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Description
MTX C1500C-07A ThunderForm Amplified 10” 250W RMS 4Ω Custom Loaded Subwoofer Enclosure for 2007-2018 Chevrolet Silverado / GMC Sierra Crew Cab (Black)MTX Audio C1500C 07A ThunderForm Amplified 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 07A ThunderForm is the ultimate stealth bass solution for Chevrolet Silverado and GMC Sierra Crew Cab
MTX Audio C1500C-07A ThunderForm Amplified 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-07A ThunderForm is the ultimate stealth bass solution for Chevrolet Silverado and GMC Sierra Crew Cab owners. Engineered specifically to utilize the unused space under the driver’s side rear seat, this custom-fit enclosure provides a powerful low-frequency upgrade without sacrificing any passenger legroom or cargo space. This "Amplified" model features a built-in high-efficiency Class D amplifier perfectly matched to a 10-inch Terminator series subwoofer, delivering 250 Watts of RMS power. Constructed from durable, high-density MDF and finished in aviation-grade black carpet to match your truck's interior, the C1500C-07A offers a factory-integrated look with the hard-hitting "Thunder" that only MTX can provide.
Key Features
- Vehicle Specific Fit: Custom-engineered for 2007-2018 (and 2019 LD/Limited) Chevy/GMC Crew Cab models
- Stealth Installation: Mounts out of sight under the driver’s side rear bench seat, maintaining a completely stock appearance
- Built-In Power: Integrated high-efficiency Class D amplifier delivering 250 Watts RMS (500 Watts Peak) for a simplified installation
- Terminator Bass: Pre-loaded with a specially designed 10-inch Terminator series subwoofer with a polypropylene cone
- Universal Connectivity: Includes both RCA (low-level) and speaker-level (high-level) inputs for any head unit
- Smart Engage Technology: Automatically turns the amplifier on when it senses a signal (no remote wire required in most installs)
- Precision Controls: Variable low-pass crossover (50Hz–150Hz) and includes an External Bass Control (EBC) remote
- Rugged Construction: High-density MDF enclosure wrapped in aviation-grade black carpet
- Acoustic Tuning: Sealed enclosure design with 0.7 cubic feet of air volume for tight, accurate bass
- 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
4.0 ★★★★★
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Product Reviews
★★★★★ 4
Comfy!
Special Size: 27.5" Full Length with Pockets, Size: Large, Color: Black
Super comfy, not as much tummy control as I would like but perfect for house work, going to the gym or grocery shopping. Love that these have pockets!! Thin so not too hot and stretchy too.
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Reviewed in the United States on April 1, 2026
★★★★★ 5
Great leggings!
Special Size: 27.5" Full Length with Pockets, Size: Medium, Color: Black
These are great leggings! They’re my third pair. They are comfortable, lightweight, and fit great. I wouldn’t say they are buttery soft as compared to other leggings that are listed the same texture, however they are soft and smooth. The pockets are a must and are positioned perfectly.
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Reviewed in the United States on January 9, 2026
★★★★★ 5
So excited I found these!
Special Size: 27.5" Full Length, Size: Small, Color: Black, Special Size: 27.5" Full Length, Size: Small, Color: Black
Extremely impressed with these leggings! These athletic leggings are absolutely amazing! The material is incredibly soft and feels so comfortable against the skin. The quality is top-notch, with a durable yet flexible fabric that moves perfectly with your body. They are completely squat-proof, which makes them perfect for workouts, and they stay in place without sliding down, no matter how much you move. Some of my more expensive name brand leggings don’t check all the boxes; as these do! These leggings truly combine comfort, quality, and performance—highly recommended!
Also- I am 5’3/5’4 and these hit right at my ankle
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Reviewed in the United States on July 22, 2025
★★★★★ 5
Really soft and comfortable for the price!
Special Size: 27.5" Full Length, Size: Small, Color: Ocean Blue, Special Size: 27.5" Full Length, Size: Small, Color: Ocean Blue
These are soooo soft and the quality is amazing! They feel like they would be way more expensive! I love the color and get lots of complements.
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Reviewed in the United States on January 22, 2026
★★★★★ 5
Fabulous!
Special Size: 19" Capri with Pockets, Size: X-Small, Color: Flamingo Pink
These are AMAZING! Just received my first two pairs ( black and flamingo pink) and I am back ordering more! They are so smooth and soft and feel great! They fit so well-not to restrictive but have strength enough in the Lycra to look amazing (not the thin, flimsy, cheap tights/leggings). I live in the Sunshine State so I can wear these to workout and run indoor or outdoor practically year round. I prefer this shorter length because they are cooler to wear in the 95° heat 100% humidity. So hoping they make these in the green color and the bright blue color that is available in the full length active leggings! These are my new favorite crop active leggings! Please, please, please make more colors! Amazon, these are fabulous quality and style and at this price point, I'd buy every color and pattern available (I just don't do flesh tones).
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Reviewed in the United States on July 8, 2025