I had my original Carver Amazing Loudspeakers hooked up to a 1000 W per channel Carver CTS 2000. That was the best they ever sounded. The really came alive with the bigger power amplifier. Very fast and accurate bass. They were clean and coherent at any volume.
If you can get them for free, you may be able to find the original woofer for each cabinet, remove the lower driver, plug the hole where the lower woofer is, and bring them back to original working condition.
I believe that those were ESS AMT1 towers. They were originally supposed to have a single 10 inch woofer in a quarter wave transmission line with an AMT up top. Those appear to have been bastardized by a teenager that had no clue of what he was doing. They are totally ruined. I would have to...
Bose always has their own dedicated listening room. Bose will not allow another speaker to be auditioned in the same room, at least that's how it was when I worked in an audio store and sold Bose.
We actually did some side by side comparisons and the Bose products did not fair very well.
To...
I believe this is a better option than an electrostat.
https://www.precide.ch/eng/eheil/eheildetails.htm
https://www.tnt-audio.com/casse/ess_amt_e.html