What we know about the measurement:

AsciLab A6B Passive is a passive bookshelves that cost around 2900 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 41.0Hz (resp. 38.1Hz).
  • Reference level is normalised to -0.0dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 1.5dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 6.58 and would be 8.32 with a perfect subwoofer.
      • Details: NBD: ON 0.307, LW 0.296, SP 0.251, PIR 0.247; SM: SP0.949, PIR0.924; LFQ 0.757, LFX 36Hz
    • Tonality (Preference) Score is 6.79 with an EQ and would be 8.37 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.303, LW 0.293, SP 0.278, PIR 0.26; SM: SP0.966, PIR0.959; LFQ 0.68, LFX 33Hz
  • Link to original Review: asr review. Links to other reviews: asr2 review .
  • Vendor specifications:
    • Size
      • Width 220mm
      • Height 400mm
      • Depth 260mm
    • Weight 13.0kg
AsciLab A6B Passive
AutomaticEQ (IIR)
Set preamp gain to: -3.6dB.
Type Freq Q Gain
PK 28.0 2.31 2.88
PK 38.0 2.19 1.79
PK 190.0 0.97 0.93
PK 666.0 2.82 0.66
PK 8110.0 0.49 -1.27
Download
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
AsciLab A6B Passive
AutomaticEQ LW (IIR)
Set preamp gain to: -3.8dB.
Type Freq Q Gain
PK 32.0 2.96 2.85
PK 38.0 1.44 1.22
PK 139.0 2.72 0.51
PK 211.0 2.01 0.84
PK 600.0 1.96 0.56
PK 976.0 2.84 -0.98
PK 1121.0 2.99 0.93
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)
AsciLab A6B Passive: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
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