Buy a pair of JanZen D-130 electrostatic tweeters! These were used in days of yore to improve the treble of Acoustic Research and KLH box speakers. Unfortunately long out of production. I have a restored pair, along with vintage AR's and KLH's!
Shortcut or badcut?
Is there some point to try to add a bit more air to my speakers, using the 'second set of speakers' switch on my receiver? If I punch on speakers 'A' AND 'B', with a set of same-impedance, higher-reaching speakers (maybe just some smaller units) on the second button, would that possibly attain my result, or is this just a bad idea?