One known issue is that there is rust on the grille. Despite this, it offers a great audio experience with its cardioid - arrayable design.

Using this JBL subwoofer is easy. First, connect it to your audio system following the standard connection methods. You'll enjoy rich and powerful bass. When using it, make sure to place it on a stable surface. For maintenance, regularly check the grille for any rust growth. If you notice more rust, gently clean it with a soft brush. Avoid exposing the subwoofer to extreme humidity or direct sunlight to extend its lifespan.