What we know about the measurement:

Polk Audio RT15i is a passive bookshelves

  • Quality of the measurement data is unknown.
  • Origin of the data is Polk Audio.
  • Format of the data is .
  • -3dB (resp. -6db) point v.s. reference is at 76.1Hz (resp. 60.4Hz).
  • Reference level is normalised to 0.3dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 6.4dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 2.97 and would be 5.53 with a perfect subwoofer.
      • Details: NBD: ON 0.802, LW 0.65, SP 0.466, PIR 0.482; SM: SP0.845, PIR0.557; LFQ 0.418, LFX 56Hz
    • Tonality (Preference) Score is 5.58 with an EQ and would be 7.79 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.529, LW 0.386, SP 0.332, PIR 0.251; SM: SP0.95, PIR0.938; LFQ 0.571, LFX 47Hz
  • Link to Original review.
Polk Audio RT15i
AutomaticEQ (IIR)
Set preamp gain to: -3.3dB.
Type Freq Q Gain
PK 51.0 0.7 2.98
PK 134.0 0.94 -2.57
PK 1046.0 2.97 -3.22
PK 2765.0 2.05 2.93
PK 3289.0 2.3 2.98
PK 4051.0 3.0 -3.3
PK 11882.0 0.29 -3.26
Download
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
Polk Audio RT15i
Graphic EQ 15 bands
Set preamp gain to: -0.7dB.
Type Freq Q Gain
PK 25.0 2.14 0.5
PK 40.0 2.14 0.5
PK 63.0 2.14 0.5
PK 100.0 2.14 -0.25
PK 160.0 2.14 -0.5
PK 250.0 2.14 -0.25
PK 400.0 2.14 -0.25
PK 630.0 2.14 0.0
PK 1000.0 2.14 -0.75
PK 1600.0 2.14 0.0
PK 2500.0 2.14 0.75
PK 4000.0 2.14 -0.5
PK 6300.0 2.14 -0.25
PK 10000.0 2.14 -0.25
PK 16000.0 2.14 -0.5
Download
This EQ is designed for a 15 bands graphical EQ.
Polk Audio RT15i
Graphic EQ 31 bands
Set preamp gain to: -0.8dB.
Type Freq Q Gain
PK 20.0 4.32 0.0
PK 25.0 4.32 0.5
PK 31.0 4.32 0.5
PK 40.0 4.32 0.5
PK 50.0 4.32 0.5
PK 63.0 4.32 0.5
PK 80.0 4.32 0.5
PK 100.0 4.32 -0.25
PK 125.0 4.32 -0.5
PK 160.0 4.32 -0.5
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 0.0
PK 800.0 4.32 0.0
PK 1000.0 4.32 -0.5
PK 1250.0 4.32 -0.25
PK 1600.0 4.32 0.0
PK 2000.0 4.32 0.25
PK 2500.0 4.32 0.25
PK 3150.0 4.32 0.5
PK 4000.0 4.32 -0.5
PK 5000.0 4.32 -0.25
PK 6300.0 4.32 -0.25
PK 8000.0 4.32 -0.25
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
This EQ is designed for a 31 bands graphical EQ.
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)
Polk Audio RT15i: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
;