Respironics official noise level for M Series Auto

[Paul B]

Has anyone seen anything authoritative on this number? I can't find anywhere where Respironics states it in print. I tried calling tech support and got 2 different answers.

The Resmed S8 states that radiated sound pressure is < 30dBA @ 10 cm H2O and 1 meter height.

I've seen 36 dBA for the Remstar Auto previous version on another site doing a Google search. The fact that Respironics doesn't publish the number makes me suspicious.