A 2nd center channel on the ceiling and the primary center channel on the floor seems very absurd! Stop complicating things, lose the 2nd center for a minute and get a good stand for the main center channel sitting on the floor. There are good stands with angle spacers that should help you aim it directly at your ear level.
If the above mentioned change is insufficient on its own, boost the center channel level by 3dB or more when you’re watching movies (after you've run your receiver's calibration). Have you tried this before?
You don’t mention what receiver you have. But, as an alternative to boosting center channel levels, receivers like the Yamaha Aventage series have features like dialogue level boost (0 through 3), dialogue lift, etc (VERY USEFUL IMO) on the digital end that you can play with. See if you can get your hands on a Yamaha RX-A3080 if you don’t have one. It has enough features to overwhelm a noob, But, these features are soooo useful once you figure out how to work it.
If the above mentioned change is insufficient on its own, boost the center channel level by 3dB or more when you’re watching movies (after you've run your receiver's calibration). Have you tried this before?
You don’t mention what receiver you have. But, as an alternative to boosting center channel levels, receivers like the Yamaha Aventage series have features like dialogue level boost (0 through 3), dialogue lift, etc (VERY USEFUL IMO) on the digital end that you can play with. See if you can get your hands on a Yamaha RX-A3080 if you don’t have one. It has enough features to overwhelm a noob, But, these features are soooo useful once you figure out how to work it.