These are great speakers. Very sensitive and clear with built-in adjustable sound. I've recently replaced the tweeters with newer tweeters and that improved the sound quite a lot. I've used them a lot and they are in excellent working condition, I'm selling several speakers (and other audio I've collected here and there) and these were harder to let go than some of the newer speakers). I believe they originally cost about $500 in 1979. Check the pictures to see how they look; I think they look good, especially for their age. Feel free to ask questions. Looking at past and current auctions, I think these are better and cheaper than the others I've found.