What's the best method for really tweaking the output level of HT speakers? I've set mine "by ear" only. When I run the test tones, my center sounds brighter than the mains. How do I adjust that? All the speakers seem to be at about the same/appropriate level but I know I could do more. Do I need an SPL meter or a setup CD or both or none?? I have M60s, VP100, QS4s and an HSU STF-2 sub with a Yamaha receiver (I think it has a setup EQ for the center).

Thanks everyone...