Custom made to fit JL Audio: W3 or TW3

Take your JL Audio subwoofers up a notch with the Proline X enclosures built to maximize your subwoofer performance. These enclosures are built to spec, making sure each enclosure has the right airspace for your subwoofer. All of these enclosures are ported, carpeted with plush premium carpet.

These enclosures are made to order, with your specific subwoofer in mind. JL Audio specs are similar within the W3 and TW3 lines, however their mounting diameters vary. Please specify which subwoofer you'd like these to be built for. 

Proline X Professional enclosures have the option to upgrade to "level two" which includes laser engraved acrylics with the subwoofer manufacturer's names. 

Why Proline X?

Proline X relies on over 30 years of industry experience and leadership to create high-quality subwoofer enclosures. Based in Northern California as a subsidiary of Audio Intensity, Proline X products are American-Made and a veteran employer.

Enclosures are CAD optimized, precision CNC cut, and assembled by hand with stringent quality control throughout assembly to completion. You won't find better boxes for the price anywhere.

Why JL Audio?