Bay Star - Bad speaker acoustics

[MikeD1]

Originally Posted by Ranger John

I experienced the same issue on my 2017 Baystar. During a warranty follow up at Napannee they shoved batten insulation in the hollow compartment and this resulted in improvement but not elimination. I think you have to open up the compartment directly above the speaker allowing relief of vibration. When I get my unit out of storage next month, I plan to remove speaker then carefully drill holes using an auger bit. That is my plan but haven't executed yet

You can certainly try that, but you may lose quite a bit of the bass response. I think "tightening" the structure up and adding some damping material will probably be more effective.