Xover parts quality,/sound difference?

JD - be careful how much you play with the internal guts and wiring. I have been advised that even changing from a slide-on spade connector at a driver to straight soldering could change the impedance characteristics of that driver, and therefore alter the way the crossover was intended to work by shifting what it passes either up or down or widening it range too much.

Disclaimer - the above statement may make it sound like I know what I am talking about, but I assure you that I do not. I am just regurgitating what a very reliable source had told me.

Perhaps Sean could elaborate with more credibility.

JD proposes to

experiment(...) with different wire types, gauges and configurations to optimize the sonics

Actually that can as much fun as it is frustrating:) As you are very thorough, patient and persistant, I don't doubt you'll get optimum results.
Much of the frustration IME came from playing with guages (I gave up on playing with different matls and used single core copper, twisted of course): thinner wire for the tweet--> better hi-frequency BUT also increased resistance... so, there goes my xover point (& amplitude & power response patterns). The differences are slight mind you, but in the tweet's case for example, 1 measured 1db down in amplitude response. Fortunately, I had a L-pad on the tweet that, amazingly, helped out beautifully.
Cheers

Dbld: Most commercial designs are SOOOO far from being electrically optimized that just covering the basics i.e. better connections, better conductors, shorter signal path, etc... will almost always introduce better sonics. Parts tolerances and methods of construction vary so much from unit to unit ( in most cases ) that the small amount of error / variance that a "tweaker" may introduce becomes negligible in the grander scheme of things.

Obviously, as one gets into more precisely designed componentry, what would normally be considered a "subtle" change might manifest itself to greater degree. This is why i recommend keeping maintaining a log with diagrams PRIOR to doing any mods, so as to document what goes where and how each change alters the performance. If one wants to obtain greater precision and detail, they have to be more precise and pay attention to details. Sean
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Are there any updates from anyone?