I have a wall-arm-mounted TV so I think it'd be best for me to fix my LEDs to a foam ring sitting a few inches away from the wall. This way the intensity of the lights remain constant whenever I pull the TV outwards or angle it around the room (I'll post photos later). I currently have them temporarily fixed to the back of my TV but will be fixing to a more permanent solution once I workout some more kinks.
My question is does anyone know what the optimum space I should leave between the LEDs and the wall should be?
And if I should have them face the wall perpendicularly or at an angle like 30,45,60?