Then I will assume the M3s I have are v4. They have a metal tweeter with a mesh center screen and I will assume these speakers have the newest crossover(v4). My M80 EP800 VP180 and QS8 system is over 5 years old but the M3s are only a couple years old. But I guess they could be v3 crossover with the newer tweeter. I will email Axiom, see if they can tell me.