Concerts are actually reproduced from stage right and left speaker stacks running in a stereo mix. The engineer (the guy sitting in the audience working from a mixing console) runs the show in stereo but mixes it so that there is directionality from the speaker stacks and on-stage amps but with a view towards mixing the show to make sure even those in far right and left seats can hear everything. Bottom line result is sort-of stereo from the front and sort-of mono from the sides.
Nwext time you are at a show ask the engineer before the show when he at the console waiting for the houselights to go down (but not too close to the start of the show). Having worked many years with them they are generally friendly and will answer simple questions.
Nwext time you are at a show ask the engineer before the show when he at the console waiting for the houselights to go down (but not too close to the start of the show). Having worked many years with them they are generally friendly and will answer simple questions.