All Eminence horns (except the T12000) mount either the Eminence PSD2002 or JBL 2426 compression drivers. Almost all of my designs use the H290, but a few use the LT250. Naturally, dispersion is much narrower on the LT250.I tend to prefer wider dispersion for home hifi use. Horns with 90o horizontal dispersion are perfect for cornerhorns, and usually sound great on freestanding designs as well.