best under seat subwoofer { July 2023 }

Under-seat subwoofers offer several advantages, making them an ideal choice for car audio enthusiasts. Firstly, their compact size eliminates the need for trunk storage. Secondly, they come equipped with built-in enclosures, sparing users the hassle of purchasing or constructing separate subwoofer boxes. Thirdly, the majority of under-seat subs are thoughtfully designed with integrated amplifiers, ensuring optimal sound performance.

In a car, besides essential things like air conditioning and lights, having a good sound system is important for a fun ride. Many cars have built-in audio systems that work fine, but sometimes they don’t produce enough bass. So, to enjoy better music with deeper and punchier low sounds, you can add an under-seat subwoofer. We have some excellent choices of best under seat subwoofer that can enhance your car’s audio experience.

What is the most powerful under-seat subwoofer? { Quick Overview } 

Here is a list of the top ten best under-seat subwoofers.

1: Rockville SS8P – Best Overall

2: Pioneer TS-WX130DA – High Performance

3: Kenwood KSC-PSW8 – Reliable Choice

4: Blaupunkt GTHS131 – Exceptional Sound

5: NVX SoundBass8 – Impressive Bass

6: Gravity GRWF10 – Powerful Output

7: Alpine Electronics Pwe-S8 – Compact and Efficient

8: Rockville RW10CA – Great Value

9: Rockford Fosgate P300-12 – Premium Sound Quality

Best under-seat subwoofer { In-depth analysis }

After researching and investing for two days, Here are the detailed descriptions of the Best underseat subwoofers.

1: Rockville SS8P – Best Overall

Rockville SS8P

The Rockville SS8P, a powerful and compact subwoofer that will bring new life to your car audio experience. This subwoofer is designed to fit snugly in your vehicle while delivering outstanding bass performance. Let’s explore its key features in simple terms.

The Rockville SS8P comes in a sturdy cast aluminum enclosure, which keeps it cool even during intense use. This ensures that it can handle up to 100 watts of continuous power (RMS) and a peak of 400 watts, giving you deep and thumping bass without distortion.

Installing the SS8P is a breeze, thanks to its heavy-duty feet, ensuring stability. The subwoofer operates using a PWM MOSFET power supply, which efficiently manages power consumption and enhances audio performance.

You have multiple options for connecting the SS8P to your audio system. It accepts both low-level RCA inputs and high-level auto turn-on, giving you flexibility based on your setup. The input sensitivity can be adjusted, and the subwoofer has a soft delayed remote turn-on feature, preventing any sudden and jarring power-on noise.

Safety is a priority with the Rockville SS8P. It’s equipped with thermal, short circuit, and overload protection to safeguard the subwoofer and your vehicle’s electrical system.

The subwoofer’s status is indicated by LED lights: green for power and red for protection. It also features a phase switch to adjust the sound’s timing and a low-pass filter that lets you customize the frequency range between 50Hz to 150Hz.

Enhance your bass even further with the bass boost feature, allowing you to increase the bass by up to 12dB at 45Hz. For added protection, a built-in subsonic filter is present at 20Hz, preventing ultra-low frequencies from reaching the subwoofer.

The Rockville SS8P boasts low harmonic distortion, ensuring that your audio remains clear and crisp, with less than 0.4% THD. Additionally, the subwoofer’s high sensitivity of 90dB means it can produce great volume even with a low input power.

Controlling the subwoofer is a breeze with the included remote, allowing you to adjust the subwoofer level to your preference easily.

Measuring at 11.4″ x 8.3″ x 2.8″ inches, this compact subwoofer fits easily in your vehicle’s available space. It offers a wide frequency response from 20Hz to 150Hz, and the high signal-to-noise ratio of over 90dB ensures a clean audio output.

The Rockville SS8P is built to handle 2-ohm impedance and comes with a single 10A fuse rating for added protection.

  • Affordable high performance
  • Compact and space-saving
  • Adjustable input sensitivity
  • Wide frequency range
  • 1-year warranty
  • Lower RMS power

2: Pioneer TS-WX130DA – High Performance

ioneer TS-WX130DA

The Pioneer TS-WX130DA is a small and convenient subwoofer designed to fit under your car seat.

With dimensions of 15.5 x 9.8 x 4.4 inches, it’s compact and won’t take up much space in your vehicle. This subwoofer is made by Pioneer, a well-known and reliable brand in the audio industry.

