Hello, all. I posted this in the Electronics & Parts forum also. Maybe that was the wrong spot. Got an old pair of Bose 601's bought new in '77. Two eight's and four 3" in each. Only two tweeters work in each cab. Checked the others-- no workee. The good ones are 8 ohms. I got new replacements but they're 4 ohms. There's only about 5 or 6 parts in the crossover. Can I use these 4 ohm tweeters with the existing crossover? If not, can I replace/add components to the existing crossover to put the speakers back in order? I'm no electronics guy, but I'd feel fairly confident having a go at this with some guidance. The speakers sound really lousy the way they are-- I'd like to restore them. Really. The 8's are also 8 ohm. Any input?