Flatscreen between speakers

I am planning to use a pull down TV wall mount that is built to allow a TV mounted above a fireplace to be pulled out and down. 

Instead of mounting a TV on it, I would mount a diffuser slightly larger than my TV that would be above the TV when I am watching television and would swing down to cover the Tv when I I am listening to music.

My only concern is that the TV would be too far off the wall when is is the down position. to that end i am still looking for one that swings more "down" and less "out".

@tony1954. You might have to build whatever you want. Set your design parameters then solve them one by one. Mine were that the gadget be light, not expensive, functional and elegant. I have achieved all of them to varying degrees. Some were even exceeded. Like I said, you might have to create it yourself. Good luck. 

@spenav 

Had a look at your setup and your solution with hanging a panel on the TV seems to be a more practical (and less expensive) solution.

If I make it so it can either hang the panel on a French cleat situated above the TV when I am using the TV, or hang it on the TV itself when listening to music, then It should be the best of both worlds.

I had this exact problem for years (dual use hifi and home theatre) and it can be overcome without room treatment or tv covers.

Proper speaker positioning. I use Ron’s LOTS method - he has a video on YouTube. Once dialed in the difference between an open and holographic soundstage and something bland was as little as 1cm in positioning.

Funny thing, I once got my speakers setup perfectly, then 6 months later upgraded the tv from a 55” curved to a 65” flat panel. This single change was enough to destroy all that work and the glorious soundstage I had.

But it shows how critical the speaker positioning was to overcoming the centre reflection issue.

I  also had a tv cover custom sown and tried it after optimising with the LOTS method. It actually made things worse, because the positioning had already been done to account for the tv reflection. That’s also why changing to a different tv size had such an effect.