What we know about the measurement:

Dutch Dutch 8C is an active bookshelves that cost around 10000 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 23.4Hz (resp. 22.0Hz).
  • Reference level is normalised to -0.0dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 1.8dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-60.0°, 50.0°) 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 7.23 and would be 7.88 with a perfect subwoofer.
      • Details: NBD: ON 0.28, LW 0.246, SP 0.297, PIR 0.253; SM: SP0.839, PIR0.714; LFQ 2.571, LFX 20Hz
    • Tonality (Preference) Score is 7.96 with an EQ and would be 8.61 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.292, LW 0.231, SP 0.225, PIR 0.19; SM: SP0.969, PIR0.959; LFQ 2.571, LFX 20Hz
  • Link to original Review: eac review. Links to other reviews: asr review .
Dutch Dutch 8C
AutomaticEQ (IIR)
Set preamp gain to: -1.2dB.
Type Freq Q Gain
3 11704.0 0.59 -2.19
3 44.0 0.7 -2.13
3 1446.0 2.42 1.26
3 408.0 3.0 -1.19
3 85.0 2.95 -0.75
3 2447.0 2.97 0.76
3 745.0 2.95 -0.75
3 218.0 2.96 -0.75
3 6479.0 2.85 -0.75
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These EQ optimise the Harman score and is a good start for far field listening like in your living room.

Dutch Dutch 8C filters_auto_eq

AutomaticEQ

Dutch Dutch 8C filters_eq_full

Target v.s. EQ

Dutch Dutch 8C
Graphic EQ 15 bands
Set preamp gain to: -0.2dB.
Type Freq Q Gain
3 25.0 2.14 0.0
3 40.0 2.14 -0.25
3 63.0 2.14 -0.25
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 -0.25
3 630.0 2.14 0.0
3 1000.0 2.14 0.0
3 1600.0 2.14 0.25
3 2500.0 2.14 0.0
3 4000.0 2.14 0.0
3 6300.0 2.14 -0.25
3 10000.0 2.14 -0.25
3 16000.0 2.14 -0.25
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These EQ is designed for a 15 bands graphical EQ.

Dutch Dutch 8C
Graphic EQ 31 bands
Set preamp gain to: -0.3dB.
Type Freq Q Gain
3 20.0 4.32 0.0
3 25.0 4.32 0.0
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 0.0
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 -0.25
3 500.0 4.32 0.0
3 630.0 4.32 0.0
3 800.0 4.32 0.0
3 1000.0 4.32 0.0
3 1250.0 4.32 0.25
3 1600.0 4.32 0.25
3 2000.0 4.32 0.0
3 2500.0 4.32 0.0
3 3150.0 4.32 0.0
3 4000.0 4.32 0.0
3 5000.0 4.32 0.0
3 6300.0 4.32 -0.25
3 8000.0 4.32 -0.25
3 10000.0 4.32 -0.25
3 12000.0 4.32 -0.25
3 16000.0 4.32 -0.25
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

Dutch Dutch 8C: comparison between EQs
Dutch Dutch 8C

Comparison betweens various EQs

Dutch Dutch 8C

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
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