On Tue, 17 May 2011 08:12:37 -0700, Jeff Liebermann wrote:

On Tue, 17 May 2011 08:17:49 +0100, Ian Jackson
wrote:

Is there going to be a prize for suggesting the most obscure (but
effective) way of determining the phasing?

Plug in both earphones or speakers with random wiring and play something
in stereo. If it sounds right, you're done. If the orchestra sounds
like a ping pong game, switch polarity on one earphone or speaker. If
you can't tell the difference, replace the listener and try again. I
hate to admit it, but I've done it this way a few times. I'll accept my
price in US dollars.

If you can actually see the driver diaphragm hook up a AAA cell to the
leads coming from the drive and watch the motion. No different than
phasing regular speakers.



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