This horn allows you to tune a high-frequency driver to your listening space without distortion thanks to its unconventional geometric shape and low expansion rate. It ensures accurate reproduction and an open sound stage, allowing you to reveal the full potential of your tweeters. The H45E is molded from high quality plastic and its screw thread is the industry standard 1-3/8" x 18 TPI. Its elliptical shape provides 80° horizontal and 50° vertical coverage and offers an acoustic load up to 3500Hz.