In Reply to: Looks lIke........ posted by Harry Butts on November 6, 2010 at 11:54:11:
Some designs tried to (and failed) to compensate for group delay (crossover phase shift induced time delays) by offsetting drivers beyond that required for time alignment. This, of course, does not work since phase roll associated with higher order crossovers essentially MEANS non-constant group delay, aka the group delay is frequency dependent.
If the group delay was not frequency dependent the laws of the universe would be different and speaker design would be a whole lot easier.
Speculating on the design with nothing other than appearance, though, it pointless. For all we know they could employ special active or digital crossovers.
Cheers,
Presto
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Follow Ups
- RE: Looks lIke........ - Presto 14:48:39 11/10/10 (0)