The industrial type you describe were built for portability. Some later versions came apart into a top and bottom half. They are not identical in terms of the cabinet, of course, but the drivers are all the same (which, as you know, varied over the years of production - they are still being produced today). I'd concur on the K55M mid and the K77m tweet (which is the first thing I'd replace for a large improvement), but I'd say the AA crossovers were the better version. I'm not familiar with your Tuner, but most tube amplifiers are an ideal match with LaScalas. I'm not a fan of SS amps with Klipsch horn loaded speakers. I have heard McIntosh SS sound good with them though. Prices for used LaScalas are all over the board. I'd say on average they go for around $ 1200-1400 for 80's stuff in good condition. Shipping is a bugger as they're heavy and large.
Plenty of info and opinions on the Klipsch forums if you can figure out their search engine.
Good luck.
Plenty of info and opinions on the Klipsch forums if you can figure out their search engine.
Good luck.