What we know about the measurement:

Grimani Systems Alpha is an active inwall

  • Quality of the measurement data is low.
  • Origin of the data is Misc.
  • Format of the data is a scanned image .
  • -3dB (resp. -6db) point v.s. reference is at 88.4Hz (resp. 81.4Hz).
  • Reference level is normalised to 0.3dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 1.7dB over the same frequency range.
  • Tonality (Preference) Score
    • Note: The tonality (Preference) score does not make sense for inwall speakers. Don't give too much credits to the value.
    • Tonality (Preference) Score is 1.87 and would be 5.29 with a perfect subwoofer.
      • Details: NBD: ON 0.452, LW 0.405, SP 0.506, PIR 0.426; SM: SP0.197, PIR0.007; LFQ 3.348, LFX 90Hz
    • Tonality (Preference) Score is 4.18 with an EQ and would be 7.54 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.397, LW 0.372, SP 0.462, PIR 0.371; SM: SP0.82, PIR0.843; LFQ 3.348, LFX 87Hz
  • Link to Original review.
Grimani Systems Alpha
AutomaticEQ (IIR)
Set preamp gain to: -2.3dB.
Type Freq Q Gain
PK 109.0 2.99 -1.09
PK 125.0 3.0 2.91
PK 976.0 1.52 1.12
PK 3405.0 0.33 -1.68
PK 5347.0 2.39 -1.32
PK 9989.0 2.95 -1.81
PK 14633.0 1.08 -4.53
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This EQ optimise the Harman score and is a good start for far field listening like in your living room.
Grimani Systems Alpha
Graphic EQ 15 bands
Set preamp gain to: -0.6dB.
Type Freq Q Gain
PK 25.0 2.14 0.0
PK 40.0 2.14 0.0
PK 63.0 2.14 0.5
PK 100.0 2.14 0.25
PK 160.0 2.14 0.25
PK 250.0 2.14 0.5
PK 400.0 2.14 0.25
PK 630.0 2.14 0.25
PK 1000.0 2.14 0.5
PK 1600.0 2.14 0.0
PK 2500.0 2.14 0.0
PK 4000.0 2.14 -0.25
PK 6300.0 2.14 -0.25
PK 10000.0 2.14 -0.5
PK 16000.0 2.14 -0.5
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This EQ is designed for a 15 bands graphical EQ.
Grimani Systems Alpha
Graphic EQ 31 bands
Set preamp gain to: -0.7dB.
Type Freq Q Gain
PK 20.0 4.32 0.0
PK 25.0 4.32 0.0
PK 31.0 4.32 0.0
PK 40.0 4.32 0.0
PK 50.0 4.32 0.5
PK 63.0 4.32 0.5
PK 80.0 4.32 0.5
PK 100.0 4.32 0.25
PK 125.0 4.32 0.5
PK 160.0 4.32 0.25
PK 200.0 4.32 0.25
PK 250.0 4.32 0.25
PK 315.0 4.32 0.25
PK 400.0 4.32 0.25
PK 500.0 4.32 0.0
PK 630.0 4.32 0.25
PK 800.0 4.32 0.25
PK 1000.0 4.32 0.25
PK 1250.0 4.32 0.0
PK 1600.0 4.32 0.0
PK 2000.0 4.32 0.0
PK 2500.0 4.32 -0.25
PK 3150.0 4.32 -0.25
PK 4000.0 4.32 -0.25
PK 5000.0 4.32 -0.25
PK 6300.0 4.32 -0.25
PK 8000.0 4.32 -0.5
PK 10000.0 4.32 -0.5
PK 12000.0 4.32 -0.5
PK 16000.0 4.32 -0.5
PK 20000.0 4.32 0.0
Download
This EQ is designed for a 31 bands graphical EQ.
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)
Grimani Systems Alpha: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
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