What we know about the measurement:

Alcons Audio QRP20 120x15 is a passive columns

  • Quality of the measurement data is high.
  • Origin of the data is Alcons Audio.
  • Format of the data is a GLL file .
  • -3dB (resp. -6db) point v.s. reference is at 90.0Hz (resp. 85.0Hz).
  • Reference level is normalised to -0.2dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.3dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 3.53 and would be 6.84 with a perfect subwoofer.
      • Details: NBD: ON 0.441, LW 0.449, SP 0.546, PIR 0.49; SM: SP0.837, PIR0.742; LFQ 1.249, LFX 84Hz
    • Tonality (Preference) Score is 4.98 with an EQ and would be 8.34 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.258, LW 0.222, SP 0.375, PIR 0.265; SM: SP0.931, PIR0.905; LFQ 1.249, LFX 87Hz
  • Link to original Review: psw review. Links to other reviews: axp review .
  • Vendor specifications:
    • Dispersion: 120° horizontal and 15° vertical.
    • Sensitivity 97 dB
    • Impedance 4 Ohm
    • SPL
      • peak: 131 dB
    • Size
      • Width 150mm
      • Height 742mm
      • Depth 150mm
    • Weight 12kg
Alcons Audio QRP20 120x15
AutomaticEQ (IIR)
Set preamp gain to: -2.9dB.
Type Freq Q Gain
PK 125.0 1.27 -2.99
PK 404.0 0.56 2.73
PK 817.0 2.57 1.97
PK 1180.0 0.5 -2.21
PK 2380.0 2.2 2.61
PK 4064.0 2.86 2.27
PK 5310.0 2.35 1.95
PK 8766.0 2.91 2.59
PK 13997.0 1.07 0.53
Download
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
Alcons Audio QRP20 120x15
Graphic EQ 15 bands
Set preamp gain to: -0.3dB.
Type Freq Q Gain
PK 25.0 2.14 0.25
PK 40.0 2.14 0.25
PK 63.0 2.14 0.25
PK 100.0 2.14 -0.25
PK 160.0 2.14 -0.25
PK 250.0 2.14 0.25
PK 400.0 2.14 0.25
PK 630.0 2.14 0.25
PK 1000.0 2.14 0.0
PK 1600.0 2.14 -0.25
PK 2500.0 2.14 0.25
PK 4000.0 2.14 0.25
PK 6300.0 2.14 0.25
PK 10000.0 2.14 0.25
PK 16000.0 2.14 0.25
Download
This EQ is designed for a 15 bands graphical EQ.
Alcons Audio QRP20 120x15
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 0.25
PK 31.0 4.32 0.25
PK 40.0 4.32 0.25
PK 50.0 4.32 0.25
PK 63.0 4.32 0.25
PK 80.0 4.32 0.25
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 0.0
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 0.25
PK 630.0 4.32 0.0
PK 800.0 4.32 0.25
PK 1000.0 4.32 0.0
PK 1250.0 4.32 -0.25
PK 1600.0 4.32 -0.25
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 0.5
PK 5000.0 4.32 0.5
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 0.25
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)
Alcons Audio QRP20 120x15: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
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