Tommy in Quintophonic Sound!

[Kevy Baby]

Originally Posted by innerSpaceman

Um, just what exactly is Quintophonic sound?

I was curious earlier and did some (very brief) research. Quintaphonic (notice that the original link spelt it rong) was something used for the movie Tommy only (or mostly only). From here:

The QS matrix system was employed to create the five-channel Quintaphonic Sound system used for première engagements of the 1975 film Tommy. The left and right 35mm magnetic soundtracks were QS-encoded to create four channels around the cinema audience, while the centre mag track was assigned to the speaker behind the screen. The mag FX track was unused. This channel layout came close (5.0) to the later usage in video 5.1 surround sound.

Basically, it was the quadrophonic soundtrack with a fifth track for the voices in the movie.