What we know about the measurement:

Wharfedale Diamond 220 is a passive bookshelves that cost around 200 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 .
  • Sensitivity: 86.4dB (avg. 100Hz-1kHz for 2.83V estimated at 1m)
  • -3dB (resp. -6db) point v.s. reference is at 117.2Hz (resp. 85.0Hz).
  • Reference level is normalised to -0.1dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.6dB 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 3.55 and would be 6.8 with a perfect subwoofer.
      • Details: NBD: ON 0.438, LW 0.438, SP 0.485, PIR 0.446; SM: SP0.847, PIR0.665; LFQ 0.74, LFX 82Hz
    • Tonality (Preference) Score is 5.96 with an EQ and would be 8.1 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.304, LW 0.299, SP 0.356, PIR 0.306; SM: SP0.948, PIR0.902; LFQ 0.492, LFX 45Hz
  • Link to Original review.
Wharfedale Diamond 220
AutomaticEQ (IIR)
Set preamp gain to: -6.5dB.
Type Freq Q Gain
5 117.0 0.54 2.96
3 117.0 0.27 2.98
3 117.0 0.27 2.68
3 158.0 1.17 -2.65
3 237.0 0.43 -2.99
3 965.0 2.7 -1.91
3 1822.0 0.8 0.93
3 2302.0 2.86 1.96
3 6276.0 1.26 0.97
Download

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

Wharfedale Diamond 220 filters_auto_eq

AutomaticEQ

Wharfedale Diamond 220 filters_eq_full

Target v.s. EQ

Wharfedale Diamond 220
flipflop@ASR (IIR)
Set preamp gain to: -1.9dB.
Type Freq Q Gain
3 303.0 1.8 0.6
3 369.0 6.0 -0.6
3 473.0 1.001 -1.0
3 553.0 12.0 -0.5
3 913.0 5.0 -2.0
3 1371.0 5.0 5.0
3 1403.0 2.249 -5.1
3 1695.0 4.998 2.3
3 1994.0 4.999 0.8
3 2065.0 18.0 0.7
3 2235.0 17.0 -1.1
3 2395.0 5.0 2.1
3 2410.0 14.0 1.2
3 2570.0 15.0 -1.1
3 3340.0 1.041 -1.1
3 3650.0 18.0 -0.6
3 5670.0 15.0 -0.6
3 5724.0 4.958 2.1
3 9771.0 1.265 -1.5
3 14394.0 5.0 1.2
Download

These EQ is designed by ASR member flipflop.

Wharfedale Diamond 220
Graphic EQ 15 bands
Set preamp gain to: -1.1dB.
Type Freq Q Gain
3 25.0 2.14 0.75
3 40.0 2.14 0.75
3 63.0 2.14 0.75
3 100.0 2.14 0.75
3 160.0 2.14 0.25
3 250.0 2.14 0.0
3 400.0 2.14 0.0
3 630.0 2.14 0.0
3 1000.0 2.14 -0.25
3 1600.0 2.14 0.5
3 2500.0 2.14 0.75
3 4000.0 2.14 0.0
3 6300.0 2.14 0.25
3 10000.0 2.14 0.0
3 16000.0 2.14 0.25
Download

These EQ is designed for a 15 bands graphical EQ.

Wharfedale Diamond 220
Graphic EQ 31 bands
Set preamp gain to: -1.2dB.
Type Freq Q Gain
3 20.0 4.32 0.0
3 25.0 4.32 0.75
3 31.0 4.32 0.75
3 40.0 4.32 0.75
3 50.0 4.32 0.75
3 63.0 4.32 0.75
3 80.0 4.32 0.75
3 100.0 4.32 0.75
3 125.0 4.32 0.5
3 160.0 4.32 0.25
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 0.0
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 -0.25
3 1250.0 4.32 0.0
3 1600.0 4.32 0.25
3 2000.0 4.32 0.75
3 2500.0 4.32 0.5
3 3150.0 4.32 0.0
3 4000.0 4.32 0.0
3 5000.0 4.32 0.25
3 6300.0 4.32 0.25
3 8000.0 4.32 -0.25
3 10000.0 4.32 0.0
3 12000.0 4.32 0.0
3 16000.0 4.32 0.0
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

Wharfedale Diamond 220: comparison between EQs
Wharfedale Diamond 220

Comparison betweens various EQs

Wharfedale Diamond 220

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
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