What we know about the measurement:

Mcintosh XR50 is a passive bookshelves that cost around 4000 USD for a pair.

  • Quality of the measurement data is high.
  • Origin of the data is ErinsAudioCorner.
  • Format of the data is generated by a Klippel NFS .
  • Sensitivity: 79.8dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 43.9Hz (resp. 39.6Hz).
  • Reference level is normalised to 0.0dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.9dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-80.0°, 80.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-20.0°, 20.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 4.55 and would be 6.36 with a perfect subwoofer.
      • Details: NBD: ON 0.52, LW 0.404, SP 0.326, PIR 0.31; SM: SP0.717, PIR0.388; LFQ 0.643, LFX 38Hz
    • Tonality (Preference) Score is 6.63 with an EQ and would be 8.29 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.438, LW 0.264, SP 0.241, PIR 0.175; SM: SP0.961, PIR0.958; LFQ 0.643, LFX 35Hz
  • Link to Original review.
Mcintosh XR50
AutomaticEQ (IIR)
Set preamp gain to: -2.8dB.
Type Freq Q Gain
5 56.0 0.91 2.99
3 84.0 1.17 -2.86
3 207.0 2.11 1.37
3 342.0 1.36 -0.82
3 965.0 1.91 1.07
3 2014.0 2.76 1.8
3 4202.0 2.97 1.61
3 7417.0 2.01 -1.23
3 12662.0 0.33 -2.35
Download

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

Mcintosh XR50 filters_auto_eq

AutomaticEQ

Mcintosh XR50 filters_eq_full

Target v.s. EQ

Mcintosh XR50
Graphic EQ 15 bands
Set preamp gain to: -0.3dB.
Type Freq Q Gain
3 25.0 2.14 0.25
3 40.0 2.14 0.25
3 63.0 2.14 -0.5
3 100.0 2.14 -0.5
3 160.0 2.14 -0.25
3 250.0 2.14 -0.25
3 400.0 2.14 -0.25
3 630.0 2.14 0.0
3 1000.0 2.14 0.0
3 1600.0 2.14 0.0
3 2500.0 2.14 0.0
3 4000.0 2.14 -0.25
3 6300.0 2.14 -0.75
3 10000.0 2.14 -0.75
3 16000.0 2.14 -0.5
Download

These EQ is designed for a 15 bands graphical EQ.

Mcintosh XR50
Graphic EQ 31 bands
Set preamp gain to: -0.3dB.
Type Freq Q Gain
3 20.0 4.32 0.0
3 25.0 4.32 0.25
3 31.0 4.32 0.25
3 40.0 4.32 0.25
3 50.0 4.32 0.0
3 63.0 4.32 -0.25
3 80.0 4.32 -0.5
3 100.0 4.32 -0.5
3 125.0 4.32 -0.25
3 160.0 4.32 -0.25
3 200.0 4.32 0.0
3 250.0 4.32 -0.25
3 315.0 4.32 -0.25
3 400.0 4.32 -0.25
3 500.0 4.32 -0.25
3 630.0 4.32 -0.25
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 -0.25
3 3150.0 4.32 -0.25
3 4000.0 4.32 -0.25
3 5000.0 4.32 -0.5
3 6300.0 4.32 -0.75
3 8000.0 4.32 -1.0
3 10000.0 4.32 -0.75
3 12000.0 4.32 -0.75
3 16000.0 4.32 -0.75
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

Mcintosh XR50: comparison between EQs
Mcintosh XR50

Comparison betweens various EQs

Mcintosh XR50

Improvements made by EQ

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