I know what your saying - I haven't actually read through that entire document either, maybe there was a whole lot of rubbish in there that I didn't see. I was just thinking that this 'transient perfect' crossover would get rid of one less phasing source to deal with - the crossover. Obviously there are still phase shifts from the driver/box though, but the final phase shift of the loudspeaker with that crossover must be less still than with the other types that we are already familiar with.

I'll probably never try out that crossover though, the stuff we already use sounds good enough to me when done right!

Adrian