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
PK 1922.0 0.62 2.1
PK 15039.0 1.81 2.26
PK 419.0 3.0 0.81
PK 7781.0 2.36 -0.75
PK 178.0 2.14 -0.85
PK 3280.0 2.99 -0.75
PK 20.0 0.8 -0.85
PK 910.0 2.99 -0.76
PK 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
PK 25.0 2.14 0.0
PK 40.0 2.14 0.0
PK 63.0 2.14 0.0
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 0.25
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 0.25
PK 4000.0 2.14 0.0
PK 6300.0 2.14 -0.5
PK 10000.0 2.14 -0.5
PK 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
PK 20.0 4.32 0.0
PK 25.0 4.32 0.0
PK 31.0 4.32 0.0
PK 40.0 4.32 0.0
PK 50.0 4.32 0.0
PK 63.0 4.32 0.0
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 -0.25
PK 250.0 4.32 0.0
PK 315.0 4.32 0.0
PK 400.0 4.32 0.25
PK 500.0 4.32 -0.25
PK 630.0 4.32 0.0
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 0.0
PK 2000.0 4.32 0.25
PK 2500.0 4.32 0.25
PK 3150.0 4.32 0.0
PK 4000.0 4.32 0.0
PK 5000.0 4.32 -0.25
PK 6300.0 4.32 -0.5
PK 8000.0 4.32 -0.5
PK 10000.0 4.32 -0.5
PK 12000.0 4.32 -0.25
PK 16000.0 4.32 0.0
PK 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
Frequency Frequency with EQ
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