Location Surround Sound
Recording in the field for true 5.1 Surround can be done with little more complexity than recording mono. SMS uses a Schoeps M/S stereo boom to capture all the information you need to produce true 5.1 surround during post.
Using only two recording channels in the field, this method maintains the mono source (usually for dialoged) on it's own channel, while capturing all of the direction & distance information necessary for surround sound in the post process.
SMS can consult with your post production facility to demonstrate all the advantages of using the M/S Stereo recording technique.