Vertical disperson on ribbon tweeters are alright. The LCYs are more forgiving since the actual ribbons are wider than say the Aurum Cantus G2si. Horizontal disperson? what's that? //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif
Horns and ribbon tweeters are very different physically and sonically. Ribbons are easier to put in the kick area than mounting horns under the dash (especially if you have those big cd2s where you'll want strong braces to keep them hanging). But out of the box, the horns will eat crap on the ribbons as far as imaging and sound staging. You thought imaging and staging small format dome tweeters was hard? Try doing so with ribbons and see exactly how much longer it'll take. As least in dome tweeters, the dispersion is uniform. In ribbons, the dispersion is limited to vertically and right on on-axis otherwise you can lose a lot of volume.
Secondly, they both sound different. Some people find horns to be very lively and upfront. Some *may* consider horns kind of harsh, but thats probably due to the fact that the horns are playing a wide range of freq and that usually makes it sound a bit harsher. Ribbons sound more airy or transparent. They have the shimmery sparkly highs that you probably won't find much with horns. Set up right, they can be less fatiguing than horns.
Lastly, ribbons can be tougher to integrate into a system, especially a 2-way system. Smaller ribbons are not able to get down as low as horns. Most horns will have no trouble playing at 1000hz. Lots of ribbons, depending how big they are, are limited to around 1.5 or so. The Aurum Cantus G2si are limited to around 2.5khz. Finding a mid to get up there is going to be pretty tough, especially if you have to use it for midbass also.
horns and ribbons are for different folks. From what I have seen, many people prefer one or the other. Not many will like them both equally (different taste in sound).
