just curious i see your monoblock is a 600w@4ohms
and the Subwoofer is a 800w.

could this be considered too different?
usually the amp should not be more than the woofer because you can blow it out. but if its too far less than the sub will not recieve sufficient power to produce good quality and will work handicapped.

or 75% enough power good enough.

in the past i always matched them although i never needed anything over 250w, so i would get a 250w for both