Subwoofer enclosures, CNC cut in Tennessee
Proline X designs and builds sealed, ported and down-firing enclosures for car audio. This site is the engineering reference: every model's datasheet, series by series. Enclosures are sold factory-direct by Audio Intensity.
Series
Micro Series
Compact sealed enclosures for shallow-mount and small-footprint installs.
Performance Series
Universal sealed and ported enclosures in single and dual 8", 10", 12" and 15".
Performance Optimized
Driver-specific enclosures solved from the manufacturer's Thiele-Small parameters.
Professional Series
Multi-layer baffle enclosures for high-output subwoofers.
Down-Firing Series
Down-fire sealed and ported enclosures for cargo bays and behind-seat spaces.
Vehicle Specific
Direct-fit enclosures for specific trucks, SUVs and Jeeps.
Vehicle specific
From the Learning Center
- Passive vs Active SubwoofersComplete comparison of passive vs active subwoofers covering amplification, installation requirements, performance differences, and cost considerations.
- Subwoofer Impedance GuideComplete subwoofer impedance guide explaining 2 ohm, 4 ohm, 8 ohm configurations, amplifier matching, and power delivery for optimal bass performance.
- Subwoofer Magnet TypesComplete guide to subwoofer magnet types including ferrite, neodymium, and ceramic magnets, and their impact on performance, efficiency, and sound quality.