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 estimated 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
3 54.0 2.82 1.57
3 144.0 2.98 -1.22
3 395.0 0.25 -1.01
3 4495.0 2.98 -2.36
3 7566.0 2.99 3.0
3 8397.0 1.15 -3.88
3 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
3 25.0 2.14 0.0
3 40.0 2.14 0.0
3 63.0 2.14 0.0
3 100.0 2.14 -0.25
3 160.0 2.14 -0.25
3 250.0 2.14 -0.25
3 400.0 2.14 0.0
3 630.0 2.14 -0.25
3 1000.0 2.14 -0.25
3 1600.0 2.14 -0.5
3 2500.0 2.14 -0.25
3 4000.0 2.14 -0.5
3 6300.0 2.14 -0.75
3 10000.0 2.14 -1.0
3 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
3 20.0 4.32 0.0
3 25.0 4.32 0.0
3 31.0 4.32 0.0
3 40.0 4.32 0.0
3 50.0 4.32 0.0
3 63.0 4.32 0.0
3 80.0 4.32 0.0
3 100.0 4.32 -0.25
3 125.0 4.32 -0.25
3 160.0 4.32 -0.25
3 200.0 4.32 -0.25
3 250.0 4.32 -0.25
3 315.0 4.32 -0.25
3 400.0 4.32 -0.25
3 500.0 4.32 -0.25
3 630.0 4.32 -0.25
3 800.0 4.32 -0.25
3 1000.0 4.32 -0.25
3 1250.0 4.32 -0.5
3 1600.0 4.32 -0.5
3 2000.0 4.32 -0.5
3 2500.0 4.32 -0.25
3 3150.0 4.32 -0.25
3 4000.0 4.32 -0.5
3 5000.0 4.32 -0.75
3 6300.0 4.32 -0.75
3 8000.0 4.32 -0.75
3 10000.0 4.32 -1.0
3 12000.0 4.32 -1.0
3 16000.0 4.32 -0.75
3 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
;