To add my 2 cents, I have the HF 70 gallon dust collector (no modifications) attached to my baby shark SD100. Using a Bosch 1 HP PR20EVS router with a dust skirt.
The 73db reading was taken with my iPhone dB meter app with the phone sitting on the motor.
The 72dB reading was taken with the phone @18” from the router bit, router, dust collection on, and running a Chamfering path on Dougles fir (pine).
I still use my 3M Work Tunes blue tooth head set.
