I gave up on the new 168 and went to the 206e.A much better performing driver(less money also) and with the horn shown. I am getting a very strong FAST tight bass down to 45 Hz, no sub necessary.
Horn rolls off at 300 hz and the baffle pickes it up at 300hz.No stuffing.
ron http://fullrangedriver.com/tiki-browse_image.php?imageId=27