A lot of full range speakers have mid range, but a lot of them don't. I was wondering how important they are. I always thought that it would be a good thing to have one. But, a lot of the top of the line speakers from brands like infinity just have woofers and tweeters. So, it makes me wonder if midranges are important if good name brands have their best speaker with only woofers and tweets. And, a lot of nice systems have component system, which is just a woofer and tweet, no mid range. Anyways, do any of you all know? How much do they help and why do some of the most expensive speakers not have them?