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Proline X subwoofer enclosures logo with American flag design on a textured background

Wedge Subwoofer Boxes and Enclosures

Tuning Frequency 36Hz (Angled)
Material High-Density MDF
Power Rating High Output
Ideal For Truck / Hatchback

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Built Different. Built Better.

Every Proline X enclosure is manufactured in our Tullahoma, Tennessee facility using materials and construction methods that most enclosure brands don't touch.

Langboard Elite MDF

Langboard Elite MDF

48.5 lb/ft³ density and 200 psi internal bond strength, the highest-grade MDF available for enclosure construction.

1 to 2 Year Warranty

1 to 2 Year Warranty

Term runs by series from date of purchase: 1 year on Performance, Performance Optimized, Economy and Down Fire; 2 years on Professional, Vehicle Specific, Flex, Micro and X Series. Covers structural failure and manufacturing defects.

Driver-Matched Tuning

Driver-Matched Tuning

Internal volume, port tuning, and cabinet dimensions are spec'd to each driver diameter, not a universal fit applied across sizes.

Made in Tullahoma, TN

Made in Tullahoma, TN

CNC-manufactured in our Tennessee facility on ShopSabre routers. Not imported. Not outsourced.