The JRX218SD is driven by a massive JBL 18″ woofer with a cast frame and 3″ voice-coil. The JRX200 series delivers the performance and prestige JBL is known for at an affordable price point. To meet these conflicting design goals, we looked at every element of the speaker system design. We kept everything that makes a speaker perform and sound its best and we eliminated things that don’t. With performance, value and popular price points, we are going to be building a lot of JRX200 speakers. This means we can apply efficient, high-volume production methods and purchase materials at the lowest cost. That’s how JRX200 delivers unprecedented value.