What we know about the measurement:

Definitive Technology Demand D11 is a passive bookshelves that cost around 1200 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 60.1Hz (resp. 52.7Hz).
  • Reference level is normalised to -0.0dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 4.3dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 4.41 and would be 6.77 with a perfect subwoofer.
      • Details: NBD: ON 0.471, LW 0.461, SP 0.469, PIR 0.452; SM: SP0.832, PIR0.697; LFQ 0.644, LFX 51Hz
    • Tonality (Preference) Score is 5.83 with an EQ and would be 8.03 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.344, LW 0.346, SP 0.345, PIR 0.308; SM: SP0.945, PIR0.917; LFQ 0.634, LFX 46Hz
  • Link to Original review.
Definitive Technology Demand D11
AutomaticEQ (IIR)
Set preamp gain to: -2.4dB.
Type Freq Q Gain
PK 60.0 1.16 2.81
PK 102.0 0.98 -2.92
PK 547.0 2.98 2.82
PK 646.0 3.0 -2.99
PK 903.0 2.21 1.48
PK 2721.0 2.88 2.78
PK 3438.0 2.08 -0.38
PK 6489.0 1.46 -2.28
PK 11843.0 1.18 0.16
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This EQ optimise the Harman score and is a good start for far field listening like in your living room.
Definitive Technology Demand D11
flipflop@ASR (IIR)
Set preamp gain to: -3.5dB.
Type Freq Q Gain
PK 375.0 4.0 0.9
PK 445.0 13.0 -0.9
PK 488.0 10.0 0.9
PK 532.0 13.0 4.2
PK 577.0 18.0 2.9
PK 618.0 5.4 -4.8
PK 745.0 16.0 1.0
PK 892.0 6.0 0.8
PK 1084.0 10.0 0.8
PK 1240.0 4.8 -1.4
PK 1760.0 11.0 -1.2
PK 2220.0 25.0 -0.7
PK 2567.0 20.0 1.0
PK 2830.0 10.0 1.4
PK 3425.0 11.0 -0.4
PK 6430.0 2.5 -2.0
PK 9700.0 2.5 -1.5
PK 11400.0 6.5 1.5
PK 13400.0 2.8 -1.5
PK 16800.0 4.0 -1.2
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This EQ is designed by ASR member flipflop.
Definitive Technology Demand D11
Graphic EQ 15 bands
Set preamp gain to: -0.5dB.
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 -0.25
PK 160.0 2.14 -0.25
PK 250.0 2.14 0.0
PK 400.0 2.14 0.0
PK 630.0 2.14 -0.5
PK 1000.0 2.14 0.25
PK 1600.0 2.14 0.25
PK 2500.0 2.14 0.5
PK 4000.0 2.14 0.0
PK 6300.0 2.14 -0.25
PK 10000.0 2.14 0.0
PK 16000.0 2.14 0.25
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This EQ is designed for a 15 bands graphical EQ.
Definitive Technology Demand D11
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 -0.25
PK 125.0 4.32 -0.25
PK 160.0 4.32 -0.25
PK 200.0 4.32 -0.25
PK 250.0 4.32 0.0
PK 315.0 4.32 0.0
PK 400.0 4.32 0.0
PK 500.0 4.32 0.25
PK 630.0 4.32 -0.5
PK 800.0 4.32 0.0
PK 1000.0 4.32 0.0
PK 1250.0 4.32 -0.25
PK 1600.0 4.32 0.0
PK 2000.0 4.32 0.0
PK 2500.0 4.32 0.25
PK 3150.0 4.32 0.25
PK 4000.0 4.32 0.0
PK 5000.0 4.32 0.0
PK 6300.0 4.32 -0.25
PK 8000.0 4.32 0.0
PK 10000.0 4.32 0.0
PK 12000.0 4.32 0.0
PK 16000.0 4.32 0.0
PK 20000.0 4.32 0.0
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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)
Definitive Technology Demand D11: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
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