What we know about the measurement:

Focal Alpha Twin Evo is an active bookshelves that cost around 480 USD each.

  • Quality of the measurement data is low.
  • Origin of the data is Sound and Recording.
  • Format of the data is a scanned image .
  • -3dB (resp. -6db) point v.s. reference is at 28.7Hz (resp. 27.3Hz).
  • Reference level is normalised to 0.8dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 3.5dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 4.68 and would be 5.84 with a perfect subwoofer.
      • Details: NBD: ON 0.564, LW 0.517, SP 0.554, PIR 0.502; SM: SP0.663, PIR0.461; LFQ 1.814, LFX 26Hz
    • Tonality (Preference) Score is 6.82 with an EQ and would be 7.94 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.384, LW 0.32, SP 0.364, PIR 0.294; SM: SP0.911, PIR0.905; LFQ 1.814, LFX 26Hz
  • Link to Original review.
Focal Alpha Twin Evo
AutomaticEQ (IIR)
Set preamp gain to: -1.8dB.
Type Freq Q Gain
3 85.0 0.8 -3.97
3 356.0 1.95 -2.27
3 560.0 2.1 3.0
3 792.0 3.0 -1.96
3 2324.0 2.99 2.11
3 4654.0 0.47 -3.71
3 13652.0 2.91 -3.65
Download

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

Focal Alpha Twin Evo filters_auto_eq

AutomaticEQ

Focal Alpha Twin Evo filters_eq_full

Target v.s. EQ

Focal Alpha Twin Evo
Graphic EQ 15 bands
Set preamp gain to: -0.4dB.
Type Freq Q Gain
3 25.0 2.14 0.5
3 40.0 2.14 -0.25
3 63.0 2.14 -0.5
3 100.0 2.14 -0.75
3 160.0 2.14 -0.25
3 250.0 2.14 -0.25
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 0.0
3 2500.0 2.14 0.0
3 4000.0 2.14 -0.25
3 6300.0 2.14 -0.5
3 10000.0 2.14 -0.25
3 16000.0 2.14 0.0
Download

These EQ is designed for a 15 bands graphical EQ.

Focal Alpha Twin Evo
Graphic EQ 31 bands
Set preamp gain to: -0.2dB.
Type Freq Q Gain
3 20.0 4.32 0.0
3 25.0 4.32 0.25
3 31.0 4.32 0.0
3 40.0 4.32 -0.25
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 -0.25
3 200.0 4.32 -0.25
3 250.0 4.32 -0.25
3 315.0 4.32 -0.25
3 400.0 4.32 -0.25
3 500.0 4.32 0.25
3 630.0 4.32 0.25
3 800.0 4.32 -0.25
3 1000.0 4.32 -0.25
3 1250.0 4.32 0.0
3 1600.0 4.32 0.0
3 2000.0 4.32 0.0
3 2500.0 4.32 0.0
3 3150.0 4.32 -0.25
3 4000.0 4.32 -0.25
3 5000.0 4.32 -0.5
3 6300.0 4.32 -0.5
3 8000.0 4.32 -0.5
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.

Focal Alpha Twin Evo: comparison between EQs
Focal Alpha Twin Evo

Comparison betweens various EQs

Focal Alpha Twin Evo

Improvements made by EQ

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