Thanks for all the kind replies. I have to correct the room height: 8.2 ft not 82 feet, of course. They are now placed on the long side of the wall in the corners. But not sealed into the corners, therefor no low frequency gain. Basstraps?I have a rendering of what the ideal room treatment would look like (see attachment). The drivers seem to all be in working order. Regarding the AK-3 crossovers I am not sure Klipsch built those pre 2000?
They have not been tampered with. I am only the second owner.
As far as the sound: thin bass, nasal vocals, flat, muffled, little dynamic range, lack of warmth and roundness, just not 'present' or
life-like sounding,which is how I heard them sound in a different space, also with Jadis Orchestra. It's hard to tell the male from females apart in a chorus, for example.