What method and materials did you use to finish up your Atmos speakers once they were in the ceiling (grill cloth, etc)?
I'm installing my Volts in the ceiling the same way you did, except my first layer is drywall, not osb. I was also considering finishing the speaker first, installing the front baffle/crossover/stuffing and then placing it between the hat channel so the speaker baffle face will be flush with the first layer of drywall. Is there any reason NOT to do it this way?
I have yet to find any build threads that give a dedicated and thorough description of the ins and outs of atmos ceiling installation while preserving soundproofing...