crossover for 4ohms/6ohms components

[dvir_it]

Hi,

I have the following MB Quart component set:
Midbass - 6.5` "QM 160 competition"
Tweeter - 1.25` "QM 25 competition"
Crossover - "competition two way"

My crossovers were damaged and I need to replace them.
I can't find the same crossover like I have now.
I tried to find new MB Quart crossovers but the problem is that my 6.5` midbass speaker is 6ohms and not 4ohms like the new MB quart's sets (i didn't find new crossover for 6ohms midbass).

is it O.K to use a new crossovers for my sets?
thanks
dvir