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 .
  • Sensitivity: 86.7dB (avg. 100Hz-1kHz for 2.83V estimated at 1m)
  • -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 173 mm)
    • Weight 9.5 kg
Perlisten r4s
AutomaticEQ (IIR)
Set preamp gain to: -5.0dB.
Type Freq Q Gain
3 42.0 0.93 3.0
3 80.0 0.25 2.99
3 125.0 0.87 -4.01
3 382.0 0.72 -1.7
3 1083.0 2.99 -1.06
3 7566.0 2.74 -0.59
3 12736.0 2.59 0.78
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These EQ optimise the Harman score and is a good start for far field listening like in your living room.

Perlisten r4s filters_auto_eq

AutomaticEQ

Perlisten r4s filters_eq_full

Target v.s. EQ
CEA2034
On Axis
Estimated In-Room Response
CEA2034
On Axis
Estimated In-Room Response
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
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