What we know about the measurement:

Focal Sopra 1 is a passive bookshelves that cost around 10000 USD for a pair.

  • Quality of the measurement data is low.
  • Origin of the data is Misc.
  • Format of the data is a scanned image .
  • Sensitivity: 83.8dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 201.4Hz (resp. 201.4Hz).
  • Reference level is normalised to 0.5dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 1.2dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 1.21 and would be 6.14 with a perfect subwoofer.
      • Details: NBD: ON 0.428, LW 0.378, SP 0.41, PIR 0.375; SM: SP0.52, PIR0.278; LFQ 10.0, LFX 201Hz
    • Tonality (Preference) Score is 2.2 with an EQ and would be 7.12 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.401, LW 0.333, SP 0.345, PIR 0.287; SM: SP0.737, PIR0.56; LFQ 10.0, LFX 201Hz
  • Link to Original review.
Focal Sopra 1
AutomaticEQ (IIR)
Set preamp gain to: -1.0dB.
Type Freq Q Gain
3 134.0 2.99 -3.0
3 8804.0 1.14 -2.19
3 929.0 0.52 1.03
3 2233.0 3.0 0.79
3 227.0 3.0 -0.76
3 15721.0 2.98 0.76
3 4478.0 2.08 -0.77
3 10971.0 2.98 -0.76
3 1515.0 3.0 -0.75
Download

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

Focal Sopra 1 filters_auto_eq

AutomaticEQ

Focal Sopra 1 filters_eq_full

Target v.s. EQ

Focal Sopra 1
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 0.25
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 -0.25
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 Sopra 1
Graphic EQ 31 bands
Set preamp gain to: -0.4dB.
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 0.0
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 0.25
3 1000.0 4.32 0.25
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 -0.25
3 5000.0 4.32 -0.25
3 6300.0 4.32 -0.25
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 Sopra 1: comparison between EQs
Focal Sopra 1

Comparison betweens various EQs

Focal Sopra 1

Improvements made by EQ

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