With a shallow depth, DAS18's PRO-H44/BK 1" compact exponential horn makes it easy to add a high efficiency high frequency compression driver to any system. The 45° x 45° dispersion pattern is perfect for placing the majority of the output right where you want it. At only 4.5" square by 3" deep this horn requires very little space and is compatible with any of your favorite 1-3/8" - 18 TPI mount compression drivers.