How much power will I be giving up by switching from Line level to speaker level connections for my sub/mains? I want to run the sub/mains via speaker level to use the lower x-over. Someone tried to explain the process, but I'm not sure I understand. Is my AVR's power somehow wasted because I will be running my mains off of a powered sub instead of the AVR? WIll my sub now be unable to go as low with the same authority because it now has to power my mains as well as itself? Here's my equipment: Marantz SR7000 (100x5 wpc) B&W ASW1000 powered sub(120w) B&W 603S2 mains (8ohm) * I have a small room and have not had problems getting to reference, though I never listen there. I have yet to bottom the sub.