I have a Denon x4400 and Sierra 2EX for my LCR. I currently have them set to crossover at 60Hz. I’d like to get a little more volume out of them. I have a decent sub (Hsu VTF3 MK4)...would crossing the Sierras at 80Hz give them more volume because they can concentrate on the higher frequencies and put less energy into the lower frequencies?