I bought a set of RTA-12B speakers on Craigslist. Something is wrong with them, tweeters aren't playing. I only paid $50 for them so I'm looking at this as a project. I'm hoping the tweeters aren't blown as they are the peerless. The 3/4 amp fuses were still in and they weren't blown so I'm hoping the problem is in the crossovers. I've dug out my soldering iron, solder sucker, VOM and have a capacitor checker. Anyone have experience rebuilding the RTA-12B crossovers?