They are a great set of speakers. They originally listed for about $400 a piece when new in the mid 80's. The only issue is that they a bit skimpy on the fiberglass batton inside of the unit, which ment the bass was a bit on the "hollow" side. To remedy this, pull out the fiberglass and redo the who inside with a new layer of glass, top, bottom and sides. The difference is quite noticible. Overall depth is quite improved and so is your listening pleasure. I own four of these, I used them for an original quadraphonic system and have been quite pleased. The RMS for each speaker was only 55watts, but being a ported speaker, that was more than sufficient. I believe they were manfactured as a direct competitor for the top of the line Advents at the time. As for replacement of the drivers, the woofers were 12" and replacements, for the size of the box, were available from MCM electronics with a very close match at a most reasonable price. A very good bang for the buck. Mod them as I have done and I think you will be quite pleased with the end results.
