What we know about the measurement:

Dennis Murphy Affordable Accuracy Monitor is a passive bookshelves

  • Quality of the measurement data is high.
  • Origin of the data is ASR.
  • Format of the data is generated by a Klippel NFS .
  • Sensitivity: 83.2dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 71.8Hz (resp. 63.0Hz).
  • Reference level is normalised to -0.2dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 1.9dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-80.0°, 70.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-30.0°, 20.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 5.18 and would be 7.93 with a perfect subwoofer.
      • Details: NBD: ON 0.356, LW 0.299, SP 0.382, PIR 0.292; SM: SP0.915, PIR0.865; LFQ 0.288, LFX 62Hz
    • Tonality (Preference) Score is 6.03 with an EQ and would be 8.64 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.295, LW 0.22, SP 0.271, PIR 0.172; SM: SP0.955, PIR0.954; LFQ 0.288, LFX 58Hz
  • Link to Original review.
Dennis Murphy Affordable Accuracy Monitor
AutomaticEQ (IIR)
Set preamp gain to: -3.0dB.
Type Freq Q Gain
5 129.0 0.82 2.58
3 342.0 2.99 1.21
3 646.0 2.53 2.19
3 817.0 1.86 -1.19
3 2153.0 1.0 0.8
3 3110.0 2.64 -1.2
3 3676.0 2.31 0.63
3 7669.0 2.94 2.04
3 14473.0 1.04 2.94
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These EQ optimise the Harman score and is a good start for far field listening like in your living room.

Dennis Murphy Affordable Accuracy Monitor filters_auto_eq

AutomaticEQ

Dennis Murphy Affordable Accuracy Monitor filters_eq_full

Target v.s. EQ

Dennis Murphy Affordable Accuracy Monitor
flipflop@ASR (IIR)
Set preamp gain to: -1.1dB.
Type Freq Q Gain
3 348.0 9.0 1.1
3 536.0 20.0 0.8
3 617.0 8.0 1.1
3 778.0 11.0 -0.5
3 935.0 4.0 -1.1
3 1253.0 7.0 -0.5
3 1578.0 12.0 -0.8
3 1771.0 8.0 -0.6
3 2074.0 18.0 -0.9
3 2380.0 20.0 -0.6
3 2800.0 7.0 -0.6
3 3150.0 5.2 -1.6
3 3540.0 8.0 -0.9
3 4140.0 7.5 -0.7
3 4831.0 3.5 -1.1
3 6640.0 5.0 -0.8
3 7620.0 9.0 0.9
3 8600.0 10.0 -0.7
3 10600.0 5.0 -0.8
3 14500.0 2.8 1.1
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These EQ is designed by ASR member flipflop.

Dennis Murphy Affordable Accuracy Monitor
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 0.0
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 0.0
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.

Dennis Murphy Affordable Accuracy Monitor
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 0.25
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 0.0
3 630.0 4.32 0.25
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 0.0
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 0.0
3 6300.0 4.32 0.0
3 8000.0 4.32 0.25
3 10000.0 4.32 0.0
3 12000.0 4.32 0.25
3 16000.0 4.32 0.75
3 20000.0 4.32 0.0
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These EQ is designed for a 31 bands graphical EQ.

Dennis Murphy Affordable Accuracy Monitor: comparison between EQs
Dennis Murphy Affordable Accuracy Monitor

Comparison betweens various EQs

Dennis Murphy Affordable Accuracy Monitor

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
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