Try putting up a mirror at 45 degrees and give it a try. I have a similar problem with my bedroom system, and I get decent results just aiming the remote at the wall, near the ceiling, opposite the components, which are 90 degrees from my bed. Not even a mirror, in my case. Cheap, simple and perhaps all you need.
Need remote control advice
I'm getting ready to buy a learning remote to control all of my components and have a situation where my audio components are in a cabinet that is at an angle from the listening position. I have to lean forward to change the volume which is a real hassle. Are there remotes that have stronger signals or is there another solution? Thanks in advance.