What we know about the measurement:

LCM Nearfield Monitor 3-D Printed DIY is a passive bookshelves

  • Quality of the measurement data is high.
  • Origin of the data is ErinsAudioCorner.
  • Format of the data is generated by a Klippel NFS .
  • Sensitivity: 90.5dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 38.1Hz (resp. 33.7Hz).
  • Reference level is normalised to 0.3dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 7.1dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-10.0°, 10.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-10.0°, 10.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 3.71 and would be 5.37 with a perfect subwoofer.
      • Details: NBD: ON 0.631, LW 0.567, SP 0.35, PIR 0.346; SM: SP0.609, PIR0.128; LFQ 0.474, LFX 35Hz
    • Tonality (Preference) Score is 5.9 with an EQ and would be 7.47 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.571, LW 0.513, SP 0.335, PIR 0.304; SM: SP0.957, PIR0.917; LFQ 0.427, LFX 33Hz
  • Link to Original review.
LCM Nearfield Monitor 3-D Printed DIY
AutomaticEQ (IIR)
Set preamp gain to: -2.2dB.
Type Freq Q Gain
3 125.0 0.53 -2.19
3 211.0 1.75 1.64
3 344.0 0.72 2.79
3 1642.0 0.91 -1.95
3 3779.0 1.85 -2.47
3 6144.0 2.97 -0.99
3 16239.0 0.86 -3.96
Download

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

LCM Nearfield Monitor 3-D Printed DIY filters_auto_eq

AutomaticEQ

LCM Nearfield Monitor 3-D Printed DIY filters_eq_full

Target v.s. EQ

LCM Nearfield Monitor 3-D Printed DIY
Graphic EQ 15 bands
Set preamp gain to: -0.3dB.
Type Freq Q Gain
3 25.0 2.14 0.0
3 40.0 2.14 0.0
3 63.0 2.14 -0.25
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 0.0
3 1600.0 2.14 -0.5
3 2500.0 2.14 -0.25
3 4000.0 2.14 -0.75
3 6300.0 2.14 -0.5
3 10000.0 2.14 -0.5
3 16000.0 2.14 -1.0
Download

These EQ is designed for a 15 bands graphical EQ.

LCM Nearfield Monitor 3-D Printed DIY
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 0.0
3 31.0 4.32 0.0
3 40.0 4.32 0.0
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 0.25
3 315.0 4.32 0.25
3 400.0 4.32 0.25
3 500.0 4.32 0.0
3 630.0 4.32 0.0
3 800.0 4.32 -0.25
3 1000.0 4.32 0.0
3 1250.0 4.32 -0.25
3 1600.0 4.32 -0.5
3 2000.0 4.32 -0.5
3 2500.0 4.32 -0.25
3 3150.0 4.32 -0.5
3 4000.0 4.32 -0.5
3 5000.0 4.32 -0.25
3 6300.0 4.32 -0.5
3 8000.0 4.32 0.0
3 10000.0 4.32 -0.5
3 12000.0 4.32 -0.25
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.

LCM Nearfield Monitor 3-D Printed DIY: comparison between EQs
LCM Nearfield Monitor 3-D Printed DIY

Comparison betweens various EQs

LCM Nearfield Monitor 3-D Printed DIY

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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