Hi all. Just joined the community and, among other interests, I'm about to take a stab at speaker crossover upgrading. My speakers are Alon Lotus Elite Signatures, which have external crossovers. The air core inductors look like keepers but the electrolytic caps in the low pass circuits, the sand cast resistors and maybe the Solen MKP caps can be replaced with better sounding equivalents. At this point I could use some suggestions for specific components and sources.