What we know about the measurement:

Perlisten r4b is a passive bookshelves that cost around 2500 USD each.

  • Quality of the measurement data is low.
  • Origin of the data is Perlisten.
  • Format of the data is a scanned image .
  • Sensitivity: 84.6dB (avg. 100Hz-1kHz for 2.83V estimated at 1m)
  • -3dB (resp. -6db) point v.s. reference is at 80.3Hz (resp. 62.2Hz).
  • Reference level is normalised to 0.3dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 1.6dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 5.88 and would be 8.75 with a perfect subwoofer.
      • Details: NBD: ON 0.244, LW 0.187, SP 0.251, PIR 0.185; SM: SP0.977, PIR0.962; LFQ 1.586, LFX 67Hz
    • Tonality (Preference) Score is 6.86 with an EQ and would be 9.12 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.182, LW 0.13, SP 0.203, PIR 0.128; SM: SP0.986, PIR0.983; LFQ 1.586, LFX 48Hz
  • Link to original Review: vendor review. .
  • Note: Warning: measurements provided by vendor (Perlisten) are smoothed.
Perlisten r4b
AutomaticEQ (IIR)
Set preamp gain to: -2.9dB.
Type Freq Q Gain
3 49.0 0.67 3.0
3 130.0 1.77 -1.21
3 487.0 0.57 -1.0
3 1700.0 2.82 -1.15
3 1887.0 2.9 1.12
3 8397.0 2.97 0.26
3 12301.0 2.72 1.02
Download

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

Perlisten r4b filters_auto_eq

AutomaticEQ

Perlisten r4b filters_eq_full

Target v.s. EQ

Perlisten r4b
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 0.25
3 160.0 2.14 0.0
3 250.0 2.14 0.0
3 400.0 2.14 -0.25
3 630.0 2.14 0.0
3 1000.0 2.14 0.0
3 1600.0 2.14 0.0
3 2500.0 2.14 0.0
3 4000.0 2.14 0.0
3 6300.0 2.14 0.25
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.

Perlisten r4b
Graphic EQ 31 bands
Set preamp gain to: -1.2dB.
Type Freq Q Gain
3 20.0 4.32 0.0
3 25.0 4.32 0.75
3 31.0 4.32 0.75
3 40.0 4.32 0.75
3 50.0 4.32 0.75
3 63.0 4.32 0.75
3 80.0 4.32 0.75
3 100.0 4.32 0.25
3 125.0 4.32 0.0
3 160.0 4.32 0.0
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 0.0
3 800.0 4.32 0.0
3 1000.0 4.32 0.0
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 0.0
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 0.25
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.

Perlisten r4b: comparison between EQs
Perlisten r4b

Comparison betweens various EQs

Perlisten r4b

Improvements made by EQ

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