What we know about the measurement:

Perlisten r4s is a passive bookshelves that cost around 2000 USD each.

  • Quality of the measurement data is medium.
  • Origin of the data is Perlisten.
  • Format of the data is a scanned image .
  • -3dB (resp. -6db) point v.s. reference is at 78.1Hz (resp. 63.9Hz).
  • Reference level is normalised to 0.5dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 1.3dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 5.87 and would be 8.56 with a perfect subwoofer.
      • Details: NBD: ON 0.249, LW 0.252, SP 0.288, PIR 0.254; SM: SP0.98, PIR0.974; LFQ 0.35, LFX 60Hz
    • Tonality (Preference) Score is 6.82 with an EQ and would be 8.86 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.181, LW 0.167, SP 0.256, PIR 0.208; SM: SP0.979, PIR0.973; LFQ 0.28, LFX 43Hz
  • Link to original Review: vendor review. .
  • Note: Warning: measurements provided by vendor (Perlisten) are smoothed.
  • Vendor specifications:
    • Sensitivity 86.5 dB
    • Impedance 4 Ohm
    • SPL
      • max: 109 dB
    • Size
      • Width 230mm
      • Height 378mm
      • Depth 173mm
    • Weight 9.5kg
Perlisten r4s
AutomaticEQ (IIR)
Set preamp gain to: -5.0dB.
Type Freq Q Gain
PK 42.0 0.93 3.0
PK 80.0 0.25 2.99
PK 125.0 0.87 -4.01
PK 382.0 0.72 -1.7
PK 1083.0 2.99 -1.06
PK 7566.0 2.74 -0.59
PK 12736.0 2.59 0.78
Download
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
Improvement made by adding the above EQ
EQ
AutoEQ
Target v.s. EQ
Target v.s. EQ
Histogram of errors
On Axis (fullrange)
Listening Window (fullrange)
Predicted In-Room Response (fullrange)
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