Did they just stop working, or are they making scratchy noises ?

If both went out together my first thought would be a connector or something on the crossover PCB, and putting the M80 woofer in wiggled <whatever> back into position again.

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