What we know about the measurement:

Infinity Primus 360 is a passive floorstanders

  • Quality of the measurement data is medium.
  • Origin of the data is Infinity.
  • Format of the data is a scanned image .
  • Sensitivity: 88.1dB (avg. 100Hz-1kHz for 2.83V estimated at 1m)
  • -3dB (resp. -6db) point v.s. reference is at 50.9Hz (resp. 36.8Hz).
  • Reference level is normalised to 0.4dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 1.8dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 6.17 and would be 7.97 with a perfect subwoofer.
      • Details: NBD: ON 0.363, LW 0.31, SP 0.295, PIR 0.274; SM: SP0.924, PIR0.87; LFQ 1.244, LFX 38Hz
    • Tonality (Preference) Score is 7.5 with an EQ and would be 8.79 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.249, LW 0.21, SP 0.229, PIR 0.168; SM: SP0.964, PIR0.962; LFQ 1.173, LFX 28Hz
  • Link to Original review.
Infinity Primus 360
AutomaticEQ (IIR)
Set preamp gain to: -4.7dB.
Type Freq Q Gain
3 27.0 0.7 2.72
3 54.0 0.25 2.86
3 92.0 1.06 -5.85
3 344.0 2.97 -2.29
3 976.0 1.77 -0.83
3 2670.0 2.97 -1.17
3 8694.0 1.0 -1.77
Download

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

Infinity Primus 360 filters_auto_eq

AutomaticEQ

Infinity Primus 360 filters_eq_full

Target v.s. EQ

Infinity Primus 360
Graphic EQ 15 bands
Set preamp gain to: -0.6dB.
Type Freq Q Gain
3 25.0 2.14 0.5
3 40.0 2.14 0.5
3 63.0 2.14 0.0
3 100.0 2.14 -0.5
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 -0.25
3 6300.0 2.14 -0.25
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.

Infinity Primus 360
Graphic EQ 31 bands
Set preamp gain to: -0.7dB.
Type Freq Q Gain
3 20.0 4.32 0.0
3 25.0 4.32 0.5
3 31.0 4.32 0.5
3 40.0 4.32 0.5
3 50.0 4.32 0.5
3 63.0 4.32 0.0
3 80.0 4.32 -0.25
3 100.0 4.32 -0.5
3 125.0 4.32 -0.25
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 0.0
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 0.0
3 1600.0 4.32 0.0
3 2000.0 4.32 0.25
3 2500.0 4.32 0.0
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 0.0
3 8000.0 4.32 0.0
3 10000.0 4.32 0.0
3 12000.0 4.32 0.0
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.

Infinity Primus 360: comparison between EQs
Infinity Primus 360

Comparison betweens various EQs

Infinity Primus 360

Improvements made by EQ

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