Original poster, thanks for your honesty. You are in rare company! You are one of the rare people who admits to NOT hearing a difference with a mod (albiet internal wire swap is not a major mod). I can't say the same for the other 99% of audio enthusiasts. Realistically, you may benefit a bit from some bracing in those cabinets or maybe a cap upgrade but don't expect miracles. It always makes me a bit leery when I read about a guy who switches to brass screws on his drivers, or uses lead shot instead of sand on his CDP, or some other minor change - remember green markers on CD's! - and suddenly a "veil was lifted" and he was hearing miraculous improvements to a modest system. Give me a break.
I've heard improvements with modded gear over the years, modded Squeezebox, modded CDP, improved IC's, etc. but these were pretty extensive modifications. Several mods I've tried over the years (power cords, internal speaker wiring, external crossovers, expensive inductors, even expensive caps in crossovers, etc.) didn't make a difference as far as my ears could tell. And, like most audiophiles, my tests were not double blind. It's refreshing to hear from a guy like the OP who admits to not hearing an improvement from a mod. He is definitely in the minority and he has my respect!
Cheers,
J
