Yeah, I figured "C" would give comparable isolation but would make a mess on your carpet as the EP600 squeezed all the condiments out

Your comments on the improvements from isolating the sub are really interesting. Are you running on a covered concrete floor (ie basement) or a regular interior floor over joists ?

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8