What we know about the measurement:

Audio Engine A2+ is an active bookshelves that cost around 269 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 105.5Hz (resp. 82.8Hz).
  • Reference level is normalised to 0.5dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 3.8dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-40.0°, 40.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-20.0°, 30.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 1.91 and would be 5.23 with a perfect subwoofer.
      • Details: NBD: ON 0.507, LW 0.434, SP 0.455, PIR 0.438; SM: SP0.492, PIR0.054; LFQ 0.323, LFX 85Hz
    • Tonality (Preference) Score is 5.47 with an EQ and would be 8.08 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.345, LW 0.249, SP 0.333, PIR 0.279; SM: SP0.918, PIR0.905; LFQ 0.291, LFX 58Hz
  • Link to original Review: eac review. Links to other reviews: yt review .
  • Vendor specifications:
    • Size
      • Width 106mm
      • Height 159mm
      • Depth 167mm
    • Weight 1.6kg
Audio Engine A2+
AutomaticEQ (IIR)
Set preamp gain to: -3.0dB.
Type Freq Q Gain
PK 88.0 0.64 2.99
PK 155.0 1.45 -3.06
PK 219.0 0.83 -4.38
PK 279.0 0.26 2.58
PK 1010.0 2.84 2.39
PK 2245.0 0.97 -2.8
PK 15150.0 0.27 -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.

Audio Engine A2+ filters_auto_eq

AutomaticEQ

Audio Engine A2+ filters_eq_full

Target v.s. 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
Frequency Frequency with EQ
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