20 watts is plenty for tweeters:fyi:Headunits have power? Are you serious? I don't think I've ever installed a car stereo and used the HU power before. I'm going to be pushing 1500wrms to my subs with the zx1500.1 and 800wrms with the two Sundowns. I can't even power the laptop I'm writing this on with 20wrms of power which my HU provides.