Quote Originally Posted by sebackman View Post
The left and right speakers will be rather shallow to look "smallish" on the wall. I know that will impact low end but with DSP and reasonable amount of power in a normal living room I think I can compensate for the fall off below 200hz. I will XO @ 70Hz towards the subs. I hope that will be fine.
I have found shallow boxes to allow more midrange coloration to reflect back through the LF driver's cone. You may want to explore internal diffusers or Sonex foam on the back wall of the enclosure to help mitigate this.

Have you mocked them up?