Reality: They can, but you need acoustic treatment. Bass traps and diffusion panels prevent "modal ringing." Without treatment, the room will shake unpleasantly; with treatment, 166 sones feels immersive, not oppressive.
For quiet operation, the “best” modern fan surpassing any Sone 166 vintage model would be something like the Panasonic WhisperCeiling series (0.3 sones at 110 CFM) or Broan’s Ultra Silent series (0.7 sones). sone166 best
If you specifically need an original Sone 166 model — perhaps for a restoration or replacement — the best version would be the lowest sone rating with the highest CFM in that product line (check old spec sheets for “166-L” or “166-Q” suffixes, indicating low-noise design). Reality: They can, but you need acoustic treatment
High loudness is useless if it is slow. The "166" threshold requires a damping factor exceeding 500. This means the amplifier can start and stop the driver instantaneously. The result? Drum hits that crack like lightning and bass notes that start and stop with surgical precision. High loudness is useless if it is slow
Best for: Home theater enthusiasts who want cinematic scale.