Maximum Performance Subwoofer Specific.

These boxes feature double faces, extensive bracing, upgraded carpet, and the option of “Level 2” upgraded inserts and branding. These enclosures are designed for mid to high-end subwoofers. All boxes are computer-modeled to maximize performance and power handling when accompanied by the supplied subsonic filter suggestions.


  • Hand Built in the USA
  • 3/4" Apex MDF Composite
  • Double Face panel with recessed woofer opening
  • Extensive Internal Bracing
  • All External rounded edges
  • CAD Optimized for Maximum Performance
  • Interlocking Design
  • Precision CNC Cut
  • Larger High-Quality Terminal Cup up to 10 gauge
  • Available wrapped in Black or Gray premium carpet
  • Very Low Tuning 28-34 HZ
  • New Models are added weekly
  • Store/Personal Branding Available
  • Available in 2 levels

      ProLine X - Professional Series - Alpine


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