On 16/02/2015 19:27, Jim Brown wrote:
You (and Heil) are using the word "phase" incorrectly when you talk
about "reversing" it. What that switch is doing is reversing the
POLARITY. Polarity has two values -- normal and inverted. Polarity is
the same for all frequencies. Bob Heil, who claims to be the audio
guru should know better -- the word polarity has been used in this
manner in pro audio for nearly 40 years.
I understand the word polarity and I understand the word phase after 40
years in the audio industry I've never known a loudspeaker (or other
transducer) to be out of polarity.
From Wikipedia: *"Phase difference* is the difference, expressed in
degrees or time, between two waves having the same frequency and
referenced to the same point in
time.^<http://en.wikipedia.org/wiki/Phase_%28waves%29#cite_note-Ballou2005-1>
Two oscillators that have the same frequency and no phase difference are
said to be *in phase*. Two oscillators that have the same frequency and
different phases have a phase difference, and the oscillators are said
to be *out of phase* with each other."
Clive G8POC
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