The Proline X Performance line enclosures are designed with performance and value in mind. Available in both sealed and ported models, they fit a broad variety of products, from entry to mid level subwoofers. All Proline X subwoofer enclosures are hand built in the USA, precision CNC cut, with high quality terminal cups.

Enclosures in the Proline X Performance line are constructed using proprietary high-density Apex wood composite with superior strength and durability. They feature an interlocking design, internally braced, rounded external edges, and high output ports with carpet groove.

Performance line enclosures feature a salt and pepper trunk liner with a Proline X laser cut acrylic badge on the front face of the box.