XL- The new standard of neodymium tweeters have broken onto the audio scene like a freight train! These large tweeters come with high precision 1 inch Titanium voice coils that are sure to leave your ears tingling. The housing is cast out of high strength aluminum with DS18 stamped on the front. The high quality mesh grill will look amazing while also protecting your investments! These tweeters have an RMS rating of 120w at 4 ohms and are your solution to crispy clean highs in your audio system!