Proline X Performance Optimized Dual 12 inch Ported Box
Professionally Maintained Demo Units
Every demo unit has been carefully maintained by our certified technicians. These aren't customer returns or damaged goods - they're the same high-quality equipment we've used to demonstrate premium sound to our customers for years.
Pre-Tested & Verified
Unlike typical clearance sales, every item has been tested and verified by our technical team. We stand behind the quality of our relocation inventory.
Everything Must Go Pricing
These aren't regular sale prices - this is genuine "moving warehouse" pricing. Discounts you simply won't find under normal retail circumstances.
Trade Show Display Models
Many items are pristine display models from major audio trade shows - equipment that's been seen but never installed. These pieces often include special editions or limited releases not available through regular retail channels.
Proline X Performance Optimized Series - Dual 12" Edition: The Ultimate Bass Authority
Transform Every Beat Into Pure Thunder - Maximum Impact
Born from precision engineering for Ground Zero subwoofers, our Performance Optimized Series quickly proved its worth across multiple brands. Now your dual 12-inch subwoofers - whatever the make - can achieve the earth-shaking performance they were designed for with the perfect synergy that only comes from matched acoustic loading in the most commanding configuration available.
Why Settle for Factory When You Can Have Championship-Level Performance?
Imagine feeling every kick drum in your chest, every bass line vibrating through your bones - now experience the ultimate expression of that power. The Dual 12" Performance Optimized Series doesn't just house your subwoofers - it creates the perfect acoustic environment where two 12-inch drivers work in perfect harmony, delivering the cone area of a massive 17" subwoofer while maintaining the proven performance characteristics that make 12" the gold standard of serious bass systems.
🎯 Technical Specifications That Deliver Results
Dimensions: 31" W × 15" H × 18" D
Internal Volume: 3.0 cubic feet (precision-calculated airspace for dual 12" drivers)
Tuning Frequency: 34Hz (optimized for deep, chest-thumping bass)
Port Configuration: 30.375" square opening with exclusive V-Port technology
Driver Cutouts: Dual 11.25" precision-machined mounting holes
Material: Premium Apex MDF construction
Mounting: CNC precision-cut for rock-solid dual 12" driver integration
🏆 Engineering Excellence That You Can Hear and Feel
Advanced V-Port Technology
Our proprietary port design eliminates turbulence and port noise, delivering clean, powerful bass that stays tight even at maximum volume - perfectly sized for dual 12" driver airflow dynamics and the massive air displacement of two premium drivers working in perfect unison.
Military-Grade Internal Bracing
Strategic internal reinforcement prevents panel flex and unwanted resonance, ensuring every watt of power from both drivers translates into pure, undistorted bass. The reinforced center divider provides additional structural integrity while optimizing airspace distribution for maximum dual 12" performance.
Precision CNC Manufacturing
Computer-controlled cutting guarantees perfect 11.25" driver fits and optimal acoustic seal for both mounting positions - no gaps, no air leaks, no compromised performance from either powerhouse driver.
Professional-Grade Components
From the recessed terminal cup to the interlocking joint design, every component meets professional installation standards for the most demanding dual 12" applications and extreme power levels.
