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I get asked about these from time to time so I thought I'd post the pics I have. These are Audiobahn 1" silk tweeters, custom molded into the A-Pillar covers. The work was done by a member of the site out in Texas (Rocky). He molds the tweeter mounts into the stock covers and re-skins them to retain the factory finish/feel. Very good work indeed.
The tweeters themselves are angled across the windshield, to keep them from being too "bright". The elevated placement brings the soundstage right up to ear level, which beats the heck outta my OEM setup of just 2 in the door.
Yeah, he is able to get the vinyl in sheets and overlays it onto the pillar cover. The texture is just like the OEM material. The only drawback is that it IS an extra layer, which makes the cover a little thicker.......especially at the corners. The color is also tough to match since our interior is charcoal, but he did pretty well.
I don't have fabrication pics, since I wasn't involved in that part.
I have his contact number if you are interested.....PM me.
mounting them on the a-pillars keep them from being too bright? really? i always thought, from experience of course, a-pilliars would make them even brighter than if they were on axis.
from my experiences, fabric tweets on the a pilliar facing each other caused a peak from 2kzh-14khz with a big ass dip 16khz-20khz. it usually didnt register on the RTA. most of the problem with a-pillar tweets is the reflection from the window. it throws off staging and imaging and usually makes the tweeter shreek on some high notes.
the only tweet i feel does well in the a-pilliar is the focal tn-52, tn-45 and with the phase plug line in vertical position.
Actually tweeters in the a pillar or as high and far forward as possible is a great location, not facing the windshield, of course.
Also, in the S2000 since the dash is practically right in your face, using time correction to delay the tweeters some may help to widen the soundstage (when mounted on the dash or a-pillars). Tricks the ear by making the tweeters seem farther away from you then they are. Not exactly the same as correcting pathlength discrepencies using time correction, but its a mix of both.