I've had my new (from ubid) Emerald Mark IV 99's for a few days. I bought these for my secondary HT area but my primary music listening setup. I am going to team them with a HK 520, but it's not here yet so I've got them hooked up to a Sony DB930 for now. Out of the box I find them a bit forward (not in a bad way) with great tight bass. But the big negative so far is the sissle on human 's' sounds. Really distracting. I am really hoping the tweeters mellow out a bit. What's interesting is if I listen to instrumental jazz, these speakers sound simply fantastic. As soon as a vocal starts it ruins it for me. Anyone else experience this? At this point I'm thinking of experimenting with replacing the tweeters. Am I nuts, or will these things break in eventually? Thanks..