1200W 10" Slim Under Seat Powered Car Subwoofer, High/Low Level Input, Car/Truck Audio Sub Built-in Amplifier amp Combo Package, with Blue LED Light
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Extended holiday returns
Returnable until Jan 31, 2026 Learn more
Returnable until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: Returnable until Jan 31, 2026
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
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Availability:
20 left in stock
Arrives
Sunday, Dec 21
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Features
- 2025 New Upgrade- The upgraded subwoofer has a peak power increase from 800W to an amazing 1200W, making it stand out from the crowd. This upgrade brings clearer and more powerful bass, taking your car audio system to a new level. Let you enjoy a more dynamic bass experience and immersive sound quality on the road. Every trip is full of passion and vitality!
- Space-saving DesignExperience powerful sound without sacrificing space! 10-inch ultra-thin active subwoofer, designed to save space, the ultra-thin thickness of 3.54inch/90mm can fit perfectly under your seat and is compatible with most truck/car seat bottoms. Enjoy a dynamic and powerful bass experience while keeping the interior of your vehicle tidy.
- Outstanding Heat Dissipation- FOLTUSYMY 10-inch Ultra Slim Under Seat Active Powered Car/Truck Subwoofer comes with a built-in amplifier. The subwoofer car shell is made of cast aluminum, which improves the heat dissipation effect three times compared to traditional iron shells, ensuring that the subwoofer stays cool even when placed under the seat of your car or truck.
- Adjust the volume anytimeThe subwoofer car included remote control(With gain, bass boost and crossover controls) allows you to change the amount of bass without changing the radio volume, for the perfect mixture of bass in your music at any volume.
- Get rid of the dull designThe new 2025 upgraded version of the car subwoofer audio adopts an aluminum alloy spider-shaped speaker protector and a speaker LED atmosphere light ring design. When the car starts, the subwoofer will light up with a blue LED light. Make your car look cooler at night.
- High to Low Level ConverterThis car amplifier Supports High + Low Level Inputs, Compatible with a variety of car stereo audio systems and car head unit equipment.Features automatic turn-on technology, adjustable input sensitivity, soft-delay remote turn-on, thermal protection circuit, short-circuit protection circuit, overload protection circuit, green power/red protection LED.
- Premium Customer SupportWe are committed to providing excellent customer satisfaction and offer a convenient 6-month replacement warranty for this subwoofer. Our 7*24 online customer service team is dedicated to providing you with any inquiries or support to ensure that you enjoy a smooth and enjoyable audio upgrade experience.
- Product parametersLow Pass Filter: 50Hz, Bass Boost: 0 - 12dB @ 45Hz, Built-in Sub-Acoustic Filter Load @ 20Hz, Total Harmonic Distortion (THD): < 0.4%, Rated Fuse: 15A, Peak Power: 1200 Watts, RMS Power Handling: 220 Watts, Impedance: 4 Ohms.Frequency Response: 20Hz - 500Hz, Signal to Noise Ratio: >90dB , Low Level: 300mV, Input Sensitivity, High Level: 0.9V, Dimensions (inches): 13.5"(L) x 10.2"(W).Thickness: 3.54"
Brand: FOLTUSYMY
Speaker Maximum Output Power: 1200 Watts
Connectivity Technology: Auxiliary, RCA, USB
Audio Output Mode: Stereo
Mounting Type: Under Seat
Material: Aluminum
Model Name: RMS-004
Speaker Type: Subwoofer
Special Feature: LED Light
Included Components: Volume controller, RCA input/output cables, High to Low Level Converter
Product Dimensions: 13.58"D x 10.23"W x 2.67"H
Item Weight: 5.11 Kilograms
Warranty Type: Limited
Number of Items: 1
Control Method: Remote
Style: Classic
Manufacturer: FOLTUSYMY
Item Weight: 11.25 pounds
Item model number: RMS-004
Date First Available: March 14, 2025
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Dec 21
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
This subwoofer is a marvel. The bass is deep, clean, and very natural, not the typical distorted rumble. It blends perfectly with the music. Its compact design (ideal for under the seat) and the fact that it already includes the level converter (TD-22) and all wiring make installation incredibly easy. Excellent sound quality and an unbeatable price-performance ratio.
