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ially, the stereo panorama reflects the horizontal plane of the imaginary sound stage. One of the main roles of pan pots is to determine where instruments are positioned on the stage. Just like on a real stage, listeners expect to find the most important instrument in the center of the mix – be it the vocalist or the trumpet player. Also, if we imagine a five-piece rock band on a big festival stage, it is unlikely that the two guitarists will stand on the stage edges; it is more likely that each will be somewhere halfway along each side. Many more examples can be given, but contemporary music is not always mixed to the full realistic extent of a live performance – if the guitars sound better when panned e...

From

Cover of Mixing Audio, 2nd Edition

Note

Panning Laws