What we know about the measurement:

Polk Audio XT20 is a passive bookshelves speaker that cost around 300USD for a pair .

  • Quality of the measurement data is high .
  • Origin of the data is ErinsAudioCorner .
  • Format of the data is generated by a Klippel NFS .
  • Sensitivity: 85.7dB (avg. 100Hz-1kHz for 2.83V measured at 1m)
  • -3dB (resp. -6db) point v.s. reference is at 64.5Hz (resp. 52.7Hz).
  • Reference level is normalised to 0.2dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.9dB 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°, 20.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 4.14 and would be 6.5 with a perfect subwoofer.
      • Details: NBD: ON 0.427, LW 0.397, SP 0.37, PIR 0.364; SM: SP0.831, PIR0.421; LFQ 0.544, LFX 51Hz
    • Tonality (Preference) Score is 6.35 with an EQ and would be 8.36 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.331, LW 0.289, SP 0.277, PIR 0.237; SM: SP0.98, PIR0.955; LFQ 0.595, LFX 42Hz
  • Link to original Review: eac review. .
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