Well better and improvement are subjective terms. What I can say is I had been running a pair of A7 (825 cabs) with 416-8C, 802-8G and 511B for several years. I personally like high end crispness. The 511B has phenominal mids but rolls off before i prefer. So I now have custom cabinets using the same drivers, but also incorporates a JBL 077 super tweeter. I like it. The 077 adds the sizzle to the upper end that I like. Will you hear it as much on Van Halen Hot for Teacher? No. Will it open up Dave Brubeck Time Out? You bet.