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Reviewed in the United States on October 18, 2025 by Isleydi Isleydi
Very surprised. I didnt think you'd get much for $100, but yeah, its a nice sturdy bix with a subwoofer and a built in amp. Kit comes with all the wires and even a speaker to RCA adapter. I was worried a bit the power wires seemed kinda skinny but I had it bumpin for 30 min straight and they did not get too hot. The bass is very smooth. Amp has full controls you would expect from an external amp. It wont shake your windows out lol, but its way more than I anticipated honestly. Very good deal for the money. Probably going to buy another one for the second car.
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Reviewed in the United States on October 22, 2025 by Yuriy Yuriy
I was surprised by how good it sounds for its size. The bass is strong and it fits perfectly under the seat. Super easy to install, and the blue lights look awesome. No battery issues so far. Totally worth it!
Reviewed in the United States on October 10, 2025 by eduardo senguer
sounds good but no low bass well not very good like it said deep bass ha none of that but great drum bass n elecrica dance boom mid bass
Reviewed in the United States on July 25, 2025 by def not fred
I recently installed the FOLTUSYMY 1200W 10" Slim Under Seat Powered Car Subwoofer in my vehicle, and I'm thoroughly impressed with its performance. Despite its compact size, this subwoofer delivers deep and powerful bass that significantly enhances the overall audio experience. Installation: The installation process was straightforward. The included wiring kit and clear instructions made it easy to set up, even for someone like me who's not a professional installer. The slim design allowed it to fit perfectly under the passenger seat without taking up valuable space. Performance: The built-in amplifier provides ample power, and the high/low-level inputs offer flexibility in connecting to various audio systems. The bass is rich and punchy, adding depth to music genres ranging from rock to hip-hop. The blue LED light adds a stylish touch to the interior, especially during nighttime drives. Build Quality: The subwoofer feels sturdy and well-constructed. The materials used are of high quality, and I haven't experienced any issues with overheating or distortion, even after extended use. Value: Considering its performance and features, this subwoofer offers excellent value for the price. It's a cost-effective solution for anyone looking to upgrade their car's audio system without sacrificing space or breaking the bank. Conclusion: If you're in the market for a compact yet powerful subwoofer, the FOLTUSYMY 1200W 10" Slim Under Seat Powered Car Subwoofer is a fantastic choice. It combines ease of installation, impressive sound quality, and a sleek design, making it a worthwhile investment for any car audio enthusiast.
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Reviewed in the United States on May 21, 2025 by Dylan Dylan
Decent sound, maybe a little too punch to keep the quality up but the main issue with this one is a constant tapping / clicking. Essentially it gets into a state where it's like someone is tapping on a microphone at a constant rhythm (music on or off). When music is loud you don't notice it but as soon as it's in between songs or gets into quite parts it's just always there clicking...I want to love this but I think this one will be going back. Going to wait a week or so to see if I can figure it out or not. This was happening all the time, not it is just off and one but seems to stay when it happens.
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Reviewed in the United States on August 2, 2025 by AJP AJP
I've been using this slim under-seat subwoofer for about two weeks, and I really like it. The quality is good, and it's so much better than the original speakers in my car. The design is fancy, modern, and beautiful. It was also easy to install by following the instructions, and it came with everything I needed. I have a great time using it, and it definitely improves my mood while driving. Overall, I am very satisfied with this product!
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Reviewed in the United States on October 25, 2025 by Chris Geng Chris Geng
Im actually quite impressed with this one! I bought a newer car, but the stereo sucked! I put in new 4.5" door speakers, and got this to fill out the bass. I used a LOC to a DSP. Amp running the door speakers, and ran this under my passenger seat. It was a bit tall for my car, so I raised my car seat up by about an inch to give enough room. Im no longer a young kid, so I don't need everyone in my small town hearing the music as I roll through. This sub/amp does pack a nice little punch! I listen to mainly rock, so it does very well... sounds great with KoRn and Limp Bizkit! 🤣 However, it does struggle with some of the deep bass in rap. But, for $100, I can't complain one bit!!
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Reviewed in the United States on November 4, 2025 by Zizzach