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There's nothing really missing unless you want to delve into the world of processing/equalization :)

Temporarily hooked up the XR tweets, and I have to say wow...enormous staging improvement. The funny thing is the smoothness of them was a little uncanny considering that they were about an inch away from windshield and a metal dashboard, perhaps a product of the midrange drivers being so high. Rule #1 in car audio: Throw conventional logic out of the window. Seriously, though, I'm thinking about going with either some Focal TN-52s or Quart QTD's in this install. The TN-52s combined with the Excels would be a brutally revealing combination, to say the least. Should be able to get them sounding really smooth and detailed, though, I've learned that poor off-axis performance may actually be desirable with tweeters in A-pillars since you can reduce side bias as well as reduce early reflections :)

I highly recommend the TN-52's, that is what came with my K3P's. Excellent sound difference as compared to the TN-47's that came with the K2Power KF's

Yeah, the TN-52 is the better tweet from the Focal compact tweets, excluding the Beryllium tweet (though whether it's "compact" will depend on your judgement).

The TLR was a good tweeter for imaging due to those waveguides, but it was harsher and difficult to get sounding natural (compared to the TN-52).

You know golemon was telling me the same thing about the focals off axis. He loves the way they sound of axis when installed in the A pillars.

Man I need to get off my but and finish tha accord.

I feel you're better off with a narrow dispersion tweeter in pillars, while a wide dispersion driver would be more optimal somewhere like kick panels. I feel that's the main reason that cars using Focal and Quart tweets are so successful in competition. I've seen some competitors plug up the phase plugs in Quart tweets, which effectively kills the off axis dispersion. Food for thought.