm
      • Depth 280mm
    • Weight 7.5kg
Buchardt Audio S400 MKII
AutomaticEQ (IIR)
Set preamp gain to: -3.5dB.
Type Freq Q Gain
PK 37.0 0.74 2.91
PK 60.0 0.76 2.89
PK 85.0 0.78 -3.8
PK 504.0 3.0 1.2
PK 1480.0 2.98 1.37
PK 8397.0 2.9 -0.98
PK 13652.0 0.89 -2.35
Download
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
Buchardt Audio S400 MKII
AutomaticEQ LW (IIR)
Set preamp gain to: -2.6dB.
Type Freq Q Gain
PK 58.0 2.67 2.92
PK 98.0 1.65 -1.24
PK 166.0 1.72 -0.71
PK 504.0 2.96 1.17
PK 1700.0 1.01 1.19
PK 5536.0 2.78 1.06
PK 11882.0 2.84 -1.1
Download
This EQ optimise for a flat listening window and is a good start for near field listening like on your desk.
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)
Buchardt Audio S400 MKII: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
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