What we know about the measurement:

Buchardt Audio S400 is a passive bookshelves that cost around 1800 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 61.5Hz (resp. 49.8Hz).
  • Reference level is normalised to -0.1dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.8dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 5.4 and would be 7.59 with a perfect subwoofer.
      • Details: NBD: ON 0.395, LW 0.34, SP 0.381, PIR 0.319; SM: SP0.878, PIR0.798; LFQ 0.537, LFX 46Hz
    • Tonality (Preference) Score is 6.73 with an EQ and would be 8.54 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.314, LW 0.251, SP 0.271, PIR 0.199; SM: SP0.967, PIR0.964; LFQ 0.537, LFX 38Hz
  • Link to Original review.
Buchardt Audio S400
AutomaticEQ (IIR)
Set preamp gain to: -2.9dB.
Type Freq Q Gain
LS 64.0 0.67 2.97
PK 245.0 1.52 0.34
PK 547.0 2.97 -1.17
PK 646.0 2.83 2.65
PK 790.0 2.37 -1.23
PK 2302.0 1.84 2.93
PK 3325.0 2.23 -1.54
PK 9372.0 1.48 -1.44
PK 13537.0 0.42 0.59
Download
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
Buchardt Audio S400
flipflop@ASR (IIR)
Set preamp gain to: -2.8dB.
Type Freq Q Gain
PK 343.0 16.0 0.6
PK 489.0 5.0 5.0
PK 516.0 5.0 -11.0
PK 525.0 5.0 5.2
PK 573.0 25.0 -0.6
PK 616.0 5.0 3.7
PK 776.0 1.0 -0.8
PK 915.0 10.0 -0.4
PK 1146.0 5.0 1.5
PK 1425.0 18.0 0.7
PK 1940.0 15.0 1.4
PK 2210.0 15.0 1.0
PK 2324.0 5.0 1.7
PK 2540.0 7.0 1.3
PK 4720.0 5.0 -0.6
PK 5346.0 1.53 1.5
PK 6740.0 10.0 -0.5
PK 8470.0 10.0 -0.9
PK 10570.0 14.0 -0.4
PK 16000.0 1.25 2.8
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This EQ is designed by ASR member flipflop.
Buchardt Audio S400
Graphic EQ 15 bands
Set preamp gain to: -0.6dB.
Type Freq Q Gain
PK 25.0 2.14 0.5
PK 40.0 2.14 0.5
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 0.0
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 0.5
PK 4000.0 2.14 0.0
PK 6300.0 2.14 0.0
PK 10000.0 2.14 -0.25
PK 16000.0 2.14 0.0
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This EQ is designed for a 15 bands graphical EQ.
Buchardt Audio S400
Graphic EQ 31 bands
Set preamp gain to: -0.9dB.
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 0.25
PK 80.0 4.32 0.0
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 0.0
PK 500.0 4.32 0.0
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 0.25
PK 2000.0 4.32 0.5
PK 2500.0 4.32 0.75
PK 3150.0 4.32 0.25
PK 4000.0 4.32 0.25
PK 5000.0 4.32 0.25
PK 6300.0 4.32 0.25
PK 8000.0 4.32 0.0
PK 10000.0 4.32 0.0
PK 12000.0 4.32 0.25
PK 16000.0 4.32 0.5
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)
Buchardt Audio S400: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
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