What we know about the measurement:

Monoprice MM-3 is an active bookshelves that cost around 160 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 .
  • -3dB (resp. -6db) point v.s. reference is at 62.3Hz (resp. 50.5Hz).
  • Reference level is normalised to 0.7dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 4.5dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-40.0°, 50.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-20.0°, 40.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 3.19 and would be 5.61 with a perfect subwoofer.
      • Details: NBD: ON 0.421, LW 0.371, SP 0.453, PIR 0.407; SM: SP0.433, PIR0.085; LFQ 0.671, LFX 52Hz
    • Tonality (Preference) Score is 6.31 with an EQ and would be 8.59 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.247, LW 0.185, SP 0.275, PIR 0.208; SM: SP0.947, PIR0.925; LFQ 0.671, LFX 49Hz
  • Link to Original review.
  • Note: port is stuffed for this set of measurements.
Monoprice MM-3
AutomaticEQ (IIR)
Set preamp gain to: -2.3dB.
Type Freq Q Gain
3 52.0 1.19 2.99
3 125.0 0.83 -2.83
3 2023.0 2.71 3.0
3 3177.0 2.97 -2.7
3 4654.0 1.98 -3.15
3 6818.0 1.9 -1.56
3 14633.0 0.48 -5.75
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These EQ optimise the Harman score and is a good start for far field listening like in your living room.

Monoprice MM-3 filters_auto_eq

AutomaticEQ

Monoprice MM-3 filters_eq_full

Target v.s. EQ

Monoprice MM-3
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 0.25
3 100.0 2.14 -0.25
3 160.0 2.14 -0.25
3 250.0 2.14 -0.25
3 400.0 2.14 0.0
3 630.0 2.14 -0.25
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 -0.75
3 6300.0 2.14 -0.75
3 10000.0 2.14 -0.75
3 16000.0 2.14 -0.75
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These EQ is designed for a 15 bands graphical EQ.

Monoprice MM-3
Graphic EQ 31 bands
Set preamp gain to: -0.4dB.
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 0.25
3 63.0 4.32 0.25
3 80.0 4.32 0.0
3 100.0 4.32 -0.25
3 125.0 4.32 -0.5
3 160.0 4.32 -0.25
3 200.0 4.32 -0.25
3 250.0 4.32 -0.25
3 315.0 4.32 -0.25
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 0.5
3 2500.0 4.32 0.0
3 3150.0 4.32 -0.5
3 4000.0 4.32 -0.75
3 5000.0 4.32 -0.75
3 6300.0 4.32 -0.75
3 8000.0 4.32 -0.75
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
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These EQ is designed for a 31 bands graphical EQ.

Monoprice MM-3: comparison between EQs
Monoprice MM-3

Comparison betweens various EQs

Monoprice MM-3

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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