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2y3k » Best Under Seat Subwoofer For Sound Quality(Review & Guide) 2023

Best Under Seat Subwoofer For Sound Quality(Review & Guide) 2023

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Adding a sub plays a crucial role when it comes to enhancing your sound system. Most car owners seek to upgrade their stock audio with subwoofers, stereos, and other tools available in the market.

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Every car owner has the responsibility to learn a lot about the audio system in an attempt to do it the right away, for an optimum sound experience and the longevity of the equipment in which they invest.

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However, most customers do not know that there is a better and more convenient way to have a powerful subwoofer that also has a built-in amplifier that properly matches the device. The answer is simple, get yourself an under seat subwoofer.

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If you are looking for great price, and a plug and play tool to thump up your stereo system, this is the right place.

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Here is a comprehensive list of the top 10 best under seat subwoofers on the market today, from the best brands, and at the best prices that there is on the market.

Top 10 Best Under Seat Subwoofers For Cars

1. Rockford Fosgate P30012 Punch Under Seat Subwoofers

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Key Features

  • Fatigue resistant and low pass filter
  • Proprietary woofer optimized
  • Adjustable bass boost EQ
  • Detachable Power/Ground connector.

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Rockford Fosgate P30012 Punch under seat subwoofer is a stellar closed-loop woofer covered with industrial heat-activated vinyl to ensure optimum excecution between the woofer, and the enclosure. With its optimized motor magnetics, the extended pole and bumped vented backplate, and the thermal and over-voltage protection, this under seat subwoofer ranks high for its superb efficiency.

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The P300-12 powered subwoofer is an “all-in-one” device for those who want to add bass to an OEM system and have a spacing-saving, minimalist tool. It features a 12″ subwoofer in a sealed enclosure powered by a built-in 300-watt amp. For heavy users, the design brings a dual tear and fatigue resistant poly-cotton spider with woven tinsel leads and optimized motor magnetics, and a bumped vented backplate.

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Rockford Fosgate has been a symbol of superb audio systems for decades. Car owners find this under seat subwoofer very valuable because it leaves out the hassle of matching a complete stereo system. The “plug and play” woofer is easy to install, so you only need to run power, ground, and a clear signal from the source to get it going.

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Features a durable exterior that resists scrapes and bumps while in the trunk or cargo area. One of the best underseat subs, it’s priced at an affordable price range.

2. Kicker 11HS8 Hideaway Car Under Seat Subwoofer

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Key Features

  • Outstanding 150 Watts of power
  • Specially designed for small locations
  • Internal subwoofer and subsonic filter
  • Velcro fasteners and nylon straps

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At three inches high and barely 14 pounds, the Kicker 11HS8 distinguishes itself for being one of the easiest and lightest under seat subwoofer models, setting a high standard in bass sounds. Kicker Hideaway has a 150-watt amp and an 8-inch subwoofer that satisfies almost all drivers who want to add bass for a good listening experience yet not making the vehicle doors shake.

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The quick-connect power plugs add another step of comfort for those who just want to buy and connect this little monster and move forward with their routing. For such, the subwooofer brings velcro fastened nylon straps for safe installation and simple but fast removal.

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Some of these features include a remote bass control, an adjustable low pass crossover, two automatic turns on options, and a tweeter crossover. Also, it comes in a stamped steel basket and a vacuum polypropylene cone for remarkable quality and durability. Best of all, the Kicker 11HS8 Hideaway compact integrates with pretty much any factory or aftermarket head unit.

3. Alpine Electronics PWE-S8 Restyle Compact Powered Subwoofer

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Key Features

  • Multi-functional side panel with low pass filter
  • High-excursion low frequencies subwoofer
  • Auto-sensing speaker level inputs
  • Cast aluminum enclosure
  • Thermal protection circuit short

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Alpine PWES8 carries a high-excursion powered subwoofer housed in a cast aluminum enclosure that also features built-in amps. The compact design measures just 13.5 inches long and 9 inches wide, which makes it great for under or behind a seat installation either in a SUV, or pick-up truck.

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This under seat subwoofer has one of the most complete side panels, which gives the user the ability to access the Phase, Gain, LP Crossover, and the remote sub level controls. It comes with a particular harness that plugs into the built-in car amplifier, where you also connect the power and ground. This device is easy to connect to your stereo system through the RCA or Auto-sensing speaker level inputs that are located on the side panel.

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Besides the portability, the subwoofer is engineered in a cast aluminum construction that provides durability, long-lasting yet strong audio volumes at 120 watts of continuous power, and a max output of 240 watts. Experts recommend the PWES8 for anybody who wants to add low, punchy, and accurate bass to their stock sound system without compromising space.

