Not sure about the advice on aiming off the back wall. I usually suggest a wide field in the back if you`re kinda close to the back wall with the sofa. But for aiming of ceiling speakers, we do have a great new option.
I need speakers for my home theatre room it is 12X14. They need to be in the ceiling. I have been told that I should aim them off the back wall. Do you agree and what speakers would you recommend.