What we know about the measurement:

Focal Chora 806 is a passive bookshelves

  • Quality of the measurement data is low.
  • Origin of the data is Misc.
  • Format of the data is a scanned image .
  • Sensitivity: 74.1dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 162.5Hz (resp. 162.5Hz).
  • Reference level is normalised to 0.2dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.1dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 2.83 and would be 7.35 with a perfect subwoofer.
      • Details: NBD: ON 0.476, LW 0.298, SP 0.414, PIR 0.321; SM: SP0.801, PIR0.785; LFQ 1.223, LFX 162Hz
    • Tonality (Preference) Score is 3.37 with an EQ and would be 7.89 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.509, LW 0.293, SP 0.325, PIR 0.23; SM: SP0.903, PIR0.936; LFQ 1.223, LFX 162Hz
  • Link to original Review: asr review. Links to other reviews: tnw review .
Focal Chora 806
AutomaticEQ (IIR)
Set preamp gain to: -2.0dB.
Type Freq Q Gain
3 1922.0 0.62 2.1
3 15039.0 1.81 2.26
3 419.0 3.0 0.81
3 7781.0 2.36 -0.75
3 178.0 2.14 -0.85
3 3280.0 2.99 -0.75
3 20.0 0.8 -0.85
3 910.0 2.99 -0.76
3 15249.0 2.99 -0.75
Download

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

Focal Chora 806 filters_auto_eq

AutomaticEQ

Focal Chora 806 filters_eq_full

Target v.s. EQ

Focal Chora 806
Graphic EQ 15 bands
Set preamp gain to: -0.3dB.
Type Freq Q Gain
3 25.0 2.14 0.0
3 40.0 2.14 0.0
3 63.0 2.14 0.0
3 100.0 2.14 0.0
3 160.0 2.14 0.0
3 250.0 2.14 0.0
3 400.0 2.14 0.25
3 630.0 2.14 0.0
3 1000.0 2.14 0.0
3 1600.0 2.14 0.0
3 2500.0 2.14 0.25
3 4000.0 2.14 0.0
3 6300.0 2.14 -0.5
3 10000.0 2.14 -0.5
3 16000.0 2.14 0.0
Download

These EQ is designed for a 15 bands graphical EQ.

Focal Chora 806
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 0.0
3 31.0 4.32 0.0
3 40.0 4.32 0.0
3 50.0 4.32 0.0
3 63.0 4.32 0.0
3 80.0 4.32 0.0
3 100.0 4.32 0.0
3 125.0 4.32 0.0
3 160.0 4.32 0.0
3 200.0 4.32 -0.25
3 250.0 4.32 0.0
3 315.0 4.32 0.0
3 400.0 4.32 0.25
3 500.0 4.32 -0.25
3 630.0 4.32 0.0
3 800.0 4.32 0.0
3 1000.0 4.32 0.0
3 1250.0 4.32 0.25
3 1600.0 4.32 0.0
3 2000.0 4.32 0.25
3 2500.0 4.32 0.25
3 3150.0 4.32 0.0
3 4000.0 4.32 0.0
3 5000.0 4.32 -0.25
3 6300.0 4.32 -0.5
3 8000.0 4.32 -0.5
3 10000.0 4.32 -0.5
3 12000.0 4.32 -0.25
3 16000.0 4.32 0.0
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

Focal Chora 806: comparison between EQs
Focal Chora 806

Comparison betweens various EQs

Focal Chora 806

Improvements made by EQ

Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
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