4. Infinity Basslink SM Under Seat Subwoofers

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Key Features

  • Sub comes with class D Built-in amp
  • Designed to fit Slim-profile enclosure
  • Energy-efficient and a Subsonic filter
  • Shallow-profile subwoofer driver

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Infinity Basslink SM under seat powered subwoofer is all about providing optimum bass sound in ultra-compact profile design, fitting any vehicle to supplement your stock stereo. The amp that powers the subwoofer creates very minimal heat and doesn’t need much current from the vehicle’s electrical system.

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The intelligent electronic design of the Basslink SM employs high-pass filters and limiters that deliver exceptional quality. The tool offers visible and flexible EQ adjustments for level control adjustments to the system. Meanwhile, its bass boost control allows you to counter peaks or dips in bass frequencies in your car’s acoustic environment.

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One of the top reasons drivers acquire this under seat subwoofer is because of its energy-efficient amplifier, which keeps the subwoofer cool and operational while powering the car subwoofer for extended periods. The high-pass filters and limiters ensure an outstanding bass sounds for a clean bass made for tight spaces.

5. Rockville RW10CA Underseat Subwoofer

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Key Features

  • 800 Watts peak power and 200 watts
  • Sub brings PWM Mosfet power supply
  • Auto turn-on technology for inputs
  • A short and thermal protection circuit
  • Low-level RCA input and a slim design

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The Rockville RW10CA 800 Watt 10-inch is a slim subwoofer that offers a great sounding bass at a great value. Also, the thermal protection delivers long-lasting bass without the worries of overheating. It comes with a MOSFET power supply and high-level inputs with auto turn-on technology for maximum power.

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It brings great value in such a slim (2.7 inches thick) and compact woofer that pretty much fits into any space of your vehicle. The clear, crisp, and great bass response has earned its place as one of the top under seat subwoofers in a very easy setup that saves you time and money.

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The RW10CA peak power reaches 800 watts and 200 watts RMS. It features a low pass crossover filter, phase control, and bass boost, and the inputs and outputs are on the side, which makes it fast and easier to install, even for beginners. This 10-inch sub is one of the only slim under seat subs on the market that is CEA compliant, which assures to deliver the power it claims.

6. Kenwood KSCW11 Underseat Subwoofer for Your Car

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Key Features

  • 75 watts of RMS & peaks at 150 watts
  • Thick voice coil and heat resistant
  • Rigid aluminum enclosure for deeper bass
  • Speaker level and preamp RCA inputs

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Kenwood KSC-SW11 subs were designed for limited spaces and a decent amount of bass. The compact, low profile sub fits under a car seat or trunk. No external amplifier is needed because this is a powered subwoofer with a built-in car amplifier that offers 75 watts of RMS and also comes with remote bass control and power and ground wire harness.

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These subs are packed into an aluminum enclosure, a newly designed damper to improve durability, and a wired remote where you can control the volume, frequency, and phase. Kenwood gives you the biggest thump possible without any rattles.

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Additionally, this small powerhouse from Kenwood produces a low-frequency response equal to a larger subwoofer, which also fills the mid-bass that your factory speakers can’t handle. It does make your mirrors and hits the tones and bass kicks of many music genres like hip hop or heavy metal.

7. JBL Basspro SL Under Seat Active Powered Subwoofers

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Key Features

  • 125 watts of power and peaks at 250 watts
  • Built-in efficient Class D amplifier
  • Sub brings adjustable input sensitivity
  • Wired remote control (optional)

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JNL Basspro SL is high quality, and premium build under seat subwoofer that’s very popular to absolute beginners because the connectors at the back are straight forward and marked, which makes it the easiest to install. The power output peaks at 250 watts and 125 watts of RMS, and it works with a wired bass remote controller for optimum convenience.

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The sub remains cool even when it is played at high volumes, drastically reducing the risk of thermal issues. It has a standard sub cone inside for an impressive punchy, deep bass that fills the entire car. Features a soft start turn-on, a speaker-level (high-level) inputs with audio sense auto-on.

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Bass SL under seat active powered sub comes with a crossover control and flexible EQ adjustments. Moreover, the high-pass filters, limiters, and input options ensure outstanding excecution and installation versatility. If needed, this slim woofer can be nicely mounted in the trunk, yet delivering enough bass and balance that improves your overall sound experience.

8. CerwinVega Mobile VPAS10 Under Seat Subwoofer

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Key Features

  • 200 watts of power for deeper bass
  • Brings a variable low pass filter
  • High-level and RCA inputs and a built-in amp
  • Delayed soft remote turn-on and good bass boost
  • Thermal protection and subsonic circuit

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Cerwin Vega is an award-winning company that has the ultimate all-in-one subwoofer with its mobile VPAS10 version. The subwoofer comes in an aluminum heat sink encased with a built-in amp that fits any vehicle’s under the seat. Overall, a powerful bass sub that brings a unique subsonic filter.

