What we know about the measurement:

Bowers & Wilkins 805S is a passive bookshelves that cost around 2500 USD each.

  • Quality of the measurement data is high.
  • Origin of the data is ASR.
  • Format of the data is generated by a Klippel NFS .
  • Sensitivity: 87.8dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 46.9Hz (resp. 41.0Hz).
  • Reference level is normalised to 0.1dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 4.3dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-40.0°, 40.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-10.0°, 20.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 4.39 and would be 6.34 with a perfect subwoofer.
      • Details: NBD: ON 0.599, LW 0.547, SP 0.412, PIR 0.423; SM: SP0.814, PIR0.611; LFQ 0.833, LFX 41Hz
    • Tonality (Preference) Score is 6.24 with an EQ and would be 7.98 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.42, LW 0.369, SP 0.314, PIR 0.264; SM: SP0.965, PIR0.92; LFQ 0.833, LFX 36Hz
  • Link to Original review.
Bowers & Wilkins 805S
AutomaticEQ (IIR)
Set preamp gain to: -2.6dB.
Type Freq Q Gain
3 36.0 0.6 2.43
3 190.0 0.52 -1.95
3 356.0 2.94 0.79
3 792.0 1.28 -2.28
3 1046.0 3.0 3.0
3 2670.0 1.89 3.0
3 10341.0 0.69 -2.54
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These EQ optimise the Harman score and is a good start for far field listening like in your living room.

Bowers & Wilkins 805S filters_auto_eq

AutomaticEQ

Bowers & Wilkins 805S filters_eq_full

Target v.s. EQ

Bowers & Wilkins 805S
flipflop@ASR (IIR)
Set preamp gain to: -5.5dB.
Type Freq Q Gain
3 415.0 5.0 0.4
3 716.0 2.668 -1.4
3 854.0 5.0 -1.4
3 1089.0 5.0 5.2
3 1218.0 5.0 -3.0
3 1422.0 10.0 0.7
3 1544.0 12.0 -1.2
3 1615.0 2.988 -2.6
3 1695.0 10.0 0.8
3 1758.0 1.0 3.1
3 1875.0 18.0 -0.7
3 2217.0 15.0 -1.4
3 2412.0 13.0 1.7
3 2590.0 18.0 -1.1
3 2631.0 1.012 -6.5
3 2931.0 1.092 11.6
3 3608.0 2.691 -4.8
3 10315.0 1.0 -1.9
3 10820.0 9.0 0.6
3 15540.0 4.0 -0.4
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These EQ is designed by ASR member flipflop.

Bowers & Wilkins 805S
Graphic EQ 15 bands
Set preamp gain to: -1.1dB.
Type Freq Q Gain
3 25.0 2.14 0.5
3 40.0 2.14 0.5
3 63.0 2.14 0.0
3 100.0 2.14 0.0
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 0.5
3 1600.0 2.14 0.25
3 2500.0 2.14 1.0
3 4000.0 2.14 0.25
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.

Bowers & Wilkins 805S
Graphic EQ 31 bands
Set preamp gain to: -0.6dB.
Type Freq Q Gain
3 20.0 4.32 0.0
3 25.0 4.32 0.25
3 31.0 4.32 0.25
3 40.0 4.32 0.25
3 50.0 4.32 0.25
3 63.0 4.32 0.0
3 80.0 4.32 0.0
3 100.0 4.32 0.0
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 0.0
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 0.0
3 1600.0 4.32 0.0
3 2000.0 4.32 0.25
3 2500.0 4.32 0.5
3 3150.0 4.32 0.25
3 4000.0 4.32 0.0
3 5000.0 4.32 0.0
3 6300.0 4.32 0.0
3 8000.0 4.32 -0.25
3 10000.0 4.32 -0.25
3 12000.0 4.32 -0.25
3 16000.0 4.32 -0.25
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

Bowers & Wilkins 805S: comparison between EQs
Bowers & Wilkins 805S

Comparison betweens various EQs

Bowers & Wilkins 805S

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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