What we know about the measurement:

Barefoot Footprint 01 is an active bookshelves that cost around 4000 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 35.2Hz (resp. 29.3Hz).
  • Reference level is normalised to 0.1dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.9dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-70.0°, 70.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-30.0°, 20.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 5.88 and would be 7.1 with a perfect subwoofer.
      • Details: NBD: ON 0.402, LW 0.399, SP 0.511, PIR 0.422; SM: SP0.826, PIR0.729; LFQ 0.652, LFX 27Hz
    • Tonality (Preference) Score is 7.3 with an EQ and would be 8.31 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.295, LW 0.267, SP 0.357, PIR 0.264; SM: SP0.948, PIR0.931; LFQ 0.652, LFX 24Hz
  • Link to Original review.
Barefoot Footprint 01
AutomaticEQ (IIR)
Set preamp gain to: -2.5dB.
Type Freq Q Gain
5 47.0 1.16 2.88
3 64.0 0.81 -1.99
3 418.0 1.35 2.17
3 790.0 1.0 -1.08
3 1067.0 2.94 2.43
3 1394.0 2.76 -2.86
3 2813.0 2.76 -1.6
3 6937.0 1.32 0.34
3 12246.0 1.02 1.44
Download

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

Barefoot Footprint 01 filters_auto_eq

AutomaticEQ

Barefoot Footprint 01 filters_eq_full

Target v.s. EQ

Barefoot Footprint 01
Graphic EQ 15 bands
Set preamp gain to: -0.3dB.
Type Freq Q Gain
3 25.0 2.14 0.25
3 40.0 2.14 0.0
3 63.0 2.14 -0.5
3 100.0 2.14 -0.5
3 160.0 2.14 -0.5
3 250.0 2.14 0.0
3 400.0 2.14 0.25
3 630.0 2.14 -0.25
3 1000.0 2.14 0.0
3 1600.0 2.14 -0.5
3 2500.0 2.14 -0.5
3 4000.0 2.14 0.0
3 6300.0 2.14 0.0
3 10000.0 2.14 0.25
3 16000.0 2.14 0.25
Download

These EQ is designed for a 15 bands graphical EQ.

Barefoot Footprint 01
Graphic EQ 31 bands
Set preamp gain to: -0.3dB.
Type Freq Q Gain
3 20.0 4.32 0.0
3 25.0 4.32 0.25
3 31.0 4.32 0.25
3 40.0 4.32 0.0
3 50.0 4.32 -0.25
3 63.0 4.32 -0.5
3 80.0 4.32 -0.5
3 100.0 4.32 -0.5
3 125.0 4.32 -0.5
3 160.0 4.32 -0.5
3 200.0 4.32 -0.25
3 250.0 4.32 0.0
3 315.0 4.32 0.25
3 400.0 4.32 0.25
3 500.0 4.32 0.0
3 630.0 4.32 -0.25
3 800.0 4.32 -0.25
3 1000.0 4.32 0.0
3 1250.0 4.32 -0.5
3 1600.0 4.32 -0.5
3 2000.0 4.32 -0.25
3 2500.0 4.32 -0.5
3 3150.0 4.32 -0.5
3 4000.0 4.32 0.0
3 5000.0 4.32 0.0
3 6300.0 4.32 0.0
3 8000.0 4.32 0.0
3 10000.0 4.32 0.25
3 12000.0 4.32 0.25
3 16000.0 4.32 0.25
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

Barefoot Footprint 01: comparison between EQs
Barefoot Footprint 01

Comparison betweens various EQs

Barefoot Footprint 01

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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