What we know about the measurement:

Infinity RC252 is a passive center

  • Quality of the measurement data is medium.
  • Origin of the data is Infinity.
  • Format of the data is a scanned image .
  • Sensitivity: 85.9dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 87.2Hz (resp. 61.7Hz).
  • Reference level is normalised to 0.3dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.2dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 5.22 and would be 7.91 with a perfect subwoofer.
      • Details: NBD: ON 0.35, LW 0.252, SP 0.272, PIR 0.236; SM: SP0.872, PIR0.777; LFQ 1.209, LFX 60Hz
    • Tonality (Preference) Score is 6.37 with an EQ and would be 8.66 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.259, LW 0.183, SP 0.244, PIR 0.185; SM: SP0.957, PIR0.941; LFQ 1.209, LFX 49Hz
  • Link to Original review.
Infinity RC252
AutomaticEQ (IIR)
Set preamp gain to: -2.9dB.
Type Freq Q Gain
3 51.0 0.66 2.97
3 117.0 2.2 -1.41
3 190.0 2.93 0.68
3 487.0 2.07 0.56
3 2168.0 2.99 -1.42
3 11085.0 0.84 1.52
3 11882.0 0.26 -3.1
Download

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

Infinity RC252 filters_auto_eq

AutomaticEQ

Infinity RC252 filters_eq_full

Target v.s. EQ

Infinity RC252
Graphic EQ 15 bands
Set preamp gain to: -0.7dB.
Type Freq Q Gain
3 25.0 2.14 0.5
3 40.0 2.14 0.5
3 63.0 2.14 0.5
3 100.0 2.14 0.25
3 160.0 2.14 0.0
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 -0.25
3 1600.0 2.14 0.25
3 2500.0 2.14 0.0
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 -0.5
Download

These EQ is designed for a 15 bands graphical EQ.

Infinity RC252
Graphic EQ 31 bands
Set preamp gain to: -0.8dB.
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 0.5
3 80.0 4.32 0.5
3 100.0 4.32 0.25
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 0.25
3 315.0 4.32 0.25
3 400.0 4.32 0.0
3 500.0 4.32 0.0
3 630.0 4.32 0.25
3 800.0 4.32 0.0
3 1000.0 4.32 -0.25
3 1250.0 4.32 0.0
3 1600.0 4.32 0.25
3 2000.0 4.32 0.0
3 2500.0 4.32 -0.25
3 3150.0 4.32 -0.25
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 -0.25
3 10000.0 4.32 -0.25
3 12000.0 4.32 -0.25
3 16000.0 4.32 -0.5
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

Infinity RC252: comparison between EQs
Infinity RC252

Comparison betweens various EQs

Infinity RC252

Improvements made by EQ

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