shkong78, thanks for the Youtube clips.
Altec A7’s (with the larger HF horn) where my first PA speakers. When stored in my live in loft I used one for band practice, playing radio, records and tapes in the mid 60’s. I had no knowledge of audio. During a visit by a recording Engineer acquaintance, he relocated the A7’s, my couch and ran lamp wire to the Fisher and holy schitt! The hook went deep, there was no looking back.
Your open space is reminiscent of my loft space. I think I’ve been chasing that presentation for ever. Sadly, that loft was short lived.
In hindsight the fidelity from the simplicity and efficiency of the A7 has always stayed with me. If I had the space...