What we know about the measurement:

Infinity R263 is a passive floorstanders that cost around 500 USD for a pair.

  • Quality of the measurement data is medium.
  • Origin of the data is Infinity.
  • Format of the data is a scanned image .
  • Sensitivity: 86.6dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 49.5Hz (resp. 38.0Hz).
  • Reference level is normalised to -0.7dB 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 5.88 and would be 7.45 with a perfect subwoofer.
      • Details: NBD: ON 0.358, LW 0.293, SP 0.28, PIR 0.234; SM: SP0.822, PIR0.588; LFQ 1.361, LFX 33Hz
    • Tonality (Preference) Score is 7.19 with an EQ and would be 8.53 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.318, LW 0.248, SP 0.262, PIR 0.193; SM: SP0.964, PIR0.959; LFQ 1.361, LFX 29Hz
Infinity R263
AutomaticEQ (IIR)
Set preamp gain to: -3.0dB.
Type Freq Q Gain
PK 30.0 1.54 2.99
PK 211.0 1.38 0.66
PK 369.0 2.95 1.03
PK 1887.0 2.92 1.87
PK 5347.0 1.25 -1.23
PK 9648.0 2.76 -1.23
PK 16239.0 0.84 -1.79
Download

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

Infinity R263 filters_auto_eq

AutomaticEQ

Infinity R263 filters_eq_full

Target v.s. EQ

Infinity R263
Graphic EQ 15 bands
Set preamp gain to: -0.6dB.
Type Freq Q Gain
PK 25.0 2.14 0.5
PK 40.0 2.14 0.5
PK 63.0 2.14 -0.25
PK 100.0 2.14 0.0
PK 160.0 2.14 -0.25
PK 250.0 2.14 0.0
PK 400.0 2.14 0.0
PK 630.0 2.14 -0.25
PK 1000.0 2.14 -0.25
PK 1600.0 2.14 -0.25
PK 2500.0 2.14 0.0
PK 4000.0 2.14 -0.5
PK 6300.0 2.14 -0.5
PK 10000.0 2.14 -0.75
PK 16000.0 2.14 -0.75
Download

These EQ is designed for a 15 bands graphical EQ.

Infinity R263
Graphic EQ 31 bands
Set preamp gain to: -1.1dB.
Type Freq Q Gain
PK 20.0 4.32 0.0
PK 25.0 4.32 0.75
PK 31.0 4.32 0.75
PK 40.0 4.32 0.75
PK 50.0 4.32 0.75
PK 63.0 4.32 -0.25
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 0.0
PK 250.0 4.32 0.0
PK 315.0 4.32 -0.25
PK 400.0 4.32 0.0
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 -0.25
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 0.25
PK 4000.0 4.32 -0.25
PK 5000.0 4.32 -0.5
PK 6300.0 4.32 -0.25
PK 8000.0 4.32 -0.25
PK 10000.0 4.32 -0.5
PK 12000.0 4.32 -0.25
PK 16000.0 4.32 -0.5
PK 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

Infinity R263: comparison between EQs
Infinity R263

Comparison betweens various EQs

Infinity R263

Improvements made by EQ

Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
;