I will be mounting Alpine Type R 6 1/2" componets into a Chevy Astro Van. The tweeter will be placed 11 inches above the woofer. Amped by a Hifonics Son of Olympus w/75 watts per speaker.
With the 11" seperation between the woofer and the tweeter, which setting on the external crossover should be used for the best tweeter imaging & sound ? My setting choices on the crossover are +0db, -3db, or -6db.

Thanks