Years ago I had a friend who had a par of Altec A7's in his 12' X 16' living room. Absurd. Speakers I'm familiar with Bozak B-410 Concert Grands. Again need a large room. 4 12" woofers move a lot of air. AR LST. AR 3a's in a larger cabinet with angled extensions on either end with an additional tweeter and midrange dome in each to increase dispersion in the horizontal plane. Acoustat X full range eloctrostat with built in 120 watt tube amps. Quad ESL 57 unsurpassed midrange. KEF Cantata B139 woofer produced the finest bass and mid bass ever. Marvelous pacing so tuneful. Dahlquist DQ10's incredible boxless sound fantastic imaging. I now use Vandersteen 2ce Signatures. All the attributes of the Dahlquist, with much better bass extension and weight, easier to drive and better soundstaging. Any Vandersteen model 2 or 3 definitely worth looking into.