Originally Posted by nickoakdl
I'm pretty sure they both need an emitter for RF.
You are correct, I just verified this in an online chat with Optoma.
"yes it does require an RF emitter You: ok, thank you. The last question, it seems as though the two projectors are nearly identical, and even though they both use the same bulb (correct)?, the HD25e "magically" has higher lumens and contrast ratio (just looking to get a brighter 3D image, so leaning towards the HD25E) :-)
I've been online now for about 45 min. after asking the above 2nd question. At first, the guy tried to tell me that the HD25E uses a different bulb, but I let him know that the site comparison shows that they do. (In addition, if you go to accessories for each, also the same lamp) So... I will reply when I get the official answer (and I'm curious if he'll go on the explain how the HD25e achieves the better lumens/contrast ratio)