I've been researching the DIY forum for some speakers to build. It seems one of the most importan criteria for good speaks is a "flat response" from x to y hz. My question is how does one know if the reciever or amp is sending the speakers a flat sinal that isn't 10db high at 40 hz, rolls way off past 8000hz and looks like a roller coaster in between? I wish you could edit the title so when you screw it up you won't look like an idiot until your post cycles through. Oh well, just call me Duh Collins.