What we know about the measurement:

Pioneer SP-BS22-LR is a passive bookshelves that cost around 160 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: 84.1dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 64.5Hz (resp. 60.1Hz).
  • Reference level is normalised to -0.4dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 3.2dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-60.0°, 70.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-20.0°, 30.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 4.91 and would be 7.52 with a perfect subwoofer.
      • Details: NBD: ON 0.452, LW 0.408, SP 0.352, PIR 0.321; SM: SP0.934, PIR0.831; LFQ 0.335, LFX 58Hz
    • Tonality (Preference) Score is 5.87 with an EQ and would be 8.41 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.313, LW 0.278, SP 0.296, PIR 0.224; SM: SP0.96, PIR0.941; LFQ 0.335, LFX 56Hz
  • Link to Original review.
Pioneer SP-BS22-LR
AutomaticEQ (IIR)
Set preamp gain to: -3.6dB.
Type Freq Q Gain
3 117.0 1.19 0.74
3 207.0 1.36 -0.88
3 432.0 2.9 -0.09
3 584.0 1.38 0.87
3 1103.0 1.4 -2.1
3 2545.0 1.96 -2.25
3 3801.0 1.7 1.08
3 8199.0 2.87 2.24
5 15474.0 0.99 1.4
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These EQ optimise the Harman score and is a good start for far field listening like in your living room.

Pioneer SP-BS22-LR filters_auto_eq

AutomaticEQ

Pioneer SP-BS22-LR filters_eq_full

Target v.s. EQ

Pioneer SP-BS22-LR
flipflop@ASR (IIR)
Set preamp gain to: -1.5dB.
Type Freq Q Gain
3 477.0 9.0 0.6
3 610.0 5.0 0.5
3 757.0 9.0 -0.6
3 1005.0 15.0 -0.8
3 1066.0 2.341 -1.6
3 1093.0 10.0 0.6
3 1810.0 20.0 -0.6
3 1867.0 1.0 -1.2
3 1993.0 5.0 1.0
3 2362.0 5.0 -1.7
3 2836.0 4.159 -1.6
3 5850.0 12.0 0.6
3 7000.0 7.0 -1.1
3 7960.0 10.0 1.0
3 7996.0 5.0 1.3
3 8830.0 15.0 -0.8
3 9700.0 14.0 1.0
3 10820.0 7.0 -0.9
3 11656.0 1.0 -1.0
3 15120.0 4.0 -1.1
Download

These EQ is designed by ASR member flipflop.

Pioneer SP-BS22-LR
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 0.25
3 250.0 2.14 0.25
3 400.0 2.14 0.25
3 630.0 2.14 0.25
3 1000.0 2.14 -0.25
3 1600.0 2.14 0.0
3 2500.0 2.14 -0.5
3 4000.0 2.14 0.5
3 6300.0 2.14 0.5
3 10000.0 2.14 0.25
3 16000.0 2.14 0.25
Download

These EQ is designed for a 15 bands graphical EQ.

Pioneer SP-BS22-LR
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 0.25
3 80.0 4.32 0.25
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 0.0
3 250.0 4.32 0.0
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 0.0
3 1000.0 4.32 -0.25
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 -0.25
3 3150.0 4.32 0.0
3 4000.0 4.32 0.25
3 5000.0 4.32 0.25
3 6300.0 4.32 0.25
3 8000.0 4.32 0.5
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.

Pioneer SP-BS22-LR: comparison between EQs
Pioneer SP-BS22-LR

Comparison betweens various EQs

Pioneer SP-BS22-LR

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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