What we know about the measurement:

Donner Dyna 3 is an active bookshelves that cost around 90 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 85.0Hz (resp. 77.6Hz).
  • Reference level is normalised to -1.0dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 8.2dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-10.0°, 10.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-10.0°, 30.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is -0.62 and would be 2.69 with a perfect subwoofer.
      • Details: NBD: ON 1.11, LW 0.953, SP 0.737, PIR 0.778; SM: SP0.362, PIR0.042; LFQ 1.005, LFX 84Hz
    • Tonality (Preference) Score is 3.26 with an EQ and would be 6.5 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.728, LW 0.559, SP 0.425, PIR 0.422; SM: SP0.928, PIR0.818; LFQ 1.005, LFX 82Hz
  • Link to original Review: eac review. Links to other reviews: asr review .
Donner Dyna 3
AutomaticEQ (IIR)
Set preamp gain to: -2.8dB.
Type Freq Q Gain
3 169.0 1.3 -3.0
3 432.0 1.57 2.78
3 1067.0 3.0 2.98
3 1704.0 2.5 -2.87
3 2380.0 3.0 -2.95
3 3555.0 1.21 3.0
3 5870.0 2.95 -2.75
3 9691.0 0.75 -2.99
3 13092.0 0.49 -2.99
Download

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

Donner Dyna 3 filters_auto_eq

AutomaticEQ

Donner Dyna 3 filters_eq_full

Target v.s. EQ

Donner Dyna 3
Graphic EQ 15 bands
Set preamp gain to: -0.7dB.
Type Freq Q Gain
3 25.0 2.14 0.5
3 40.0 2.14 0.5
3 63.0 2.14 0.5
3 100.0 2.14 0.0
3 160.0 2.14 -0.75
3 250.0 2.14 -0.25
3 400.0 2.14 0.25
3 630.0 2.14 0.0
3 1000.0 2.14 0.5
3 1600.0 2.14 -0.5
3 2500.0 2.14 -0.5
3 4000.0 2.14 0.5
3 6300.0 2.14 -0.75
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.

Donner Dyna 3
Graphic EQ 31 bands
Set preamp gain to: -0.8dB.
Type Freq Q Gain
3 20.0 4.32 0.0
3 25.0 4.32 0.5
3 31.0 4.32 0.5
3 40.0 4.32 0.5
3 50.0 4.32 0.5
3 63.0 4.32 0.5
3 80.0 4.32 0.5
3 100.0 4.32 0.0
3 125.0 4.32 -0.5
3 160.0 4.32 -0.75
3 200.0 4.32 -0.5
3 250.0 4.32 -0.25
3 315.0 4.32 0.0
3 400.0 4.32 0.25
3 500.0 4.32 0.25
3 630.0 4.32 0.0
3 800.0 4.32 0.0
3 1000.0 4.32 0.25
3 1250.0 4.32 0.0
3 1600.0 4.32 -0.5
3 2000.0 4.32 -0.5
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 -0.25
3 6300.0 4.32 -0.75
3 8000.0 4.32 -0.75
3 10000.0 4.32 -0.75
3 12000.0 4.32 -1.0
3 16000.0 4.32 -0.75
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

Donner Dyna 3: comparison between EQs
Donner Dyna 3

Comparison betweens various EQs

Donner Dyna 3

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
Frequency Frequency with EQ
;