Running Left/Right Tweeters at Different levels

CTGT2005
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I have my tweeters mounted in the door panel in the factory location. The drivers tweeter is much futher off axis than the passenger tweeter. How common is it to run the drivers side tweeter slightly higher than the passenger tweeter to compensate for the off axis high frequency roll off?

 
Do you have a way to adjust individual levels on the tweeters? If not, you'll want to mount the tweeters so that you can change the aiming. Some installers intentionally mount the tweeters facing each other. Do you have a problem with how they sound?

 
I put them in the factory recessed area inside the door panel. I wanted a stock looking install, no new holes in any of the door panels. You can see in this picture where the tweeter goes up in front of the door handle.

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Do you have a way to adjust individual levels on the tweeters? If not, you'll want to mount the tweeters so that you can change the aiming. Some installers intentionally mount the tweeters facing each other. Do you have a problem with how they sound?
The speakers are Alpine type R SPR-17S. The tweeters are adjustable from 0 to -8. I cant seem to get the treble to sound smooth. When I turn down the tweeters to compensate I cant seem to get them to image right. It could be caused by diffraction off the door panel.

On a side note, the tweeters have a bar going across the center of them. Any idea what its purpose is for? Should the tweeters be mounted with the bars running vertically or horizontally?

x500SPR17S-o_tweeters.jpeg


 
The speakers are Alpine type R SPR-17S. The tweeters are adjustable from 0 to -8. I cant seem to get the treble to sound smooth. When I turn down the tweeters to compensate I cant seem to get them to image right. It could be caused by diffraction off the door panel.
If your level adjustments aren't doing the trick then it's not simple level setting that's needed. 8 dB of adjustment is plenty.

On a side note, the tweeters have a bar going across the center of them. Any idea what its purpose is for? Should the tweeters be mounted with the bars running vertically or horizontally?
That's probably a wave guide, which would help with off axis dispersion. Your installation manual might mention which way to orient the tweeters, or else try turning them and test it. You should move the tweeters around anyway since there can be significant benefits to custom speaker locations and aiming.

 
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