Inside the TS-WX130DA, there’s a powerful built-in Class D amplifier, which delivers 160 watts at its peak. For everyday use, it provides a continuous RMS power of 50 watts, ensuring steady and clear sound performance.

The subwoofer’s driver size is 8 inches, and it’s made of sturdy aluminum material. The surround system is designed with urethane, adding durability and longevity to the speaker’s life.

What sets this subwoofer apart is its ability to produce low-frequency sounds, ranging from 20 Hz to 200 Hz. This wide range allows you to enjoy deep bass and immersive audio while listening to your favorite music or watching movies.

The TS-WX130DA comes with customizable listening modes, meaning you can adjust the settings according to your preference. The controls include Gain, Frequency, Phase, and Bass, giving you the flexibility to fine-tune the sound to your liking.

If you’re a fan of ultra-deep bass, you’ll love the Deep Mode feature that allows the subwoofer to go as low as 20 Hz, producing intense and powerful output.

It’s essential to mention that this Pioneer subwoofer is backed by a 1-year warranty, providing you with peace of mind and assurance in case of any manufacturing defects.

  • Compact design
  • Powerful deep bass
  • Customizable settings
  • Trusted brand
  • Durable materials
  • Limited RMS power

3: Kenwood KSC-PSW8 – Reliable Choice

Kenwood KSC-PSW8 best under seat subwoofer

The incredibly versatile and innovative Kenwood KSC-PSW8, a true game-changer in the realm of audio equipment. With a wide range of products, Kenwood has consistently delivered excellence in car entertainment systems, headsets, communication devices, and more. And now, they have raised the bar yet again with their all-in-one subwoofer masterpiece.

At the heart of every remarkable audio system lies a powerful amplifier, and the Kenwood KSC-PSW8 goes above and beyond by incorporating a cutting-edge built-in class D amplifier.

This ingenious design choice not only saves you from the hassle of purchasing an additional amplifier for your subwoofer but also elevates the output quality to new heights.

Boasting an impressive 150 watts RMS power capacity and a jaw-dropping peak power output of up to 250 watts, this subwoofer packs a serious punch.

Delving into the auditory experience, the Kenwood KSC-PSW8 astounds with its exceptional frequency response, supporting a range from 35 to 150 Hz. Prepare to be enveloped by rich, deep bass that adds a whole new dimension to your listening pleasure.

Keeping efficiency in mind, the KSC-PSW8 operates at an optimal 81 dB sensitivity, ensuring that it makes the most of your car battery’s power while delivering outstanding performance. Despite its powerful capabilities, the subwoofer remains remarkably power-efficient.

Crafted with precision, the driver of this subwoofer measures 8 inches, providing an extraordinary bass output that belies its compact size. The Kenwood KSC-PSW8 delivers an audio experience that will leave you in awe, making every drive a thrilling adventure.

Speaking of size, Kenwood has ingeniously designed this subwoofer to be one of the most compact under-seat options available. With dimensions of 9.45 x 13.78 x 2.95 inches, it seamlessly integrates into your car, without compromising on audio performance.

As a testament to their commitment to quality, Kenwood offers a generous year-long warranty for this premium device. You can trust in the durability and reliability of the KSC-PSW8, knowing that you’re covered for any unforeseen circumstances.

  • Compact and Space-saving
  • High RMS Power
  • Wide Frequency Range
  • Dimensionally Efficient
  • Warranty Assurance
  • Low peak capacity

4: Blaupunkt GTHS131 – Exceptional Sound

Blaupunkt GTHS131

The Blaupunkt GTHS131 under-seat subwoofer defies expectations, showcasing the brand’s versatility beyond audio-based products. It has carved a niche for itself as a budget-friendly yet powerful choice for all music enthusiasts.

Blaupunkt engineers have worked their magic to create a sleek masterpiece, housing an internal monaural amplifier capable of a staggering 200 watts peak power capacity. 

What sets it apart from the competition is its impressive RMS power value of 120 watts, outshining most other options in this category. With such potency, prepare yourself for a listening experience that will resonate with your soul.

Crafted to perfection, the Blaupunkt GTHS131 boasts a dynamic frequency response range of 50 to 150 Hz, but here’s the exciting part – you have the power to tailor it to your unique preferences. Feel the music flow through your veins as you adjust the settings to suit your mood, whether it’s the heart-pounding bass of hip-hop or the smooth melodies of jazz.

