Either the speakers are too small or the queen's too strong.
It took four of us to lift the BB5s onto their stands.
Admittedly i was rather paranoid about anyone slipping and letting my babies get scratched.
LoL, Be VERY careful with those factory frame stands, especially if you're isolating the spikes with funny blocks of exotic material. Because the 'missing corner' is on the base of the BB5 cabinet, making it rather unstable when compared to MB2i on the same stands.
If it fell, it'll be the loudest ,most nerve shattering, earth shaking noise you ever heard. You better pray that the floor (or wall) is strong enough to survive the 'knock'

My friend accidentally knocked over his BB5 once, and the BB5 won the battle against the hollow back wall. It knocked a big hole in it.