What we know about the measurement:

DIYSG Volt-8 v2 is a passive bookshelves that cost around 300 USD for a pair.

  • Quality of the measurement data is high.
  • Origin of the data is ErinsAudioCorner.
  • Format of the data is generated by a Klippel NFS .
  • Sensitivity: 89.9dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 90.8Hz (resp. 64.5Hz).
  • Reference level is normalised to 0.1dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 4.2dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-50.0°, 50.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-50.0°, 50.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 2.01 and would be 4.76 with a perfect subwoofer.
      • Details: NBD: ON 0.918, LW 0.703, SP 0.682, PIR 0.646; SM: SP0.724, PIR0.561; LFQ 1.17, LFX 62Hz
    • Tonality (Preference) Score is 4.03 with an EQ and would be 6.64 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.734, LW 0.451, SP 0.456, PIR 0.392; SM: SP0.875, PIR0.845; LFQ 1.17, LFX 58Hz
  • Link to original Review: eac review. Links to other reviews: asr review .
DIYSG Volt-8 v2
AutomaticEQ (IIR)
Set preamp gain to: -2.2dB.
Type Freq Q Gain
5 143.0 0.53 2.99
3 447.0 2.84 2.1
3 817.0 2.99 -2.98
3 1032.0 2.9 2.9
3 1220.0 1.84 0.36
3 2631.0 1.79 2.9
3 6069.0 2.91 -1.48
3 10020.0 2.77 -2.25
5 13537.0 0.73 -0.82
Download

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

DIYSG Volt-8 v2 filters_auto_eq

AutomaticEQ

DIYSG Volt-8 v2 filters_eq_full

Target v.s. EQ

DIYSG Volt-8 v2
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 0.5
3 160.0 2.14 0.0
3 250.0 2.14 -0.25
3 400.0 2.14 0.25
3 630.0 2.14 0.0
3 1000.0 2.14 0.25
3 1600.0 2.14 -0.25
3 2500.0 2.14 0.75
3 4000.0 2.14 0.0
3 6300.0 2.14 -0.5
3 10000.0 2.14 0.0
3 16000.0 2.14 0.5
Download

These EQ is designed for a 15 bands graphical EQ.

DIYSG Volt-8 v2
Graphic EQ 31 bands
Set preamp gain to: -0.8dB.
Type Freq Q Gain
3 20.0 4.32 0.0
3 25.0 4.32 0.5
3 31.0 4.32 0.5
3 40.0 4.32 0.5
3 50.0 4.32 0.5
3 63.0 4.32 0.5
3 80.0 4.32 0.5
3 100.0 4.32 0.5
3 125.0 4.32 0.25
3 160.0 4.32 0.0
3 200.0 4.32 -0.25
3 250.0 4.32 -0.25
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 -0.25
3 1000.0 4.32 0.25
3 1250.0 4.32 0.25
3 1600.0 4.32 -0.25
3 2000.0 4.32 0.0
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 -0.25
3 6300.0 4.32 -0.5
3 8000.0 4.32 -0.25
3 10000.0 4.32 -0.25
3 12000.0 4.32 0.0
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.

DIYSG Volt-8 v2: comparison between EQs
DIYSG Volt-8 v2

Comparison betweens various EQs

DIYSG Volt-8 v2

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
;