Sloped baffle

07-07-14: Bifwynne
Thanks again Bombaywalla. I caught the article. It doesn't speak to the impact of the speaker's electrical characteristics on phase coherence.

I am totally confused here Bifwynne!! I don't understand your question - what do you mean by "the impact of the speaker's electrical characteristics on phase coherence"??
I've pointed you to Roy's article that talked about the impact of the electrical x-over on time-coherency.
I've pointed you to Roy's article that talked about the impact of the driver construction on time-coherency.

The x-over is the electrical part. the driver construction is the mechanical part.

These 2 articles should have covered the info you were looking for.....

Bombaywalla, sorry for the confusion. I'm referring to a driver's electrical, not mechanical, attributes. Rather than go off on a tangent, if Al catches these last few posts, he might be able to untangle what I'm trying to say. In the meantime, I'll just assume that the only relevant driver attributes that affect phase coherency are the mechanical points Roy discussed in his White Papers.

OP-

Yes. It is important to have a sloped baffle loudspeaker.
Today's drivers are very advanced in design and construction. Therefore, we (listener) want to get the maximum potential out of them during sessions IMO.

Regarding digital signal processing as it relates to these issues, this from the DEQX website:

"In addition to frequency-response errors DEQX’s biggest strength is restoring phase and time-domain coherence by delaying faster-arriving frequencies until slower-arriving frequencies catch up for a coherent Impulse-response. DEQX even corrects timing delays in frequency groups within the drivers themselves rather than just time-aligning one driver to the next."

Thanks for this info Psag. The DSP software definitely considers having phase & time-coherence as an important aspect of its signal processing so as to have cohesive sound. This should tell us something about the importance of time-coherence in speaker design :-)
Looks like DSP might be the way in the future...