I recently purchased a ViewSonic PJD7820HD DLP projector. I got some 3D glasses that were recommended for it on Amazon initially and they work great but, due to my massive noggin, they weren't very comfortable. I found some "large" glasses that were supposed to be universal. Everything in the product description indicated they would work with any 3D DLP projector. But they won't synch up. The glasses are Xpand X104LX2 YOUniversal 3D glasses. I tried the autosynch mode and all of the manual synch options. No dice. Anybody know a way to fix this? Or can anyone tell me if they are simply not compatible so I can return them? Also, is there any surefire way to tell which glasses are compatible with which projectors/TV's before you buy them? I can't seem to find anything that explains this very well. Any help would be greatly appreciated. Thanks!
There are various types of glasses that will work with DLP Link technology; I used to own a couple of pairs of these, but got rid of them because they were too large for me and I found them quite heavy:
We, The Unwilling, led by The Unknowing, are doing the impossible for The Ungrateful.
You can tell if you have dlplink if the screen in 3D mode, when looking without glasses, has a white or other color cast to it that makes the image have very weak contrast. That is caused by a sync flash that makes the glasses work and disappears when the glasses are put on. If you do not see this and just a double image with normal contrast, then you would have an active shutter 3D setup, which requires an infrared or RF signal that syncs the shutterglasses. Sometimes this is built into the projector, but usually requires an external dongle connected to the projector and you have to switch to active shutter mode.