Professional Subwoofer Enclosures | Proline-X Custom Bass Solutions

Precision CNC-Engineered Enclosures That Deliver 3-5x Better Performance Than Any DIY Build

Precision Engineering

Acoustically Optimized Design - Every enclosure is engineered using advanced acoustic modeling software and real-world testing. Our designs maximize your subwoofer's potential while minimizing unwanted resonances and distortion.

Premium Construction

Built to Competition Standards - High-grade MDF construction with internal bracing, premium carpet finishes, and professional-grade hardware. Built to withstand the power and abuse of serious car audio systems.

Custom Fit Solutions

Vehicle-Specific Engineering - From universal designs to vehicle-specific custom fits, our enclosures are designed to maximize your available space while maintaining optimal acoustic performance.

Proven Performance

Competition-Tested Results - Trusted by car audio professionals and competition champions. Our enclosures deliver the performance and reliability demanded by serious enthusiasts and professional installers.

Choose the acoustic design that delivers your ideal sound signature. From tight, accurate sealed boxes to thunderous ported systems, each enclosure type is engineered for specific performance characteristics.

Choose the Right Subwoofer Type for Your Installation

Different vehicle setups and space constraints require different subwoofer designs. From plug-and-play powered solutions to ultra-compact shallow mount options, each type offers unique advantages for specific installations. Powered subwoofers include built-in amplification for convenient setup, while shallow mount designs fit behind seats or in tight spaces. Spare tire subwoofers maximize trunk space by replacing your spare tire, and enclosed subwoofers arrive ready to install with optimized acoustics. Select the type that best matches your vehicle's layout, installation preferences, and performance goals.

Complete Proline X Series Guide

Four specialized series engineered for every bass need and budget

Performance Series

Micro Series

Space Saver

$279 - $599

✓ Ultra-compact design
✓ Less than 1.0 ft³ volume
✓ Down-fire options available
✓ Perfect for tight spaces

📏 Shop Micro Series

Triple 10" Down-Fire: $279 | Loaded: $599+

Professional Series

Premium

$199 - $2,250+

✓ Competition-grade quality
✓ 6.5" - 18" size range
✓ Custom optimization
✓ Enhanced bracing system

🏆 Shop Professional

6.5" Ported: $199 | Dual 18" Solo X: $2,250

Vehicle Specific

Perfect Fit

$399 - $599

✓ Direct fit - no modifications
✓ Ford F-150/F-250 (2015-2023)
✓ Jeep Wrangler JK (2007-2017)
✓ Factory-like appearance

🚗 Shop Vehicle Specific

Ford F-150: $399 | Jeep JK: $599

🎵 Ready to Experience Proline X Excellence?

From budget-friendly Performance to competition-grade Professional - find your perfect bass solution

🛍️ Shop All Proline X Series 📖 Complete Buying Guide

Why Proline-X Outperforms DIY Solutions

Stop debating materials and shapes. Our precision-engineered enclosures solve the acoustic equation through advanced manufacturing and vehicle-specific optimization that DIY builders simply cannot achieve.

CNC Precision Manufacturing

0.001" tolerances impossible with hand tools. Our computer-controlled manufacturing creates complex internal geometries and precision port designs that eliminate standing waves and optimize acoustic performance.

DIY Reality: ±3dB frequency variation
Proline-X: ±1dB precision engineering

Vehicle-Specific Engineering

Optimized for your exact make and model. Unlike generic DIY boxes, our enclosures account for cabin acoustics, mounting locations, and vehicle-specific constraints to maximize bass response in your specific environment.

Generic DIY: One-size-fits-all compromise
Proline-X: Custom-engineered for your vehicle

Beyond MDF vs Plywood

Engineered composite materials and advanced damping. While DIY builders debate MDF density and plywood grades, we use proprietary material combinations designed specifically for optimal acoustic performance.

DIY Challenge: 15-25 hours + $500+ in tools
Proline-X: Professional installation included

Guaranteed Performance

95%+ customer satisfaction with warranty backing. Unlike DIY builds with unpredictable results, every Proline-X enclosure is tested and guaranteed to meet performance specifications with long-term reliability.

DIY Risk: Variable results, no warranty
Proline-X: Guaranteed performance + support

From Educational Research to Professional Results

You've done the research on materials, shapes, and designs. Now experience what professional acoustic engineering can achieve.

🇺🇸 Made in USA

Handcrafted Excellence

10+ Years

Design Life

Free Shipping

Expert Support

Explore Proline-X Solutions →

Hear From Car Audio Enthusiasts Who Trust Audio Intensity

Customer Reviews & Testimonials

Review Stats Header:

⭐⭐⭐⭐⭐ 4.8/5 Average Rating • 2,847+ Reviews • 98% Recommend Audio Intensity

Mike Rodriguez, Houston, TX

Perfect Factory Fit in My F-150

"I was skeptical about ordering a custom box online, but this thing fits my SuperCrew like Ford designed it themselves. The bass hits clean and deep without any rattling, and I didn't lose any storage space. Installation took 20 minutes. The build quality is incredible – thick MDF, perfect carpet finish, and the wiring connections are professional grade. Worth every penny."

Chris Patterson, Los Angeles, CA

Destroyed My Old System Performance

"Upgraded from a prefab box to the Audio Intensity ported enclosure and holy cow, what a difference. The bass extension is insane – hitting frequencies I never knew my subs could produce. My friends can't believe it's the same subwoofers. The tuning is perfect and the build quality shows in every detail. Customer service helped me pick the right size for my setup."

Sam Mitchell, Tampa, FL

Competition Performance for Daily Driving

"Wanted competition-level bass for my daily driver without the crazy space requirements. The sealed Professional Series box delivers tight, accurate bass that sounds amazing with every genre. The internal damping eliminates any unwanted resonance, and it handles 1500 watts without breaking a sweat. Build quality rivals boxes costing twice as much."

Brandon Lewis, Rochester, NY

Genius Flex Design Changed Everything

"The Flex Series is brilliant engineering. Switched from dual 10s sealed to single 12 ported in under 10 minutes just by swapping plates. Sound completely transformed – went from tight bass to deep, booming lows. The modular design means I can experiment with different setups without buying new boxes. Customer service explained everything perfectly."

Amanda Stevens, Denver, CO

First Build Success Story

"Never built a car audio system before but Audio Intensity made it foolproof. Their team helped me choose the right enclosure for my subs and space. The pre-cut terminal cup and internal wiring layout made installation simple. Three months later and I'm getting compliments everywhere I go. The bass is clean, powerful, and exactly what I wanted."

Tony Martinez, Elite Car Audio, Phoenix, AZ

Professional Installer's Choice

"I've been installing car audio for 12 years and these are the best enclosures I work with. The precision is incredible – every cut is perfect, joints are rock solid, and the internal bracing eliminates any flex. My customers always comment on how professional the installations look. Audio Intensity saves me time and delivers results that keep clients coming back."

Frequently Asked Questions

Get Answers to Your Subwoofer Enclosure Questions

How do I know which enclosure type is right for my setup?

Will your vehicle-specific enclosures fit my exact year and model?

Can I use any subwoofer brand with your enclosures?

What's the difference between your Performance and Professional Series?

How do I determine the correct internal volume for my subwoofer?

What does "tuned to 36Hz" mean for ported enclosures?

Do your enclosures come pre-wired?

How difficult is installation? Can I do it myself?

How long does it take to receive my enclosure?

What if my enclosure arrives damaged?

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