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Description
MTX C1500C-07L ThunderForm 10” 200W RMS 4Ω Custom Loaded Subwoofer Enclosure for 2007-2018 Chevrolet Silverado / GMC Sierra Crew Cab (Black)MTX Audio C1500C 07L ThunderForm Loaded 10" Subwoofer Enclosure 2007 2018 Chevy GMC Crew Cab FITMENT NOTE: Fits 2007 2018 Chevrolet Silverado & GMC Sierra 1500 2500 3500 Crew Cab. Also fits 2019 Silverado "LD" and 2019 Sierra "Limited" (Legacy Body Styles). Does NOT fit 2007 "Classic" old body style or 2019 Up New Generation trucks. The MTX C1500C 07L ThunderForm is a custom engineered bass solution designed to provide hard hitting low end while
MTX Audio C1500C-07L ThunderForm Loaded 10" Subwoofer Enclosure – 2007-2018 Chevy/GMC Crew CabFITMENT NOTE: Fits 2007-2018 Chevrolet Silverado & GMC Sierra 1500/2500/3500 Crew Cab. Also fits 2019 Silverado "LD" and 2019 Sierra "Limited" (Legacy Body Styles). Does NOT fit 2007 "Classic" old body style or 2019-Up New Generation trucks.
The MTX C1500C-07L ThunderForm is a custom-engineered bass solution designed to provide hard-hitting low-end while maintaining a completely stock appearance. Tailored for 2007–2018 Chevrolet Silverado and GMC Sierra Crew Cab models, this enclosure fits perfectly under the driver’s side rear seat. This "Loaded" version comes pre-installed with a high-performance 10-inch Terminator series subwoofer, optimized for the enclosure's specific air volume. Constructed from high-density MDF and wrapped in aviation-grade black carpet, the C1500C-07L is built to handle 250 Watts RMS. It is the ideal choice for truck owners who prefer to use an external amplifier to power their system.
Key Features
- Vehicle Specific Fit: Custom-engineered for 2007-2018 (and 2019 LD/Limited) Chevy/GMC Crew Cab models
- Stealth Integration: Installs out of sight under the driver’s side rear seat with no loss of legroom or seat functionality
- Terminator Subwoofer Included: Pre-loaded with a 10-inch Terminator series 4-Ohm subwoofer
- Power Handling: Optimized to handle 250 Watts RMS (500 Watts Peak)
- Rugged MDF Construction: Built using high-density 5/8" MDF to ensure a rigid, vibration-free performance
- Aviation-Grade Finish: Wrapped in durable black carpeting designed to match the factory interior
- Sealed Design: Features a 0.7 cubic foot sealed internal volume for punchy, accurate bass response
- Easy Installation: Includes all necessary mounting hardware for a secure, professional-grade install
- Impedance: Single 4-Ohm terminal for easy connection to any mono or bridged amplifier
- Frequency Response: 39Hz – 150Hz
- Dimensions: 16.31" H x 20.75" W x 8" D
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 3
thinner
It's thinner than it's described.
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Reviewed in the United States on January 29, 2025
★★★★★ 5
Buy the comforter!
Absolutely love this comforter. It’s super fluffy! Definitely buy it! You won’t regret it.
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Reviewed in the United States on January 1, 2026
★★★★★ 5
Really warm
This is well made and very warm. I’ve had down comforters for years and needed a new one. Great price point for a California King. Came quickly.
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Reviewed in the United States on February 12, 2025
★★★★★ 5
Saved me so much money
Im loving this mattress topper. It has added a noticeable layer of comfort to my firm mattress without making it feel too soft. The cushion is plush yet supportive and has made sleeping more comfortable overall.
The bamboo feels soft and breathable. It fits on the mattress with the deep pockets and stays in place alk night. Setup was easy and it fluffed up after unpacking.
If you have a firm mattress and want extra comfort without replacing it, this topper is a great option. Highly recommend
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Reviewed in the United States on December 29, 2025
★★★★★ 5
Comfortable, cooling, and OEKO-TEX certified, it’s a great way to refresh any mattress.
This 3-inch mattress topper instantly upgraded my bed with a softer, cooler, and more supportive feel. The bamboo-viscose fabric is noticeably breathable, helping regulate heat throughout the night—great for hot sleepers. The 1200GSM down-alternative fill adds plush, cloud-like cushioning while still offering balanced support for the back and shoulders. It fits securely with the deep pockets and stays in place even when turning. After allowing it to fully expand, the topper fluffs up beautifully. Comfortable, cooling, and OEKO-TEX certified, it’s a great way to refresh any mattress.
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Reviewed in the United States on December 8, 2025
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