For those who love integrating their sound system with DVD players, you’re in for a treat. The GTHS131 comes equipped with a low pass filter, perfect for harmonizing with DVD 5.1 systems. Now, you can elevate your in-car entertainment to cinema-like levels, immersing yourself in rich, cinematic soundscapes.

One of the most extraordinary features of this under-seat subwoofer is its incredible slimness. Measuring a mere 2.5 inches in thickness, the GTHS131 defies spatial limitations, fitting effortlessly into even the most compact cars. Embrace the unbeatable combination of power and convenience without any additional installation hassles.

When it comes to durability and reliability, Blaupunkt leaves no room for compromise. The GTHS131’s construction, finely crafted from aluminum, ensures not only optimal performance but also longevity. Rest assured that your investment will continue to deliver top-notch audio for years to come.

  • Compact Design
  • High Power Capacity
  • Versatile Frequency Range
  • Convenient Size
  • RCA Inputs
  • Unclear Warranty Details

5: NVX SoundBass8 – Impressive Bass

NVX SoundBass8 best under seat subwoofer

The NVX SoundBass8 is an extraordinary under-seat subwoofer that combines affordability with top-notch performance. Crafted by audio enthusiasts, this enclosed subwoofer is compact and easy to install, boasting an ultra-thin design that seamlessly fits into any space.

The heart of the SoundBass8 lies in its 8-inch driver, meticulously tuned to deliver a flawless sonic experience with pristine output. This little powerhouse packs a punch, with a peak power capacity of up to 300 watts and an RMS power capacity of 150 watts, making it the perfect choice for vehicles with limited space.

Embrace the range of possibilities with the NVX SoundBass8 as it effortlessly handles frequencies between 50 to 150 Hz. The variable low-pass filter ensures that unwanted notes below the set frequency are eliminated, while the adjustable bass boost empowers you to fine-tune the low-end to your exact preferences (0 – 12 dB).

The innovation doesn’t stop there – say goodbye to the hassle of a remote, as the SoundBass8’s intelligent circuitry automatically activates when it detects an audio signal, allowing for a seamless listening experience.

NVX takes pride in delivering a complete package, providing high-quality cables and control wires that simplify installation. Connect with ease using either the low-level RCA cable or high-level speaker wire inputs, catering to your specific setup needs.

Unleash the full potential of your audio system, as the SoundBass8 isn’t just a subwoofer – it comes equipped with a class-D amplifier, elevating your sound to new heights. Experience deep, rich bass like never before, all from an under-seat subwoofer that redefines what’s possible in the world of car audio.

Revolutionize your driving experience with the NVX SoundBass8 – where affordability, performance, and ease of installation meet, ensuring you’ll never settle for anything less than extraordinary sound on the road.

  • Affordable and Compact
  • Powerful RMS Capacity
  • Ported Enclosure Design
  • Built-in Class-D Amplifier
  • Automatic Turn-On Feature
  • Unclear Warranty Description

6: Gravity GRWF10 – Powerful Output

Gravity GRWF10

The Gravity GRWF10, an impressive under-seat subwoofer that deserves your attention! While Gravity might not be a familiar brand, don’t underestimate the power of this gem.

What makes the GRWF10 stand out is its incredible 10-inch driver, which allows it to unleash a remarkable 550 watts of peak power output. That’s quite a punch for a subwoofer in this budget-friendly range! Not to mention, it boasts a solid nominal power output of 100 watts, making it no slouch in performance.

Built with durability in mind, this high-density subwoofer ensures it can handle the rigors of car installations with ease. Its sturdy construction promises longevity and reliability.

In addition to its power-packed performance, the GRWF10 comes loaded with useful features. The inclusion of phase shift allows for improved sound clarity and synchronization. The auto power on/off feature ensures convenience and saves energy when not in use.

The dedicated low pass filter, a must for certain connections, ensures a seamless audio experience. And for those craving more bass, the bass boost feature lets you crank up the output level to suit your preferences.

With dimensions of 17.6 x 13.94 x 5.55 inches, the GRWF10 does offer substantial power, but it might be a bit tricky to install in smaller, compact cars.

The Gravity GRWF10 truly impresses with its top-notch build quality, ensuring it can withstand the demands of the road. Its phase shift capability adds to the overall audio refinement, while the auto power on/off feature brings convenience to your car audio setup. However, it’s important to note that specific warranty details are not readily available at the moment.

