While they were the size of a refrigerator, with long ribbons and 4 woofers open firing both front/rear. They were inefficient as hellll and I was feeding them 1500 watts each with Carver PM 1.5's bridged mono. The sound stage was fantastic, transparent, and simply stellar
The Classic and Original Carver Amazing Loud Speakers.
https://www.audioresurgence.com/2014/05/gilmore-audio-and-carver-amazing-speakers.html