Proline X Performance Optimized Single 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 - 12" Edition: Where Power Meets Precision
Transform Every Beat Into Pure Thunder
Born from precision engineering for Ground Zero subwoofers, our Performance Optimized Series quickly proved its worth across multiple brands. Now your 12-inch subwoofer - whatever the make - can achieve the earth-shaking performance it was designed for.
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. The 12" Performance Optimized Series doesn't just house your subwoofer - it unleashes its full potential through meticulous engineering that extracts every ounce of power and precision from the sweet spot of subwoofer sizes.
đŻ Technical Specifications That Deliver Results
Dimensions:Â 28" W Ă 14.5" H Ă 12.75" D
Internal Volume:Â 1.75 cubic feet (precision-calculated airspace for 12" drivers)
Tuning Frequency:Â 34Hz (optimized for deep, chest-thumping bass)
Port Configuration:Â 19.5" square opening with exclusive V-Port technology
Driver Cutout:Â 11.25" precision-machined mounting hole
Material:Â Premium Apex MDF construction
Mounting:Â CNC precision-cut for rock-solid 12" driver integration
đ 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 12" driver airflow dynamics.
Military-Grade Internal Bracing
Strategic internal reinforcement prevents panel flex and unwanted resonance, ensuring every watt of power translates into pure, undistorted bass from your 12" powerhouse.
Precision CNC Manufacturing
Computer-controlled cutting guarantees perfect 11.25" driver opening for perfect fit and optimal acoustic seal - no gaps, no air leaks, no compromised performance.
Professional-Grade Components
From the recessed terminal cup to the interlocking joint design, every component meets professional installation standards for demanding 12" applications.
đȘ Built to Dominate - Handcrafted in the USA
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 Grey Trunkliner Finish - Professional appearance that resists wear
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 Recessed Side Panels - Maximizes internal volume while maintaining structural integrity
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 Advanced CAD Optimization - Every angle calculated for peak 12" acoustic performance
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 Top-Grade Terminal Cup - Secure, corrosion-resistant connections
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 12" Optimized Airspace - 1.75 cubic feet engineered specifically for 12" driver dynamics
đ” The 12" Advantage You'll Actually Notice
For Entry-Level 12" Subwoofers:Â Transform budget drivers into performance machines that rival premium systems
For Mid-Level 12" Subwoofers:Â Unlock the potential you paid for but never experienced - deeper, cleaner, louder
For High-End 12" Subwoofers:Â Achieve the reference-quality sound they were designed to deliver with maximum efficiency
Why 12" is the Sweet Spot:
- Perfect balance of deep bass extension and tight response
- Optimal cone area for maximum air displacement
- Ideal power handling for most vehicle electrical systems
- Compact enough for versatile installation options
đ Universal 12" Compatibility Meets Custom Performance
While originally engineered for Ground Zero's demanding 12" specifications, extensive testing revealed these acoustic principles benefit virtually any quality 12-inch subwoofer. Our extensive compatibility database ensures your specific 12" driver will perform at its absolute peak.
Perfect Match For:
- 12" competition subwoofers demanding maximum SPL
- 12" SQ drivers requiring precise acoustic loading
- 12" daily drivers needing reliable, long-term performance
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đŻ Perfect For:
- Sound Quality Enthusiasts seeking accuracy and clarity from their 12" investment
- SPL Competitors demanding maximum output from proven 12" technology
- Daily Drivers wanting reliable, long-term performance with that perfect 12" punch
- System Builders requiring precise specifications for 12" driver optimization
The Bottom Line: Your 12" Subwoofer Deserves Better
Stop settling for generic boxes that waste your 12-inch subwoofer's potential. The 12" Performance Optimized Series represents the difference between hearing bass and feeling bass - between adequate sound and the spine-tingling experience that makes every drive memorable.
With 1.75 cubic feet of perfectly tuned airspace and our exclusive 19.5" square port design, your 12" driver will deliver the deep, powerful, and precise bass response that made you choose 12-inch technology in the first place.
Proline X Performance Optimized Single 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.