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This subwoofer is impressive for such a small design. The overall performance and quality surpass anybody’s expectations, and it has convenient adjustment controls that are easy to access. The subwoofer is very well built and improves your stock system.

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Additionally, the Cerwin Vega mobile VPAS10 fills in the low end without overpowering the factory speakers. Experts love these subs because they are so compact yet delivers powerful bass, a remarkable sound quality, and a higher level of fidelity. Plus, the adjustable input allows you to customized the settings. A remote control is included.

9. Pioneers TSWX130DA Under Seat Subwoofers

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Key Features

  • Remote phase and bass modes remote
  • Aluminum cone design for deeper bass
  • Digital bass control for dynamic mode
  • Sub brings thermal protection circuit

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Pioneer TS-WX130DA is a compact easy to install active subwoofer with an integrated amplifier that has 50 watts of the nominal output and reaches 160 watts at its peak. Its aluminum cone is specially designed for acoustic suspension enclosure.

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The model carries a digital bass control, one of Pioneer’s top technologies developed to tailor frequency response and increase performance. Without any doubt, this under seat car audio subwoofer best feature is the digital bass control, which has dynamic listening modes, which enhances the system optimization and tunes the output to fit several musical genres.

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The ultra-flat enclosure is made of a tough polyurethane skin, making it resistant to scratches and allowing luggage stacking without hurting the subwoofer nor altering its sound output capabilities. It can fit under seats, behind seats, or inside small storage compartments and still deliver a tight, robust, and high-power bass. If needed, the subwoofer can be removed with ease.

10. Kenwood KSCPSW8 Underseat Subwoofers

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Key Features

  • Underestimated 150 watts of RMS
  • Class D Built-in amp sound storm
  • Thick voice coil and heat resistant parts
  • Magnetic Circuit and variable low pass filter
  • One of the best wired remote control

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Kenwood’s KSC-PSW8 powered car sub delivers impressive bass in a compact design that reproduces a great bass response while fitting under the seat of almost all vehicles. The rigid enclosure of this 8-inch subwoofer eliminates rattles and includes a wired remote for easy bass control.

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The speaker output brings 150 watts RMS ant includes a 16.25′ length harness with power and turn-on wiring and mounting brackets. Moreover, and if it comes with 18-gauge ground wires. It also includes an RCA input for connecting the subwoofer to an aftermarket stereo via RCA cables.

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The Kenwood KSC-PSW8 under seat subwoofer has a rotary volume control (input sensitivity) that allows you to match the input of the subwoofer to the output of the head unit. It lets you hear the lows, especially in tracks with deep bass lines, which makes it a great complement to your stock system.

Best Under Seat Subwoofer Buying Guide

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An under seat subwoofer is primarily used because of space limitations. Nevertheless, they are designed to provide excellent audio quality, outstanding mid and low bass performance, great control panels, and customization options.

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This particular woofer is also very popular for those who want a complete package. That is the subwoofer , the enclosure, which in this case, is an aluminum cast, and in most cases, an amplifier .

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The compact and convenient size of an under seat car sub allows for easy installation in the vast majority of vehicles.

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If you are looking for cost-effectiveness, and easy installation, we recommend that you look at some of the options listed and find the one that best fits your needs.

What to look for when buying an under seat subwoofer?

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Before you get one of the options on our list, there are some aspects to consider because they differ in features, RMS power, and control options, just to name a few differences.

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If you are wondering about the features to look for, here are the seven most important aspects.

Adjustable input sensitivity

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Choosing an under seat subwoofer is only half the work. You need to make sure that they are properly set up, positioned, and equalized to have the best performance.

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When buying or setting up the under seat car sub, which comes with a built-in audio amplifier, check if there is a knob located on the back or side of the tool.

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To give you an idea, the input sensitivity is the maximum voltage strength of an input signal that an amp can handle while producing high-quality sound.

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Be aware that if the signal’s voltage exceeds the input sensitivity of an amplifier, the under seat subwoofer reproduces a distorted sound.

Ease of installation

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Under seat subwoofers are specially designed to be installed under car seats. You may be able to install them on your own without the help of an expert.

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People embrace this type of subwoofer “) because it is a plug-and-play subwoofer that upgrades the stock system. It brings side panels, and some of them also include strap-on and braces to quickly attach them to the under the seat or the trunk.

RMS power handling

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RMS is the most important measure when we speak about sound volume and performance.

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First of all, let’s start with the basics. RMS stands for “root mean square” and refers to the amount of power that a particular handles continuously, without any distortion or blackouts. If you push the tool far away from its capacity, you could damage the woofer.

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Even though the RMS is always lower than the peak power, which speaks to the amount of power that the sub can handle for very short periods, this the key when it comes to performance.

