Alot of folks advocate the notion 鈥渋f it ain鈥檛 broke, don鈥檛 fix it.鈥 The problem with this attitude is if you take it literally, you鈥檒l never improve on what you have. Evidently the folks at Diamond Audio in Chandler, AZ do not subscribe to that theory at all, because they spent 18 months or so working to improve their most popular series of component speakers, the highly acclaimed HEX series. When you have a product that has been as widely extolled as the original HEX speakers, making improvements is not an easy task. The new HEX series midranges use all new cones, dustcaps, and mechanical suspension designs. This means pretty much everything that gave the midrange speaker its own sonic signature was changed. Diamond Audio hooked up one of their very new H600 systems for review, and I quickly set about finding out what鈥檚 what.