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Absolute polarity . . .

. . . is one of those "iffy" areas of perception. It has been proven in blind tests that a small percentage of the population (mostly professional musicians, with perfect pitch for what that's worth) CAN consistently hear the difference between normal and reverse polarity, but only with certain instruments like trumpet and chimes. The majority of people can't ever hear the difference, and a few can hear it sometimes but not always--possibly depending upon the resolution of the playback system.

You can easily configure your system for correct polarity, if you know which components do and do not invert phase. For instance, if your source component is known to output the signal in correct phase, but your pre-amp inverts phase, and your power-amp inverts it again, you know to hook up your speakers to the amp in "normal" phase (+ to +, - to -). But you're still at the mercy of your recordings, which may or may not be in correct polarity. In the case of multitracked recordings, some instruments and voices may be in correct polarity and others reversed.

This post is made possible by the generous support of people like you and our sponsors:
  Atma-Sphere Music Systems, Inc.  

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