What we know about the measurement:

Polk Audio Legend L200 is a passive bookshelves

  • Quality of the measurement data is low.
  • Origin of the data is Misc.
  • Format of the data is a scanned image .
  • Sensitivity: 74.9dB (avg. 100Hz-1kHz for 2.83V estimated at 1m)
  • -3dB (resp. -6db) point v.s. reference is at 49.5Hz (resp. 44.3Hz).
  • Reference level is normalised to 0.4dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 1.8dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 5.37 and would be 7.42 with a perfect subwoofer.
      • Details: NBD: ON 0.428, LW 0.351, SP 0.397, PIR 0.319; SM: SP0.863, PIR0.761; LFQ 0.369, LFX 43Hz
    • Tonality (Preference) Score is 6.49 with an EQ and would be 8.36 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.326, LW 0.268, SP 0.332, PIR 0.229; SM: SP0.933, PIR0.938; LFQ 0.369, LFX 39Hz
  • Link to original Review: asr review. .
Polk Audio Legend L200
AutomaticEQ (IIR)
Set preamp gain to: -3.0dB.
Type Freq Q Gain
3 40.0 2.74 2.99
3 270.0 2.93 1.19
3 1161.0 2.99 -2.84
3 1202.0 0.82 2.98
3 1244.0 0.25 -1.44
3 8694.0 1.08 2.98
3 13186.0 0.25 -3.89
Download

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

Polk Audio Legend L200 filters_auto_eq

AutomaticEQ

Polk Audio Legend L200 filters_eq_full

Target v.s. EQ

Polk Audio Legend L200
Graphic EQ 15 bands
Set preamp gain to: -0.6dB.
Type Freq Q Gain
3 25.0 2.14 0.0
3 40.0 2.14 0.0
3 63.0 2.14 0.0
3 100.0 2.14 0.0
3 160.0 2.14 0.0
3 250.0 2.14 0.5
3 400.0 2.14 0.25
3 630.0 2.14 0.0
3 1000.0 2.14 0.25
3 1600.0 2.14 0.25
3 2500.0 2.14 0.0
3 4000.0 2.14 -0.5
3 6300.0 2.14 -0.25
3 10000.0 2.14 0.0
3 16000.0 2.14 -0.25
Download

These EQ is designed for a 15 bands graphical EQ.

Polk Audio Legend L200
Graphic EQ 31 bands
Set preamp gain to: -0.6dB.
Type Freq Q Gain
3 20.0 4.32 0.0
3 25.0 4.32 0.0
3 31.0 4.32 0.0
3 40.0 4.32 0.0
3 50.0 4.32 0.0
3 63.0 4.32 0.0
3 80.0 4.32 0.0
3 100.0 4.32 0.0
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 0.25
3 315.0 4.32 0.25
3 400.0 4.32 0.0
3 500.0 4.32 0.0
3 630.0 4.32 0.0
3 800.0 4.32 0.5
3 1000.0 4.32 0.25
3 1250.0 4.32 0.0
3 1600.0 4.32 0.25
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 -0.25
3 5000.0 4.32 -0.25
3 6300.0 4.32 0.0
3 8000.0 4.32 0.0
3 10000.0 4.32 0.0
3 12000.0 4.32 -0.25
3 16000.0 4.32 0.0
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

Polk Audio Legend L200: comparison between EQs
Polk Audio Legend L200

Comparison betweens various EQs

Polk Audio Legend L200

Improvements made by EQ

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