What we know about the measurement:

Yamaha NS-6490 is a passive bookshelves that cost around 130 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 20.5Hz (resp. 71.8Hz).
  • Reference level is normalised to 0.8dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 6.3dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 1.46 and would be 4.34 with a perfect subwoofer.
      • Details: NBD: ON 0.751, LW 0.722, SP 0.644, PIR 0.661; SM: SP0.747, PIR0.219; LFQ 1.213, LFX 67Hz
    • Tonality (Preference) Score is 4.59 with an EQ and would be 6.32 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.645, LW 0.639, SP 0.636, PIR 0.614; SM: SP0.943, PIR0.899; LFQ 1.061, LFX 36Hz
  • Link to Original review.
Yamaha NS-6490
AutomaticEQ (IIR)
Set preamp gain to: -9.0dB.
Type Freq Q Gain
PK 22.0 0.26 3.0
PK 26.0 0.4 3.0
PK 31.0 0.42 3.0
PK 299.0 0.88 3.0
PK 3405.0 2.69 -2.53
PK 4989.0 1.54 -4.16
PK 12736.0 2.58 -6.0
Download
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
Yamaha NS-6490
flipflop@ASR (IIR)
Set preamp gain to: -0.0dB.
Type Freq Q Gain
PK 342.0 5.0 0.6
PK 432.0 5.0 -1.7
PK 575.0 5.0 -3.6
PK 620.0 5.0 12.0
PK 644.0 5.0 -11.4
PK 747.0 5.0 12.0
PK 762.0 5.0 -13.0
PK 1031.0 5.0 2.4
PK 1080.0 1.645 -5.7
PK 1552.0 5.0 -2.6
PK 1958.0 5.0 2.5
PK 2213.0 1.753 -3.9
PK 2823.0 5.0 10.2
PK 2950.0 5.0 -15.8
PK 3714.0 5.0 -10.6
PK 3742.0 2.221 12.0
PK 4647.0 2.399 -10.3
PK 6157.0 4.98 -3.7
PK 10413.0 5.0 -1.7
PK 12919.0 2.253 -6.9
Download
This EQ is designed by ASR member flipflop.
Yamaha NS-6490
Graphic EQ 15 bands
Set preamp gain to: -2.6dB.
Type Freq Q Gain
PK 25.0 2.14 2.25
PK 40.0 2.14 1.5
PK 63.0 2.14 0.75
PK 100.0 2.14 0.25
PK 160.0 2.14 0.25
PK 250.0 2.14 0.25
PK 400.0 2.14 0.25
PK 630.0 2.14 0.0
PK 1000.0 2.14 -0.25
PK 1600.0 2.14 -0.25
PK 2500.0 2.14 -0.25
PK 4000.0 2.14 -0.25
PK 6300.0 2.14 -0.25
PK 10000.0 2.14 0.0
PK 16000.0 2.14 0.0
Download
This EQ is designed for a 15 bands graphical EQ.
Yamaha NS-6490
Graphic EQ 31 bands
Set preamp gain to: -2.8dB.
Type Freq Q Gain
PK 20.0 4.32 0.0
PK 25.0 4.32 2.25
PK 31.0 4.32 1.75
PK 40.0 4.32 1.5
PK 50.0 4.32 1.0
PK 63.0 4.32 0.75
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 0.25
PK 315.0 4.32 0.25
PK 400.0 4.32 0.25
PK 500.0 4.32 0.0
PK 630.0 4.32 0.0
PK 800.0 4.32 -0.25
PK 1000.0 4.32 -0.25
PK 1250.0 4.32 -0.5
PK 1600.0 4.32 -0.25
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 -0.25
PK 5000.0 4.32 -0.5
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 -0.25
PK 16000.0 4.32 0.0
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)
Yamaha NS-6490: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
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