i don't think they weigh that much. Probably 65-70lbs each.
Think they are a hair over that, not 92 though. If I remember right the Lvl 5 motor weighs like 80lbs by itself.
Actually, according to the DC site: Magnet Weight 79.5lbs I was close. LOL.
Loving this build, can't wait to see how this thing does for you. You'll love the 9.0's, mine are by far my favorite amp I've ever owned.