You can, but your hardly ever using all 10k. He might as well save money and do a 6-8kw setup and not have to worry about hurting things as much and save some money. Even if these subs can "handle" this power, we all know it's well into all kinds of power compression at that point (thermal/bl). He'll be just as loud on a significantly smaller amp (i bet he gains around .5db between 6k and 10k) If he isn't going to add a sub or go to a 4inch coil, then it's a waste in my eyes.. But I'm on a budget recently so maybe that messes with things lol.