Other than that, it is the same rugged, sturdy, IP67-rated build given that the Xtreme 3, and that's no lousy point; it's a design that has served JBL extremely nicely before.The driver configuration to the Xtreme 4 is the same since the preceding model, with two 70mm woofers and two 20mm tweeters behind the grille after which you can These pulsati