Here's my setup: Mains: DefTech BP2000 Center: DefTech CLR2002 Surround: DefTech BP2X Receiver: Low-end Pioneer 557 (will be replaced very soon by the H/K AVR-520). I know there is a lot of debate about setting the mains to "small" or "large." I don't have an external sub and really don't think I need one--the BP2000's are more than enough when set to "large". My question is about the connection to my receiver. Any recommendations on whether to just connect the speakers normally or use the sub out? I'm trying to get everything set up right and I'm probably not even using the right terminology. These speakers are great, but I don't feel like I'm taking advantage of them. Any help is greatly appreciated.