What we know about the measurement:

Q Acoustics 3030i is a passive bookshelves

  • Quality of the measurement data is low.
  • Origin of the data is Misc.
  • Format of the data is a scanned image .
  • Sensitivity: 74.1dB (avg. 100Hz-1kHz for 2.83V estimated at 1m)
  • -3dB (resp. -6db) point v.s. reference is at 69.0Hz (resp. 52.7Hz).
  • Reference level is normalised to 0.4dB 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 5.17 and would be 7.48 with a perfect subwoofer.
      • Details: NBD: ON 0.425, LW 0.302, SP 0.408, PIR 0.312; SM: SP0.826, PIR0.771; LFQ 0.279, LFX 49Hz
    • Tonality (Preference) Score is 6.58 with an EQ and would be 8.36 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.351, LW 0.246, SP 0.328, PIR 0.221; SM: SP0.928, PIR0.954; LFQ 0.223, LFX 37Hz
  • Link to original Review: asr review. Links to other reviews: tnw review .
Q Acoustics 3030i
AutomaticEQ (IIR)
Set preamp gain to: -4.7dB.
Type Freq Q Gain
3 38.0 1.02 2.99
3 69.0 0.34 2.97
3 139.0 0.61 -3.92
3 1244.0 2.93 -3.61
3 1381.0 1.29 2.21
3 4495.0 1.63 -2.35
3 13186.0 0.77 -1.56
Download

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

Q Acoustics 3030i filters_auto_eq

AutomaticEQ

Q Acoustics 3030i filters_eq_full

Target v.s. EQ

Q Acoustics 3030i
Graphic EQ 15 bands
Set preamp gain to: -0.9dB.
Type Freq Q Gain
3 25.0 2.14 0.0
3 40.0 2.14 0.0
3 63.0 2.14 0.0
3 100.0 2.14 0.0
3 160.0 2.14 0.0
3 250.0 2.14 0.0
3 400.0 2.14 0.0
3 630.0 2.14 0.25
3 1000.0 2.14 0.5
3 1600.0 2.14 0.75
3 2500.0 2.14 0.5
3 4000.0 2.14 -0.25
3 6300.0 2.14 0.0
3 10000.0 2.14 0.0
3 16000.0 2.14 0.25
Download

These EQ is designed for a 15 bands graphical EQ.

Q Acoustics 3030i
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 0.0
3 31.0 4.32 0.0
3 40.0 4.32 0.0
3 50.0 4.32 0.0
3 63.0 4.32 0.0
3 80.0 4.32 0.0
3 100.0 4.32 0.0
3 125.0 4.32 0.0
3 160.0 4.32 0.0
3 200.0 4.32 0.0
3 250.0 4.32 0.0
3 315.0 4.32 0.0
3 400.0 4.32 0.0
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 0.25
3 1250.0 4.32 0.0
3 1600.0 4.32 0.25
3 2000.0 4.32 0.25
3 2500.0 4.32 0.25
3 3150.0 4.32 0.0
3 4000.0 4.32 -0.25
3 5000.0 4.32 -0.25
3 6300.0 4.32 0.0
3 8000.0 4.32 0.0
3 10000.0 4.32 0.0
3 12000.0 4.32 0.0
3 16000.0 4.32 0.0
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

Q Acoustics 3030i: comparison between EQs
Q Acoustics 3030i

Comparison betweens various EQs

Q Acoustics 3030i

Improvements made by EQ

Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
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