Do You Need Audio, or 3D Support?
Powered External Speakers
Not all projectors have audio capability, and for those that do, the audio is sometimes all but useless—particularly with highly portable projectors. If you need sound for your presentations or for watching video, make sure that the built-in audio, if any, is both of high enough quality and loud enough to meet your needs. Alternatively, consider using a separate sound system, like powered external speakers.
One Of The Leading – Edge Features
Showing images in 3D for educational, business, home video, and game applications is one of the leading-edge features for projectors today, and more and more projectors are claiming to be 3D-capable.
3D-Compatible Graphics Card
Several 3D schemes are available, so just because a projector is 3D-ready doesn’t necessarily mean it will work with the 3D source you want to use. For example, a given projector may work with TI’s DLP-Link, which requires a computer with a quad-buffered, Open GL, 3D-compatible graphics card, but not work with a 3D Blu-ray player. The good news is that a growing number of 3D-capable projectors can project 3D content from a Blu-ray player, TV set-top box, or similar image source. If you want a projector for 3D, make sure it will work with the specific 3D image source you plan to use it with.
