Acoustic Zen Crescendo speaker crossover capacitors ... who makes them?

@grannyring 
Congrats on your upgrade... its really satisfying to make these changes and really hear the results of your effort...
I've built many a speakers, so just a couple of comments from the thread...
The parts quality does matter incredibly much so, I don't want to take away from that,  but when it comes to really improving soundstage and placement.... hand matching quality parts in the crossover to 1% or less makes more difference than the Ultra Uber expensive parts.
Linkwitz Riley 3rd order:  Joe D'Appolito is the innovator of the MTM design, he originally used and still always suggest a 3rd order butterworth for MTM.... I have used Linkwitz Riley Alignment with great success in MTM also, but LR does not offer a 3rd order alignment.
You have modded with what are most likely the best sounding parts available... Enjoy my Audiophile brother,  Nicely done.
Tim

Nice post and thanks Tim!

Enjoying  my music again tonight. Cassandra Wilson night. So wonderfully beautiful as she is in the room with me. 

Tonight we have an additional 70 or so hours of burn in. The sound has changed a bit. Even more relaxed, in a good way, and even more natural sounding. The sound has opened up a tad and is just wonderful. I find myself listening to recordings that in the past sounded marginal at best. I find I can now enjoy these less than ideal recordings like never before. 

What I love most is how real my music sounds. Real and engaging in a special way. Instruments and voices do not sound recorded, but real in my space. 

Bill,
When terms such as "ralaxed",  "natural", "real " and "engaging" are used to describe what you hear, you're on the right path . The truly excellent audio products always seem to improve in this direction. 
Charles