Cross-topic: film vs. dome tweeters

LittleCar_w/12s

I tend to keep to the car audio forum, so you don't see me here much. I am very into home audio as well, though and have a cross-topic question:

For my sound system for my computer alone, I have a custom 12" sub, front speakers by Altec, and a dipole film tweeter. I just recently dug up the old dipole and set it up. nnedless to say it realy enlightens my PC music, as well as being omnidirectional, allowing it to be a whole room system from a corner when needed.

My car was recently vandalised, and I am re-staging my entire system in it. I had a set of 3-way 6x9's, destroyed now. I pulled the pole piece off, which consists of a 2.5" sealed high-freq stiff-cone driver, and a metal-peizo dome tweeter.

As a test, I hooked up the unit to the amp powering my dipole... decent sound, but the dipole still overly outperforms above AND below the stiff-cone high. I also disconnected the high, and only drove the tweeter. NOTHING! the tweeter seems to be a peice of aesthetics when it comes to output. I cranked up the highs of the eq, as well as the amp... still nothing, whilst the dipole was screaming along!

Here's My question: While I am set on dipoles for home, they are relatively large for where I would put them in the car (the post where the seatbelts for the front are mounted). I want to use small coned set, high and tweet, but... Is there any real output from a peizo dome-tweeter? They are the predominant tweeter on the car-stereo market.

What would you reccomend, as I am an enthusiast for HQ, not SPL in my car, I only want to install the best, once. Is there a better dome-tweeter? Is there a film-tweeter capable of withstanding the SPL in a car?

Thanks for the help yall -Jerry