What we know about the measurement:

Mackie CR4 is an active bookshelves that cost around 100 USD each.

  • Quality of the measurement data is low.
  • Origin of the data is Misc.
  • Format of the data is a set of 36 horizontal and 36 vertical measurements .
  • -3dB (resp. -6db) point v.s. reference is at 67.3Hz (resp. 62.6Hz).
  • Reference level is normalised to 0.5dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 3.9dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 2.5 and would be 5.24 with a perfect subwoofer.
      • Details: NBD: ON 0.639, LW 0.598, SP 0.469, PIR 0.497; SM: SP0.642, PIR0.274; LFQ 0.074, LFX 62Hz
    • Tonality (Preference) Score is 5.44 with an EQ and would be 8.07 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.341, LW 0.317, SP 0.326, PIR 0.273; SM: SP0.933, PIR0.886; LFQ 0.074, LFX 59Hz
  • Link to original Review: asr review. .
Mackie CR4
AutomaticEQ (IIR)
Set preamp gain to: -2.6dB.
Type Freq Q Gain
PK 54.0 0.82 2.93
PK 95.0 1.65 -2.86
PK 134.0 1.44 -3.39
PK 579.0 1.71 2.76
PK 1532.0 3.0 -2.85
PK 3912.0 2.13 -2.89
PK 12736.0 0.61 -5.11
Download
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
Mackie CR4
AutomaticEQ LW (IIR)
Set preamp gain to: -2.3dB.
Type Freq Q Gain
PK 65.0 2.99 3.0
PK 105.0 1.12 -3.63
PK 144.0 1.99 -1.62
PK 560.0 1.51 2.51
PK 1532.0 2.99 -2.74
PK 3779.0 2.08 -3.32
PK 12736.0 0.89 -4.27
Download
This EQ optimise for a flat listening window and is a good start for near field listening like on your desk.
Improvement made by adding the above EQ
EQ
AutoEQ
Target v.s. EQ
Target v.s. EQ
Histogram of errors
On Axis (fullrange)
Listening Window (fullrange)
Predicted In-Room Response (fullrange)
Mackie CR4: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
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