Great post by Bombaywalla, IMO. And as is nearly always the case, I agree completely with all of the technical points he makes. Including the basic point that having a first order crossover (or no crossover) is a prerequisite for time coherence.
For those who may be interested in reading further on the subject, and who haven't already seen it, the recent "Sloped Baffle" thread, and the links provided therein, are highly informative and will keep you busy for quite some time!
In seconding Bombaywalla's technical points, though, I should add that I take no position on the relative importance of time coherence among the great many tradeoffs that enter into the design of a speaker. On the one hand I consider that his breadth and depth of relevant experience and knowledge gives his opinions on that question considerably greater credibility than most. On the other hand, the fact that only a small minority of audiophile-oriented speakers have first-order crossovers, or no crossovers, and only some of those are truly time coherent, can reasonably be taken to signify that (as might be expected) there are multiple paths to success. And to failure as well.
Regards,
-- Al
For those who may be interested in reading further on the subject, and who haven't already seen it, the recent "Sloped Baffle" thread, and the links provided therein, are highly informative and will keep you busy for quite some time!
In seconding Bombaywalla's technical points, though, I should add that I take no position on the relative importance of time coherence among the great many tradeoffs that enter into the design of a speaker. On the one hand I consider that his breadth and depth of relevant experience and knowledge gives his opinions on that question considerably greater credibility than most. On the other hand, the fact that only a small minority of audiophile-oriented speakers have first-order crossovers, or no crossovers, and only some of those are truly time coherent, can reasonably be taken to signify that (as might be expected) there are multiple paths to success. And to failure as well.
Regards,
-- Al