If you can get past his self promoting BS this is a good site to get some info too.
how you physically arrange the network plays a significant role, there is a lot happening
here is a video that he shows the effect of different component layouts.
DIY Replacing Components in Crossovers
I have a couple pair of old speakers that I'm thinking about tinkering around with by replacing existing capacitors and/or resistors with different brands just to get a taste of how different higher quality parts affect the speaker's sound. I don't have any interest in redesigning the crossover networks, only to replace existing parts with better quality parts with the same values to see what kind of results I get. Soldering and the mechanics of replacing the parts isn't an issue for me but I just don't have much experience with the sonics of individual parts. Have any of you done this before? What has worked for you? All things being equal, do you hear much difference replacing crossover parts with better quality components? Any stories to tell? Thanks for looking.