What we know about the measurement:

Donner Dyna 4 is an active bookshelves that cost around 90 USD for a pair.

  • Quality of the measurement data is high.
  • Origin of the data is ASR.
  • Format of the data is generated by a Klippel NFS .
  • -3dB (resp. -6db) point v.s. reference is at 67.4Hz (resp. 58.6Hz).
  • Reference level is normalised to -0.3dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.9dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 2.57 and would be 5.32 with a perfect subwoofer.
      • Details: NBD: ON 0.631, LW 0.586, SP 0.542, PIR 0.533; SM: SP0.609, PIR0.348; LFQ 0.588, LFX 62Hz
    • Tonality (Preference) Score is 5.49 with an EQ and would be 8.01 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.409, LW 0.323, SP 0.328, PIR 0.276; SM: SP0.953, PIR0.936; LFQ 0.588, LFX 55Hz
  • Link to original Review: asr review. .
Donner Dyna 4
AutomaticEQ (IIR)
Set preamp gain to: -1.9dB.
Type Freq Q Gain
PK 58.0 1.59 2.99
PK 105.0 1.76 -2.94
PK 160.0 0.95 -4.03
PK 666.0 1.41 2.2
PK 3525.0 1.76 2.98
PK 5347.0 0.25 -1.69
PK 7834.0 1.07 -5.15
Download
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
Donner Dyna 4
AutomaticEQ LW (IIR)
Set preamp gain to: -2.5dB.
Type Freq Q Gain
PK 121.0 1.65 -2.95
PK 187.0 0.93 -2.98
PK 691.0 1.35 2.25
PK 2153.0 3.26 -1.55
PK 3325.0 1.88 2.98
PK 7417.0 1.71 -2.99
PK 9372.0 1.66 -2.82
Download
This EQ optimise for a flat listening window and is a good start for near field listening like on your desk.
Donner Dyna 4
AutomaticEQ Score (IIR)
Set preamp gain to: -2.1dB.
Type Freq Q Gain
PK 148.0 1.02 -5.13
PK 418.0 3.77 -0.54
PK 646.0 1.15 1.98
PK 2380.0 4.01 -3.42
PK 3325.0 1.37 3.09
PK 6709.0 1.85 -3.18
PK 8766.0 1.22 -3.82
Download
Donner Dyna 4
maiky76@ASR LW (IIR)
Set preamp gain to: -4.0dB.
Type Freq Q Gain
HP 46.48 1.15 0.0
PK 130.18 1.09 -5.22
PK 707.24 1.29 3.01
PK 2311.54 2.83 -1.72
PK 3186.42 1.82 4.53
PK 7334.05 1.87 -3.95
PK 9662.85 4.47 -2.18
Download
This EQ is designed by ASR member maiky76. This EQ optimise for a flat listening window and is a good start for near field listening like on your desk.
Donner Dyna 4
maiky76@ASR (IIR)
Set preamp gain to: -2.5dB.
Type Freq Q Gain
HP 45.48 1.15 0.0
PK 130.64 0.84 -5.02
PK 661.91 1.22 2.32
PK 2382.29 4.03 -2.99
PK 3331.87 1.68 3.44
PK 7287.37 1.49 -5.62
Download
This EQ is designed by ASR member maiky76. This EQ optimise the Harman score and is a good start for far field listening like in your living room.
Donner Dyna 4
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 -0.5
PK 160.0 2.14 -0.5
PK 250.0 2.14 -0.25
PK 400.0 2.14 0.0
PK 630.0 2.14 0.25
PK 1000.0 2.14 0.25
PK 1600.0 2.14 0.0
PK 2500.0 2.14 0.0
PK 4000.0 2.14 0.25
PK 6300.0 2.14 -0.5
PK 10000.0 2.14 -0.5
PK 16000.0 2.14 0.0
Download
This EQ is designed for a 15 bands graphical EQ.
Donner Dyna 4
Graphic EQ 31 bands
Set preamp gain to: -0.4dB.
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 -0.5
PK 125.0 4.32 -0.75
PK 160.0 4.32 -0.5
PK 200.0 4.32 -0.5
PK 250.0 4.32 -0.25
PK 315.0 4.32 0.0
PK 400.0 4.32 0.0
PK 500.0 4.32 0.0
PK 630.0 4.32 0.25
PK 800.0 4.32 0.25
PK 1000.0 4.32 0.0
PK 1250.0 4.32 0.0
PK 1600.0 4.32 0.0
PK 2000.0 4.32 0.0
PK 2500.0 4.32 0.0
PK 3150.0 4.32 0.25
PK 4000.0 4.32 0.0
PK 5000.0 4.32 -0.25
PK 6300.0 4.32 -0.5
PK 8000.0 4.32 -0.75
PK 10000.0 4.32 -0.5
PK 12000.0 4.32 -0.25
PK 16000.0 4.32 -0.25
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)
Donner Dyna 4: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
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