What we know about the measurement:

OS Acoustics DBS8 is an active bookshelves that cost around 2800 USD each.

  • Quality of the measurement data is low.
  • Origin of the data is Sound and Recording.
  • Format of the data is a scanned image .
  • -3dB (resp. -6db) point v.s. reference is at 48.5Hz (resp. 42.8Hz).
  • Reference level is normalised to 0.4dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.6dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 6.13 and would be 8.1 with a perfect subwoofer.
      • Details: NBD: ON 0.29, LW 0.239, SP 0.438, PIR 0.295; SM: SP0.818, PIR0.874; LFQ 1.557, LFX 41Hz
    • Tonality (Preference) Score is 6.7 with an EQ and would be 8.47 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.271, LW 0.221, SP 0.352, PIR 0.229; SM: SP0.848, PIR0.928; LFQ 1.557, LFX 37Hz
  • Link to original Review: sr review. Links to other reviews: sos review .
  • Vendor specifications:
    • Dispersion: 90° horizontal and 50° vertical.
    • Sensitivity 92 dB
    • Impedance 8 Ohm
    • Size
      • Width 256mm
      • Height 422mm
      • Depth 261mm
    • Weight 10.0kg
OS Acoustics DBS8
AutomaticEQ (IIR)
Set preamp gain to: -1.9dB.
Type Freq Q Gain
PK 42.0 1.33 3.0
PK 80.0 0.69 -2.19
PK 621.0 2.96 -1.7
PK 1202.0 2.92 -0.86
PK 3289.0 1.0 -1.76
PK 6585.0 2.94 -1.36
PK 9001.0 0.64 0.41
Download

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

OS Acoustics DBS8 filters_auto_eq

AutomaticEQ

OS Acoustics DBS8 filters_eq_full

Target v.s. EQ

OS Acoustics DBS8
Graphic EQ 15 bands
Set preamp gain to: -0.9dB.
Type Freq Q Gain
PK 25.0 2.14 0.75
PK 40.0 2.14 0.75
PK 63.0 2.14 -0.25
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 0.0
PK 1600.0 2.14 0.25
PK 2500.0 2.14 0.0
PK 4000.0 2.14 -0.5
PK 6300.0 2.14 0.0
PK 10000.0 2.14 0.25
PK 16000.0 2.14 0.25
Download

These EQ is designed for a 15 bands graphical EQ.

OS Acoustics DBS8
Graphic EQ 31 bands
Set preamp gain to: -0.7dB.
Type Freq Q Gain
PK 20.0 4.32 0.0
PK 25.0 4.32 0.5
PK 31.0 4.32 0.5
PK 40.0 4.32 0.5
PK 50.0 4.32 0.25
PK 63.0 4.32 0.0
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 0.0
PK 200.0 4.32 0.0
PK 250.0 4.32 -0.25
PK 315.0 4.32 0.0
PK 400.0 4.32 0.0
PK 500.0 4.32 0.0
PK 630.0 4.32 0.0
PK 800.0 4.32 0.0
PK 1000.0 4.32 0.0
PK 1250.0 4.32 0.0
PK 1600.0 4.32 0.25
PK 2000.0 4.32 0.0
PK 2500.0 4.32 0.0
PK 3150.0 4.32 -0.25
PK 4000.0 4.32 -0.25
PK 5000.0 4.32 0.0
PK 6300.0 4.32 0.0
PK 8000.0 4.32 0.25
PK 10000.0 4.32 0.25
PK 12000.0 4.32 0.25
PK 16000.0 4.32 0.25
PK 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

OS Acoustics DBS8: comparison between EQs
OS Acoustics DBS8

Comparison betweens various EQs

OS Acoustics DBS8

Improvements made by EQ

Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
;