SunAudio Purified 4 4XA25A Alu+Alu is a passive bookshelves that cost around 3300 USD for a pair.

  • Quality of the measurement data is high.
  • Origin of the data is SunAudio.
  • Format of the data is a set of 36 horizontal and 36 vertical measurements .
  • Sensitivity:
    • Measured: 71.4 dB (avg. 300Hz-3kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 71.3Hz (resp. 62.6Hz).
  • Reference level is normalised to -0.1dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.0dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 6.48 and would be 9.21 with a perfect subwoofer.
      • Details: NBD: ON 0.186, LW 0.114, SP 0.137, PIR 0.095; SM: SP0.981, PIR0.985; LFQ 0.489, LFX 62Hz
  • Link to Original review.
  • Note: Version with 25mm aluminium tweeter (BlieSMa T25A-6 tweeter) and aluminium woofer (Purifi PTT4.0X04-NLC-04). Crossovers are at 2200Hz and 4145Hz. Measurements are done with a Klippel NFS from https://www.dausend-acoustics.com/.
SunAudio Purified 4 4XA25A Alu+Alu
Quick config:
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