You may want to check out the Audioasylum.com "high efficiency speaker forum" for info on these speakers. I have only listened to vintage models (in a variety of cabinets), years ago, and they were very bright sounding with shallow bass and had problems in the mid bass area (that was probably a fault of the cabinet design as it seemed to be up too high to be a room problem). I have read about the modern Lowther models, but have not auditioned them. The new models have redesigned voice coils which allow you to tailor the sound to your room and setup and there are many models of both the speakers and the enclosures to choose from. I am not saying that the new versions are bright (as I, again, have no experience with them) and would be interested in hearing them myself. The speakers that I listened to in the 70's and 80's were probably manufactured in the 50's and 60's as they had been salvaged from the used market by some hobbyist's that I knew at the time who were also experimenting with Jensen, Alnico and Electro Voice speakers (pretty sure that those were the brand names).
