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Description
MTX Audio FMUST05BK12A-TN ThunderForm Amplified 12” 200W RMS 4Ω Custom Loaded Subwoofer Enclosure (Black) for 2005-2013 Ford Mustang CoupeMTX Audio FMUST05BK12A TN ThunderForm Amplified 12" Subwoofer Enclosure 2005 2014 Ford Mustang FITMENT NOTE: Fits 2005 2014 Ford Mustang Coupe and Convertible (S197 Platform). Does NOT fit 2015 Up (S550) models. The MTX FMUST05BK12A TN ThunderForm is a custom engineered, all in one bass solution designed to bring deep, hard hitting low end to the 20052014 Ford Mustang without sacrificing your trunk's utility. This vehicle specific enclosure is
MTX Audio FMUST05BK12A-TN ThunderForm Amplified 12" Subwoofer Enclosure – 2005-2014 Ford MustangFITMENT NOTE: Fits 2005-2014 Ford Mustang Coupe and Convertible (S197 Platform). Does NOT fit 2015-Up (S550) models.
The MTX FMUST05BK12A-TN ThunderForm is a custom-engineered, all-in-one bass solution designed to bring deep, hard-hitting low-end to the 2005–2014 Ford Mustang without sacrificing your trunk's utility. This vehicle-specific enclosure is rotationally molded from high-density polyethylene (HDPE), creating a virtually indestructible and resonance-free housing that fits perfectly into the passenger-side rear corner of the trunk. While most factory "premium" audio systems use smaller drivers, this ThunderForm is loaded with a high-output 12-inch Terminator series subwoofer for massive air movement. This "Amplified" model features a built-in 200-Watt RMS Class D amplifier specifically tuned to the enclosure's volume, providing a seamless, factory-integrated look with the "Thunder" that MTX is legendary for.
Key Features
- Vehicle Specific Fit: Precision-molded to fit the passenger-side trunk corner of 2005-2014 Ford Mustang Coupe and Convertible models
- High-Output 12" Subwoofer: Pre-loaded with a 12-inch Terminator series driver, providing significantly more bass extension and impact than smaller factory subwoofers
- Integrated Amplification: Built-in high-efficiency Class D monoblock amplifier delivering 200 Watts RMS (400 Watts Peak) of clean, dedicated power
- Corner-Mount Stealth: Engineered to utilize the unused corner of the trunk, leaving the main cargo area open for gear and groceries
- Indestructible HDPE Construction: Rotationally molded high-density polyethylene is resonance-free and finished in Black to match your trunk's trim
- Smart Engage Technology: Automatically powers the system on when it detects a signal from the factory speaker wires (no remote turn-on wire required)
- Universal Connectivity: Includes both RCA (low-level) and speaker-level (high-level) inputs for easy integration with Shaker systems or aftermarket radios
- On-The-Fly Control: Includes an External Bass Control (EBC) remote knob, allowing you to adjust the subwoofer volume from the driver’s seat
- Acoustic Performance: Sealed 1.0 cubic foot enclosure provides tight, accurate, and musical bass response
- Frequency Response: 24Hz – 160Hz
- Dimensions: 15.5" H x 23.5" W x 10.5" 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
4.4 ★★★★★
Based on 1804 reviews
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Product Reviews
★★★★★ 5
Great ankle socks that stay put at a great price!!
Size: 6-9, Color: Assorted
These are great! I have been looking for a low profile ankle sock that is thinner but doesn’t ride down. (Picky, right?) I try to walk 5-7 miles on my days off. So it’s very important for me to not have to stop every couple of hundred yards, bend down, fix socks, then continue on my way while grumbling about NOT GREAT socks. These are not those socks. They really do stay put!!! And enough cushion to be comfortable also. So definitely a repeat!!
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Reviewed in the United States on December 2, 2018
★★★★★ 5
Great quality, no holes or fading!
Size: Medium, Color: Black/Assorted
I purchased these socks a couple years ago and love them so much that I just recently purchased them again! They fit perfectly, don't make my feet sweaty, and hit the ankle at the right spot. The material is so good that over years they have not faded and even though I wear the same few pairs every day, they have no signs of thinning or holes! These are the ONLY socks that I buy. I have the black ones as well as the multi-colored ones. I will never buy another brand or style again!
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Reviewed in the United States on January 11, 2020
★★★★★ 5
Cute under armor socks
Size: Medium, Color: Black/Assorted
There's no show under armour socks.Are perfect for anybody who likes thinner socks. I loved them, I love the design the colors and the comfort and fit. Hylie recommend to those of you who like thinner socks.
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Reviewed in the United States on October 22, 2024
★★★★★ 4
Well made and perform well, a little constricting
Size: Medium, Color: Black Assortment (6-pairs)
These socks definitely keep most of the moisture away from my feet, even in wet conditions, which is why I bought them. I am diabetic, though, and the recommendation is to wear socks that don't constrict at any point. These have a tight band around the opening that while it is not uncomfortable on, leaves a mark when I take them off. So far it's been ok, but if you have any kind of swelling in your feet or ankles these would probably not be the best. My foot measures size 8 and I wear size 9 Brooks running shoes. The socks fit me just right but based on the size of the opening and the overall length, I wouldn't think they would fit anyone more than a size larger. Overall well made and perform well as you would expect from this brand.
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Reviewed in the United States on July 20, 2018
★★★★★ 5
long lasting!
Size: Medium, Color: Black/Assorted
literally my favorite sock i will buy forever. they just started busting through after 6 years and i wear them a lot
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Reviewed in the United States on November 13, 2025