If one location is packed full and a second location in the same room has very little insulation then the difference in bass response will be.
In ceiling speakers and insulation.
I have 4 ceiling speakers.
Connect speaker wires to amplifier or receiver and test for sound.
Consider installing some insulation r 13 in the wall cavity behind the speakers to improve sound quality.
They will fit a much larger speaker than my 9 speakers so they are rather universal.
We recommend using the same amount of insulation for every speaker location.
2 are about 4 feet in front the screen and the other 2 are right behind the main sitting area.
In wall and in ceiling speakers are the ideal solution for this by which you can have speakers and wiring hidden inside the walls.
However in wall and in ceiling speakers have certain inherent disadvantages the first being the loss of sound quality.
Can i install these speakers if i have blown in insulation.
Ways to keep insulation and in ceiling speakers from touching before beginning any of these methods you will need to place your speaker.
These worked well enough to protect the in ceiling speakers that we installed in our media room.
You want to strike a balance between an appropriate place to put your speaker for your home theater sound and a location where there are no wires plumbing or joists behind the drywall.
Like others i ended up sealing not ceiling these to the sheetrock with silicon sealer to keep the insulation dust debris out.