Originally Posted by baloo_btru
I'm using the internal emitter. I can't justify buying the external emitter as I watch 3d very, very rarely (in over 100 hours this is only the second time I've tried). I'll think about it and try out the ps3 glasses later to see how they hold up too.
In the absence of an external emitter, you best step to improve the reliability of the sync signal, is to sit closer to the screen while watching 3-D. The strength of the sync signal reaching your glasses is a function of 3 main parameters:
1. The strength of the emitted signal (external is much stronger than internal)
2. Distance the sync signal has to travel (for the internal emitter this is equal to the distance from the projector to the screen PLUS the distance from the screen to the glasses).
3. The reflectiveness of your room.
If you are unwilling to purchase an external emitter, you won''t be able to do anything about parameter (1).
Sitting closer to the screen will reduce the distance that the (reflected) signal has to travel and improve sync robustness.
The reflectiveness of your room is largely determined by your screen gain. However, you can improve it by placing temporary reflective surfaces just above your screen. This is most effective if your projector is mounted close to or above the upper edge of the screen.
My experience was that moving to my front row (about 10 ft from the screen) solved my sync problem.
I also found that the aluminum foil trick solved my sync problem, even when I was seated in the back row (about 17ft from screen).
In the end, I was unwilling to live with either of those 2 solutions and sprung for the external emitter. I have had no sync problem since.