I think this if you heard the speakers, you wouldn't be too concerned about this. I have Stage 4's, and based upon the graphs thought I might add a supertweeter. I even found a JBL part looked very good. I gave up the idea as soon as I heard speakers I built. Although there are some who think the superhigh frequencies have some subconcious affect or affect the lower vibrations or something, and they might, I don't prefer the "etched" sound they can make. Great thing about diy is you can experiment if you wanna and get it to your taste.