What we know about the measurement:

Infinity Prelude MTS 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: 90.5dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 26.9Hz (resp. 20.1Hz).
  • Reference level is normalised to 0.4dB 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 7.54 and would be 8.16 with a perfect subwoofer.
      • Details: NBD: ON 0.289, LW 0.245, SP 0.364, PIR 0.258; SM: SP0.882, PIR0.848; LFQ 1.365, LFX 20Hz
    • Tonality (Preference) Score is 8.1 with an EQ and would be 8.72 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.252, LW 0.232, SP 0.271, PIR 0.181; SM: SP0.948, PIR0.951; LFQ 1.365, LFX 20Hz
  • Link to Original review.
Infinity Prelude MTS
AutomaticEQ (IIR)
Set preamp gain to: -2.5dB.
Type Freq Q Gain
3 25.0 2.53 2.67
3 36.0 2.01 -0.49
3 109.0 1.23 -0.59
3 1480.0 0.61 -0.63
3 2168.0 2.94 2.24
3 3177.0 0.81 -1.26
3 6361.0 2.98 -0.75
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These EQ optimise the Harman score and is a good start for far field listening like in your living room.

Infinity Prelude MTS filters_auto_eq

AutomaticEQ

Infinity Prelude MTS filters_eq_full

Target v.s. EQ

Infinity Prelude MTS
Graphic EQ 15 bands
Set preamp gain to: -0.5dB.
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 -0.25
3 160.0 2.14 -0.25
3 250.0 2.14 0.0
3 400.0 2.14 0.0
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 0.0
3 16000.0 2.14 0.5
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These EQ is designed for a 15 bands graphical EQ.

Infinity Prelude MTS
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 -0.25
3 80.0 4.32 -0.25
3 100.0 4.32 -0.25
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 -0.25
3 1000.0 4.32 -0.25
3 1250.0 4.32 -0.25
3 1600.0 4.32 -0.25
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 -0.25
3 6300.0 4.32 -0.25
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 Prelude MTS: comparison between EQs
Infinity Prelude MTS

Comparison betweens various EQs

Infinity Prelude MTS

Improvements made by EQ

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