What we know about the measurement:

Human Speakers 81 dk is a passive bookshelves that cost around 1200 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 .
  • Sensitivity: 84.7dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 63.0Hz (resp. 43.9Hz).
  • Reference level is normalised to 0.1dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 5.2dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-40.0°, 40.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-20.0°, 30.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 1.83 and would be 3.78 with a perfect subwoofer.
      • Details: NBD: ON 0.853, LW 0.771, SP 0.771, PIR 0.743; SM: SP0.38, PIR0.192; LFQ 0.996, LFX 41Hz
    • Tonality (Preference) Score is 6.11 with an EQ and would be 7.23 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.567, LW 0.419, SP 0.468, PIR 0.396; SM: SP0.912, PIR0.925; LFQ 0.885, LFX 26Hz
  • Link to Original review.
Human Speakers 81 dk
AutomaticEQ (IIR)
Set preamp gain to: -3.1dB.
Type Freq Q Gain
3 26.0 0.6 3.0
3 504.0 0.25 3.0
3 522.0 1.51 -2.49
3 792.0 3.0 -5.07
3 1046.0 2.99 3.0
3 1954.0 2.99 -4.66
3 4194.0 0.79 -5.56
Download

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

Human Speakers 81 dk filters_auto_eq

AutomaticEQ

Human Speakers 81 dk filters_eq_full

Target v.s. EQ

Human Speakers 81 dk
AutomaticEQ LW (IIR)
Set preamp gain to: -5.6dB.
Type Freq Q Gain
3 58.0 1.65 2.6
3 211.0 1.17 2.79
3 1161.0 2.81 3.0
3 1954.0 3.0 -4.14
3 3525.0 2.91 -1.51
3 13186.0 0.58 3.0
3 15685.0 1.37 3.0
Download

These EQ optimise for a flat listening window and is a good start for near field listening like on your desk.

Human Speakers 81 dk: comparison between EQs
Human Speakers 81 dk

Comparison betweens various EQs

Human Speakers 81 dk

Improvements made by 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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