honest answer is maybe.
sometimes the parts that create the crossover will accept 4 - 8 ohms
sometimes the ohm rating is wider.
sometimes it is 4 ohm only because the pieces work very narrow.
you could read the instruction manual.
you would need an oscilloscope and a multimeter to test the ohms.
final output phase check.. as well as knowing the ohm load the amp can see.
these are very helpful to determine if it is completely safe or a completely bad idea.
i would say hook it up and try it.. but i dont have any experience doing that.
and i know how bad things could go.
maybe you tear the voice coil
maybe you overcook your amp
maybe you overcook the crossover and REALLY overcook the amp
maybe the amp and crossover is safe, but the tweeter sounds desperately wrong for the next 3 years.
if there is enough electricity.. mixed with something flammable..
you could start a fire if the crossover dies from melting or sparking.