💪 Built to Dominate - Handcrafted in the USA
✅ Grey Trunkliner Finish - Professional appearance that resists wear
✅ Recessed Side Panels - Maximizes internal volume while maintaining structural integrity
✅ Advanced CAD Optimization - Every angle calculated for peak dual 12" acoustic performance
✅ Top-Grade Terminal Cup - Secure, corrosion-resistant connections for high-power dual driver wiring
✅ Dual 12" Optimized Airspace - 3.0 cubic feet engineered specifically for maximum dual driver dynamics
✅ Reinforced Internal Divider - Optimizes airflow and eliminates driver interference under extreme conditions
🎵 The Dual 12" Advantage You'll Actually Notice
For Entry-Level Dual 12" Systems: Transform budget drivers into performance machines that rival the most expensive single driver systems
For Mid-Level Dual 12" Systems: Unlock the potential you paid for but never experienced - deeper, cleaner, dramatically louder
For High-End Dual 12" Systems: Achieve the reference-quality sound they were designed to deliver with maximum efficiency and authority
Why Dual 12" is the Ultimate Configuration:
- Combined cone area equivalent to a 17" driver with 12" speed and precision
- Maximum power handling capability for extreme SPL and competition applications
- Superior heat dissipation with two voice coils and motor structures
- Redundancy - if one driver fails, you still have substantial bass output
- Most even bass distribution throughout the vehicle interior
- The perfect balance of deep extension, output, and transient response
🚗 Universal Dual 12" Compatibility Meets Custom Performance
While originally engineered for Ground Zero's demanding dual 12" specifications, extensive testing revealed these acoustic principles benefit virtually any quality dual 12-inch subwoofer setup. Our extensive compatibility database ensures your specific dual 12" drivers will perform at their absolute peak together in perfect harmony.
Perfect Match For:
- Dual 12" competition subwoofers demanding maximum SPL performance
- Dual 12" SQ drivers requiring precise acoustic loading for audiophile applications
- Dual 12" daily drivers needing reliable, long-term performance with maximum impact
- Mixed impedance dual driver configurations and high-power applications
🎯 Perfect For:
- Sound Quality Enthusiasts seeking accuracy and authority from their dual 12" investment
- SPL Competitors demanding maximum output from the ultimate dual driver technology
- Daily Drivers wanting reliable, long-term performance with that perfect dual 12" authority
- System Builders requiring precise specifications for dual 12" driver optimization
- Power Users who need to handle serious amplifier wattage (2000+ watts)
- Competition Teams requiring proven performance for SPL and SQ events
The Bottom Line: Your Dual 12" Subwoofers Deserve Better
Stop settling for generic boxes that waste your dual 12-inch subwoofers' potential. The Dual 12" Performance Optimized Series represents the difference between hearing bass and commanding bass - between adequate sound and the spine-tingling, earth-shaking experience that makes every drive unforgettable and every demonstration legendary.
With 3.0 cubic feet of perfectly tuned airspace and our exclusive 30.375" square port design, your dual 12" drivers will deliver the deep, powerful, and precise bass response that represents the pinnacle of automotive audio performance.
Ready to unleash your dual 12" system's ultimate potential?
Proline X Performance Optimized Dual 12 inch Ported Box
Frequently Asked Questions
Are these items authentic, and why are the prices so low?
This sale includes demo units we've used for customer demonstrations since 2016, new-old-stock from discontinued product lines, display models from trade shows, and carefully curated inventory we've collected over nearly a decade. Most items include original packaging where available.
What types of items are included in the relocation sale?
Our relocation sale includes demo units we've used for customer demonstrations, new old stock from discontinued product lines, and display models from trade shows. All items are genuine products from top car audio brands - we're simply clearing inventory we can't take to our new location. Items range from amplifiers and speakers to processors and accessories accumulated over nearly 10 years at this location.
Do sale items come with manufacturer warranties?
Warranty coverage varies by item and condition. New old stock items typically include full manufacturer warranty if still valid. Demo and display items may have limited or no manufacturer warranty remaining. We clearly state warranty status in each product description. All sales are final on relocation sale items.
How does shipping work for relocation sale items?
We ship relocation sale items using the same careful packaging methods as our regular inventory. Shipping costs are calculated at checkout based on size and weight. For multiple item purchases, we'll combine shipping where possible to save you money. Large items like subwoofer boxes may require freight shipping with additional costs.
Can I return or exchange relocation sale items?
All relocation sale items are sold as-is with no returns or exchanges. We encourage local pickup customers to inspect items before purchasing. For shipped items, we provide detailed descriptions and photos. Since we're relocating, we cannot accommodate returns or warranty service after the sale period ends.