What we know about the measurement:

Bowers & Wilkins 803 D3 is a passive floorstanders that cost around 9000 USD each.

  • Quality of the measurement data is unknown.
  • Origin of the data is Bowers & Wilkins.
  • Format of the data is a scanned image .
  • Sensitivity: 88.0dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 54.5Hz (resp. 43.4Hz).
  • Reference level is normalised to 1.3dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 3.8dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 4.6 and would be 6.52 with a perfect subwoofer.
      • Details: NBD: ON 0.384, LW 0.3, SP 0.286, PIR 0.273; SM: SP0.682, PIR0.267; LFQ 1.527, LFX 40Hz
    • Tonality (Preference) Score is 6.59 with an EQ and would be 8.51 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.267, LW 0.239, SP 0.256, PIR 0.201; SM: SP0.924, PIR0.905; LFQ 1.527, LFX 40Hz
Bowers & Wilkins 803 D3
AutomaticEQ (IIR)
Set preamp gain to: -1.3dB.
Type Freq Q Gain
PK 54.0 2.82 1.57
PK 144.0 2.98 -1.22
PK 395.0 0.25 -1.01
PK 4495.0 2.98 -2.36
PK 7566.0 2.99 3.0
PK 8397.0 1.15 -3.88
PK 12736.0 0.44 -3.52
Download

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

Bowers & Wilkins 803 D3 filters_auto_eq

AutomaticEQ

Bowers & Wilkins 803 D3 filters_eq_full

Target v.s. EQ

Bowers & Wilkins 803 D3
Graphic EQ 15 bands
Set preamp gain to: -0.0dB.
Type Freq Q Gain
PK 25.0 2.14 0.0
PK 40.0 2.14 0.0
PK 63.0 2.14 0.0
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 0.0
PK 630.0 2.14 -0.25
PK 1000.0 2.14 -0.25
PK 1600.0 2.14 -0.5
PK 2500.0 2.14 -0.25
PK 4000.0 2.14 -0.5
PK 6300.0 2.14 -0.75
PK 10000.0 2.14 -1.0
PK 16000.0 2.14 -0.5
Download

These EQ is designed for a 15 bands graphical EQ.

Bowers & Wilkins 803 D3
Graphic EQ 31 bands
Set preamp gain to: -0.0dB.
Type Freq Q Gain
PK 20.0 4.32 0.0
PK 25.0 4.32 0.0
PK 31.0 4.32 0.0
PK 40.0 4.32 0.0
PK 50.0 4.32 0.0
PK 63.0 4.32 0.0
PK 80.0 4.32 0.0
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 -0.25
PK 630.0 4.32 -0.25
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 -0.5
PK 2000.0 4.32 -0.5
PK 2500.0 4.32 -0.25
PK 3150.0 4.32 -0.25
PK 4000.0 4.32 -0.5
PK 5000.0 4.32 -0.75
PK 6300.0 4.32 -0.75
PK 8000.0 4.32 -0.75
PK 10000.0 4.32 -1.0
PK 12000.0 4.32 -1.0
PK 16000.0 4.32 -0.75
PK 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

Bowers & Wilkins 803 D3: comparison between EQs
Bowers & Wilkins 803 D3

Comparison betweens various EQs

Bowers & Wilkins 803 D3

Improvements made by EQ

Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
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