What we know about the measurement:

Presonus Eris E3.5 is an active bookshelves that cost around 110 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 76.9Hz (resp. 69.6Hz).
  • Reference level is normalised to 0.7dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 6.0dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-60.0°, 60.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-30.0°, 20.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 1.39 and would be 4.33 with a perfect subwoofer.
      • Details: NBD: ON 0.731, LW 0.611, SP 0.501, PIR 0.549; SM: SP0.136, PIR0.048; LFQ 0.181, LFX 69Hz
    • Tonality (Preference) Score is 5.31 with an EQ and would be 8.16 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.382, LW 0.265, SP 0.271, PIR 0.235; SM: SP0.961, PIR0.921; LFQ 0.205, LFX 66Hz
  • Link to original Review: eac review. Links to other reviews: asr review .
Presonus Eris E3.5
AutomaticEQ (IIR)
Set preamp gain to: -4.3dB.
Type Freq Q Gain
3 117.0 1.29 -3.0
3 253.0 0.85 2.86
3 366.0 0.78 2.24
3 625.0 2.89 2.65
3 1648.0 2.96 -3.0
3 2226.0 2.62 2.81
3 4345.0 0.27 -2.79
3 6709.0 1.42 -1.75
3 13537.0 0.34 -1.96
Download

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

Presonus Eris E3.5 filters_auto_eq

AutomaticEQ

Presonus Eris E3.5 filters_eq_full

Target v.s. EQ

Presonus Eris E3.5
Graphic EQ 15 bands
Set preamp gain to: -0.6dB.
Type Freq Q Gain
3 25.0 2.14 0.25
3 40.0 2.14 0.25
3 63.0 2.14 0.25
3 100.0 2.14 -0.5
3 160.0 2.14 0.0
3 250.0 2.14 0.5
3 400.0 2.14 0.5
3 630.0 2.14 0.25
3 1000.0 2.14 -0.25
3 1600.0 2.14 -0.75
3 2500.0 2.14 -0.25
3 4000.0 2.14 -0.75
3 6300.0 2.14 -1.0
3 10000.0 2.14 -1.0
3 16000.0 2.14 -0.75
Download

These EQ is designed for a 15 bands graphical EQ.

Presonus Eris E3.5
Graphic EQ 31 bands
Set preamp gain to: -0.7dB.
Type Freq Q Gain
3 20.0 4.32 0.0
3 25.0 4.32 0.25
3 31.0 4.32 0.25
3 40.0 4.32 0.25
3 50.0 4.32 0.25
3 63.0 4.32 0.25
3 80.0 4.32 0.25
3 100.0 4.32 -0.25
3 125.0 4.32 -0.25
3 160.0 4.32 0.0
3 200.0 4.32 0.25
3 250.0 4.32 0.5
3 315.0 4.32 0.5
3 400.0 4.32 0.25
3 500.0 4.32 0.25
3 630.0 4.32 0.25
3 800.0 4.32 0.0
3 1000.0 4.32 -0.25
3 1250.0 4.32 -0.25
3 1600.0 4.32 -0.75
3 2000.0 4.32 -0.25
3 2500.0 4.32 -0.25
3 3150.0 4.32 -0.5
3 4000.0 4.32 -0.5
3 5000.0 4.32 -0.5
3 6300.0 4.32 -0.75
3 8000.0 4.32 -0.5
3 10000.0 4.32 -0.5
3 12000.0 4.32 -0.5
3 16000.0 4.32 -0.5
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

Presonus Eris E3.5: comparison between EQs
Presonus Eris E3.5

Comparison betweens various EQs

Presonus Eris E3.5

Improvements made by 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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