yeah thats exactly it mark,or,if you find a cheap alpine amp,with only 2 channels,buy that,run your tweeters off it,and if you stay alpine with your amplifiers,you can Piggy back your amplifiers to one another,
POWER x POWER
EARTH x EARTH
just do that with your wiring,and your amp should be set up,also,doing that will save you a pre out on your head unit.and you'll have a good sound comming from your tweeters,and speakers,
though,if you do that,the only thing i fear will happen is that your tweeters will out sound your remaining 6" speakers,so just tune it down,and never the less.
good luck
