Hi Marakanetz,
I suppose, as mentioned above, some engineers probably mic an orchestra that way, but many of the best classical recordings are very very simple...one to three mics...that's it. The band practices (with the conductor) to make sure that all of their individual volume levels are appropriate for various movements. That's all part of playing in an orchestra. If the hall, orchestra, and conductor are decent, the sound should be balanced without any technical tricks.
I suppose, as mentioned above, some engineers probably mic an orchestra that way, but many of the best classical recordings are very very simple...one to three mics...that's it. The band practices (with the conductor) to make sure that all of their individual volume levels are appropriate for various movements. That's all part of playing in an orchestra. If the hall, orchestra, and conductor are decent, the sound should be balanced without any technical tricks.