When new they were very popular and well respected. I didn't like the multiple tweeter use in the model III at the time, but other than that they were giving AR, KLH , EV, Boston and others a real run for the money and winning most of the time. Yes, the speakers will need a crossover rebuild and hopefully none of the drivers are damaged because there aren't new easily replaceable drivers. That is unless you have your own test equipment. But then, maybe you will get lucky. Dealing with ancient compromised speakers can be a real challenge for the novice.