Yeah, 6.5"Those are some radical looking tweeters, but I bet they sound great the way they're positioned. I'm in the market for some components with the socket tweeter pods so I can put then in the stock location and still aim them. If anyone has suggestions I'm all ears. Btw, our stock door speaker are 6.5" correct?
Many people (self included) butcher the stock speakers and glue the replacements into the stock plastic ring.
If you don't want to modify the door panels at all, many 3/4" tweeters can be made to fit behind the stock tweeter grille. Fitting a 1" tweeter will likely require enlarging the holes in the door panel. Many (like the old Diamond Audio tweets thare are in my door pics above) will swivel/tilt in their mounts.
BTW, I figured out the "sweet spot" for my current tweeter aiming is about 10" to the right of my head. :0
Not much I can do about that with this HU, though.