Custom made to fit Rockford Fosgate P3

Take your Rockford Fosgate subwoofers up a notch with the Proline X enclosures built to maximize your P3 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.

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 Rockford Fosgate?

The P3 subwoofers now feature anodized aluminum cones and dustcaps along with unique spider venting to keep the motor cooler than previous versions. These feature VAST technology to increase surface cone area up to 25% and a FlexFit basket for extreme car and truck installations. Best of all, a new hybrid stamp-cast basket offers the best of both worlds by providing super strength while minimizing weight and resonance.