If Dennis Murphy has a few moments I think it would be fun to hear the answers to the following:
* What crossover design are you most proud of and why?
I'm going to say the the SoundScape, because Jim would get really ticked if I didn't. But in truth I put the same amount of time and effort into every crossover, so the results depend more on the inherent quality of the drivers than anything else.
* What's the most remarkable crossover design you've seen by somebody else?
Probably the new Vandy 7, although I would have to have a pair in my living room to make sure. In Denver it sounded absolutely neutral and cohesive, and that's really hard to pull off when you're using first order acoustic slopes. Probably the most innovative was the Dalquist DQ10 from around 1970. It was the first to try and achieve time alignment and phase coherence. Some of the drivers had problems, however, and I actually preferred the KLH 5 and 12 (identical except for cabinet). They didn't have any computers and didn't know much about baffle step compensation, but somehow they got the two mids, tweet, and woof to work together with no colorations or other funny stuff.
* What's the worst crossover design you've come across in a cheap speaker?
Probably a white van job that the neighbor kid traded in his golf clubs for. I redid it for him, but I think he preferred the original. Boom, squawk, sizzle.
* What's the worst crossover design you've come across in an expensive speaker?
I don't think they make these anymore, so I guess they're fair game. That would be the Norh 9.0 Marble. They went to the trouble to hollow out a solid piece of marble to produce an inert cabinet, used the best Scan Speak drivers available, and then threw in a crossover that produced a dip the size of cleveland. http://murphyblaster.com/content.php?f=marble.html