What we know about the measurement:

Perlisten s4s is a passive surround that cost around 7600 USD for a pair.

  • Quality of the measurement data is low.
  • Origin of the data is Perlisten.
  • Format of the data is a scanned image .
  • Sensitivity: 88.6dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 70.4Hz (resp. 55.3Hz).
  • Reference level is normalised to 0.5dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 1.0dB over the same frequency range.
  • Tonality (Preference) Score
    • Note: The tonality (Preference) score does not make sense for surround speakers. Don't give too much credits to the value.
    • Tonality (Preference) Score is 6.42 and would be 8.96 with a perfect subwoofer.
      • Details: NBD: ON 0.193, LW 0.165, SP 0.221, PIR 0.166; SM: SP0.978, PIR0.971; LFQ 1.338, LFX 56Hz
    • Tonality (Preference) Score is 7.3 with an EQ and would be 9.19 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.145, LW 0.111, SP 0.179, PIR 0.117; SM: SP0.959, PIR0.96; LFQ 1.341, LFX 39Hz
  • Link to original Review: vendor review. .
  • Note: Warning: measurements provided by vendor (Perlisten) are smoothed.
Perlisten s4s
AutomaticEQ (IIR)
Set preamp gain to: -4.7dB.
Type Freq Q Gain
LS 70.0 0.89 2.97
PK 70.0 0.31 2.85
PK 117.0 0.97 -2.2
PK 143.0 0.75 -1.88
PK 207.0 0.44 -0.33
PK 271.0 2.76 0.42
PK 5135.0 0.4 0.7
Download

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

Perlisten s4s filters_auto_eq

AutomaticEQ

Perlisten s4s filters_eq_full

Target v.s. EQ

Perlisten s4s
Graphic EQ 15 bands
Set preamp gain to: -1.0dB.
Type Freq Q Gain
PK 25.0 2.14 0.75
PK 40.0 2.14 0.75
PK 63.0 2.14 0.75
PK 100.0 2.14 0.0
PK 160.0 2.14 -0.25
PK 250.0 2.14 0.0
PK 400.0 2.14 0.0
PK 630.0 2.14 -0.25
PK 1000.0 2.14 0.0
PK 1600.0 2.14 0.0
PK 2500.0 2.14 0.0
PK 4000.0 2.14 0.0
PK 6300.0 2.14 0.25
PK 10000.0 2.14 0.0
PK 16000.0 2.14 0.25
Download

These EQ is designed for a 15 bands graphical EQ.

Perlisten s4s
Graphic EQ 31 bands
Set preamp gain to: -1.1dB.
Type Freq Q Gain
PK 20.0 4.32 0.0
PK 25.0 4.32 0.75
PK 31.0 4.32 0.75
PK 40.0 4.32 0.75
PK 50.0 4.32 0.75
PK 63.0 4.32 0.75
PK 80.0 4.32 0.5
PK 100.0 4.32 0.0
PK 125.0 4.32 -0.25
PK 160.0 4.32 -0.25
PK 200.0 4.32 -0.25
PK 250.0 4.32 -0.25
PK 315.0 4.32 -0.25
PK 400.0 4.32 -0.25
PK 500.0 4.32 -0.25
PK 630.0 4.32 -0.25
PK 800.0 4.32 -0.25
PK 1000.0 4.32 -0.25
PK 1250.0 4.32 0.0
PK 1600.0 4.32 0.0
PK 2000.0 4.32 0.0
PK 2500.0 4.32 0.0
PK 3150.0 4.32 -0.25
PK 4000.0 4.32 0.0
PK 5000.0 4.32 0.0
PK 6300.0 4.32 0.0
PK 8000.0 4.32 0.0
PK 10000.0 4.32 -0.25
PK 12000.0 4.32 -0.25
PK 16000.0 4.32 -0.25
PK 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

Perlisten s4s: comparison between EQs
Perlisten s4s

Comparison betweens various EQs

Perlisten s4s

Improvements made by EQ

Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
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