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RE: Very common to confuse the two.

Posted by Tony Lauck (A) on December 17, 2009 at 17:36:01

In Reply to: Very common to confuse the two. posted by Presto on December 17, 2009 at 16:56:26:

After you adjust the delay in the signal to the drivers you will get equal delay only when the listener is equidistant between the two drivers. If the listener is elsewhere then there will be frequency dependent interference, a.k.a. comb filtering. A small digital delay isn't likely to be much different than moving your ears up or down a few inches (assuming the two drivers are in a vertical line). That's not to say that it may not be more convenient to tweak some filter coefficients than tilting speaker cabinets up and down (or adjusting the number of books one sits on...).

As to absolute polarity, it will be difficult if not impossible to hear on a speaker that isn't phase coherent. On the other hand it may be easy to hear on a single driver table radio, despite its lack of frequency extension due to the single driver and lack of crossover.

Tony Lauck

"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar

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