What we know about the measurement:

Polk Audio T50 is a passive floorstanders that cost around 300 USD for a pair.

  • Quality of the measurement data is high.
  • Origin of the data is ASR.
  • Format of the data is generated by a Klippel NFS .
  • Sensitivity: 85.4dB (avg. 100Hz-1kHz for 2.83V estimated at 1m)
  • -3dB (resp. -6db) point v.s. reference is at 51.3Hz (resp. 42.5Hz).
  • Reference level is normalised to -0.2dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 4.2dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-60.0°, 60.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-20.0°, 30.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 3.66 and would be 5.67 with a perfect subwoofer.
      • Details: NBD: ON 0.603, LW 0.539, SP 0.428, PIR 0.465; SM: SP0.802, PIR0.383; LFQ 0.858, LFX 42Hz
    • Tonality (Preference) Score is 5.98 with an EQ and would be 7.86 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.419, LW 0.372, SP 0.363, PIR 0.315; SM: SP0.958, PIR0.932; LFQ 0.858, LFX 39Hz
  • Link to Original review.
Polk Audio T50
AutomaticEQ (IIR)
Set preamp gain to: -3.0dB.
Type Freq Q Gain
3 37.0 1.11 2.81
3 155.0 2.96 2.78
3 689.0 0.71 1.18
3 976.0 2.33 -5.35
3 1954.0 0.85 1.5
3 5732.0 1.29 -1.58
3 13186.0 1.18 -2.85
Download

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

Polk Audio T50 filters_auto_eq

AutomaticEQ

Polk Audio T50 filters_eq_full

Target v.s. EQ

Polk Audio T50
Graphic EQ 15 bands
Set preamp gain to: -0.7dB.
Type Freq Q Gain
3 25.0 2.14 0.5
3 40.0 2.14 0.5
3 63.0 2.14 0.25
3 100.0 2.14 0.25
3 160.0 2.14 0.5
3 250.0 2.14 0.25
3 400.0 2.14 0.0
3 630.0 2.14 0.0
3 1000.0 2.14 -0.75
3 1600.0 2.14 0.25
3 2500.0 2.14 0.25
3 4000.0 2.14 0.0
3 6300.0 2.14 -0.25
3 10000.0 2.14 -0.25
3 16000.0 2.14 -0.25
Download

These EQ is designed for a 15 bands graphical EQ.

Polk Audio T50
Graphic EQ 31 bands
Set preamp gain to: -0.7dB.
Type Freq Q Gain
3 20.0 4.32 0.0
3 25.0 4.32 0.5
3 31.0 4.32 0.5
3 40.0 4.32 0.5
3 50.0 4.32 0.5
3 63.0 4.32 0.25
3 80.0 4.32 0.0
3 100.0 4.32 0.25
3 125.0 4.32 0.25
3 160.0 4.32 0.5
3 200.0 4.32 0.0
3 250.0 4.32 0.25
3 315.0 4.32 0.0
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 -0.25
3 1000.0 4.32 -0.75
3 1250.0 4.32 -0.25
3 1600.0 4.32 0.25
3 2000.0 4.32 0.25
3 2500.0 4.32 0.25
3 3150.0 4.32 0.0
3 4000.0 4.32 0.0
3 5000.0 4.32 -0.25
3 6300.0 4.32 -0.25
3 8000.0 4.32 -0.25
3 10000.0 4.32 -0.25
3 12000.0 4.32 -0.25
3 16000.0 4.32 -0.25
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

Polk Audio T50: comparison between EQs
Polk Audio T50

Comparison betweens various EQs

Polk Audio T50

Improvements made by EQ

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