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Drivers pair their RMS power handling with an amplifier that produces the same RMS output for best results. For example, a sub that has an RMS power handling of 800watts is paired with an amplifier that pushes 800 watts of RMS.

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Now, when it comes to under seat car sub, this is NOT a problem because the built-in car amplifier has the same RMS paired for optimum performance.

Shallow mount

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Not all under seat subwoofers offer an all-in-one solution for users.

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The shallow mount woofer is a small yet powerful subwoofer “) that does not come with a built-in audio amplifier to just plug and play it and move forward with your life.

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The Pioneer TSSWX2502 is an example of this type of under seat sub, which, by the way, is not part of the our list. The comprehensive list of the best under seat subwoofers does not contain shallow mounts.

Frequency response

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Bass frequency response 20 Hz refers to an audible vibration measured around 20 hertz. A sub is designed to reproduce these frequencies.

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Typically, the range of human hearing can detect bass sounds around a frequency response 25/ 120 Hz. You will see how different audicular devices respond to frequencies within that range on a frequency response chart .

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It is a key aspect to consider when selecting an under seat car sub or any other device that replicates audio.

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Expert sound technicians recommend limiting the frequency response to 100 Hz or less for much better sound performance.

Quality of the sound

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Speaking about the quality of the sound , this is the end goal of every customer or user that is looking for, in this case, from an electronic device.

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In this sense, sound quality is typically an assessment of fidelity and accuracy. However, the quality of your under seat car sub depends on multiple elements, like the quality of the equipment, the way it is set up, your car stereo, and even the type of wiring you use.

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Make sure that you properly install your device and follow the instructions in the manual. Every brand supplies key guidelines for you to achieve the best sound output possible.

Different between passive and active subwoofers

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There are just two types of subwoofers: active and passive.

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As you know, a subwoofer reproduces the low-frequency sounds (also called as the boom) in an track. Depending on whether you have a passive or active subwoofer, it is going to determine how thumping or enjoyable that boom is.

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The difference between these subs simply means that one contains an amplifier “), and then the other doesn’t. The passive subwoofer does not have a built-in amplifier. In contrast, the active subwoofer does come with an amplifier.

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An under seat car sub has a built-in car amplifier, which enhances and brings out the thump from the subwoofer for a rich and much more enjoyable sound.


How big should your subwoofer speaker be?

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A key feature of an under seat car sub is the size, as they are designed to fit, precisely, under the seat of the car.

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The sizes of the most subwoofers of this category are between 6 and 9 inches. Nevertheless, you should always double-check and measure the dimensions of the under seat and revise the dimensions of the device before purchasing.

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The size or how big it should be will depend on taste and fitting measurements. The most important aspect is that the one that you buy fits under the seat of your car.

What are the best subwoofer brands?

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The best brands, not only for an under seat car sub, are the ones that have the longest history in the industry. That shows user trust and innovation, two major elements of a good brand.

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However, you should not rule out newer brands that have made success over the last few years. It’s all about the quality and the user’s feedback. We believe that the best subwoofer “) brands are Rockford Fosgate , Alpine , Pioneer , and Kenwood.

Which vehicles are suitable for under seat subwoofers?

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Any vehicle is suitable for an under seat subwoofer because all vehicles have that particular space.

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Most car owners that buy this type of subwoofer have a sedan and put the subwoofer under the seat. However, the woofer is a perfect solution to upgrade the sound system and is convenient for SUV’s coupes, hatchback, convertibles, minivans, and almost all vehicles available.

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You just need to ensure that you are under the seat have the proper space for the specific unit that you are going to use.

Does an under seat subwoofer come with a built-in amplifier?

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Almost all under seat car subwoofers come with a built-in amplifier “). That is the beauty of the woofer.

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The intention is for you to have an all-in-one solution for your audio system. That way, you can save time, space and, most importantly, have a bass-thumping tool to listen to your favorite beats without breaking the bank.

Do under seat subs work with a factory car stereo?

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Brands know that comfort and functionality are the top reasons for those who purchase an under seat car sub.

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A well-designed under seat sub works with factory stereos straight from the box because both input converters and external input converters come with the device.

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The “plug-and-play feature” is what drives users who don’t have time to set up a system nor want to purchase new equipment to upgrade their sound system.


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Deciding to purchase an under seat sub is highly appropriate ad convenient when you are looking for a solution that provides the right amount of bass, no matter your vehicle’s year or type.

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An under seat sub enhances the sound quality and makes trips more pleasant, whether you are going to your work across states. These subs can fit under the car seat with ease.

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In the end, when you buy an under seat car sub, what you are getting is the ultimate “plug and play” minimalist sound tool designed to pump a good sound storm bass. If you still want more bass, you will need a bigger sub.