What we know about the measurement:

Dayton Audio B652-AIR is a passive bookshelves that cost around 70 USD for a pair.

  • Quality of the measurement data is high.
  • Origin of the data is ASR.
  • Format of the data is generated by a Klippel NFS .
  • Sensitivity: 86.2dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 98.1Hz (resp. 79.8Hz).
  • Reference level is normalised to 0.0dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 8.2dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-30.0°, 40.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-50.0°, 40.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 1.46 and would be 4.58 with a perfect subwoofer.
      • Details: NBD: ON 0.894, LW 0.83, SP 0.6, PIR 0.651; SM: SP0.766, PIR0.463; LFQ 0.476, LFX 76Hz
    • Tonality (Preference) Score is 4.24 with an EQ and would be 6.96 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.616, LW 0.562, SP 0.417, PIR 0.413; SM: SP0.925, PIR0.886; LFQ 0.412, LFX 62Hz
  • Link to Original review.
Dayton Audio B652-AIR
AutomaticEQ (IIR)
Set preamp gain to: -3.0dB.
Type Freq Q Gain
3 67.0 0.79 3.0
3 321.0 2.78 2.56
3 1244.0 2.99 -2.32
3 3779.0 2.99 -8.98
3 4495.0 0.91 2.92
3 11476.0 1.6 -7.23
3 16239.0 0.26 2.92
Download

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

Dayton Audio B652-AIR filters_auto_eq

AutomaticEQ

Dayton Audio B652-AIR filters_eq_full

Target v.s. EQ

Dayton Audio B652-AIR
flipflop@ASR (IIR)
Set preamp gain to: -5.2dB.
Type Freq Q Gain
3 380.0 10.0 -1.4
3 450.0 10.0 -2.6
3 610.0 3.0 -2.5
3 770.0 8.0 -0.8
3 953.0 5.0 -4.7
3 1135.0 5.0 5.0
3 1205.0 4.988 -7.5
3 1861.0 1.147 -3.6
3 2566.0 1.0 5.0
3 2874.0 2.944 -7.5
3 3178.0 4.895 3.6
3 3721.0 5.0 -8.4
3 5760.0 17.0 -2.0
3 6450.0 18.0 2.5
3 7186.0 1.0 3.4
3 7820.0 10.0 1.8
3 8530.0 12.0 -2.5
3 11177.0 1.914 -5.2
3 12480.0 10.0 -1.2
3 16400.0 4.0 4.3
Download

These EQ is designed by ASR member flipflop.

Dayton Audio B652-AIR
Graphic EQ 15 bands
Set preamp gain to: -0.7dB.
Type Freq Q Gain
3 25.0 2.14 0.5
3 40.0 2.14 0.5
3 63.0 2.14 0.5
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 0.0
3 630.0 2.14 0.0
3 1000.0 2.14 -0.25
3 1600.0 2.14 0.0
3 2500.0 2.14 0.0
3 4000.0 2.14 -0.5
3 6300.0 2.14 0.25
3 10000.0 2.14 -0.25
3 16000.0 2.14 0.5
Download

These EQ is designed for a 15 bands graphical EQ.

Dayton Audio B652-AIR
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 0.25
3 400.0 4.32 0.25
3 500.0 4.32 0.0
3 630.0 4.32 0.0
3 800.0 4.32 0.0
3 1000.0 4.32 0.0
3 1250.0 4.32 -0.25
3 1600.0 4.32 0.0
3 2000.0 4.32 0.0
3 2500.0 4.32 0.0
3 3150.0 4.32 0.0
3 4000.0 4.32 -0.5
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 0.0
3 12000.0 4.32 -0.5
3 16000.0 4.32 0.5
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

Dayton Audio B652-AIR: comparison between EQs
Dayton Audio B652-AIR

Comparison betweens various EQs

Dayton Audio B652-AIR

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
Frequency Frequency with EQ
;