  • Powerful 10-inch driver
  • High-density build quality
  • Phase shift capability
  • Auto power on/off
  • Affordable price range
  • Limited warranty details

7: Alpine Electronics Pwe-S8 – Compact and Efficient

Alpine Electronics Pwe-S8

The Alpine Electronics PWE-S8 comes with a built-in class D amplifier, which is incredibly efficient. Unlike other amplifiers, class D circuits waste very little electricity as heat energy when turned off.

The amplifier includes a variable low-pass filter, allowing you to adjust the cutoff frequency between 80 Hz to 200 Hz. Additionally, it offers a variable phase control to ensure all bass notes are present and clear.

To maintain its shape at high volumes, the PWE-S8 features a durable polypropylene subwoofer cone and a rubber surround that protects the cone during intense music sessions.

Both the amplifier and subwoofer have an RMS power of 120 watts, making them compatible and well-matched.

The cast aluminum enclosure efficiently dissipates heat, safeguarding the internal components from damage due to overheating.

The frequency response of the subwoofer ranges from 32 Hz to 150 Hz, making it suitable for handling sub-bass frequencies. However, it may miss some signals in the upper-bass region, leading to slight distortion. But you can easily improve this by using the low-pass filter to adjust the sound to your liking.

  • Efficient Class D Amplifier
  • Durable Construction
  • Powerful 120W RMS
  • Compact Design
  • Variable Filters & Phase
  • Limited Bass Reproduction

8: Rockville RW10CA – Great Value

The Rockville RW10CA Subwoofer is a powerful and reliable audio device that adds deep and booming bass to your music or movies. With its 200 Watts RMS power, it delivers clear and loud sound without any distortion. The subwoofer is designed to be easy to use, making it perfect for both beginners and experienced users.

Featuring a sensitivity of 90 dB, the Rockville RW10CA Subwoofer efficiently converts power into sound, resulting in impressive volume levels.

Its impedance of 2 ohms ensures compatibility with a wide range of audio systems, ensuring you can enjoy great bass no matter what setup you have.

The subwoofer has a wide frequency response, ranging from 20 Hz to 150 Hz, allowing it to produce those heart-pounding low notes that bring your audio to life. Additionally, the low-pass filter can be adjusted from 50 Hz to 150 Hz, giving you control over the bass frequencies to match your preferences.

The Rockville RW10CA is equipped with a subsonic filter fixed at 29 Hz, which helps eliminate unwanted vibrations and distortions, ensuring you get a clean and accurate bass response. Furthermore, the bass boost feature at 45 Hz lets you enhance the lower frequencies up to 18dB, allowing you to customize the bass to suit your taste.

The subwoofer also comes with a phase switch, which helps prevent signal cancellation, ensuring that the bass remains powerful and consistent. On top of that, the thermal protection and short protection features keep the subwoofer safe from overheating and voltage surges, extending its lifespan.

The Rockville RW10CA Subwoofer is designed with a 10-inch powered subwoofer, providing a perfect balance between size and performance. It is easy to install and fits conveniently in most vehicles or home entertainment setups.

Though it excels in delivering deep bass, it should be noted that it may not cover the upper-bass frequencies as prominently. However, its overall performance and ease of use make it a fantastic addition to any audio system, providing an enhanced and immersive listening experience.

  • Powerful 200 Watts
  • Wide frequency response
  • Adjustable bass boost
  • Thermal protection feature
  • Easy installation process
  • Limited upper-bass coverage

9:  Rockford Fosgate P300-12 – Premium Sound Quality

Rockford Fosgate P300

The Rockford Fosgate P300-12 is a powerful subwoofer designed to enhance the sound in your car or home audio system.

It comes with a built-in Class D Amplifier, which means it can produce a lot of volume without taking up much space. This makes it a popular choice for those who want to add some extra oomph to their music.

With a power output of 300 Watts, the P300-12 can deliver deep and punchy bass that will make your music come alive. The frequency response range of 35 Hz to 150 Hz ensures that you’ll feel the full impact of low-frequency sounds, like booming drums and rumbling bass lines.

The subwoofer also gives you control over the sound with its variable Low-Pass Filter (LPF) and Bass Boost features. The LPF lets you adjust the range of frequencies the subwoofer produces, so you can find the perfect balance for your music. The Bass Boost feature allows you to add a little extra kick to the bass, making it ideal for those who enjoy powerful and thumping bass.

Another convenient feature of the P300-12 is the Phase Switch, which helps to improve the overall sound quality. By adjusting the phase, you can make sure that the subwoofer works in harmony with your other speakers, resulting in a more seamless and enjoyable listening experience.

While the Rockford Fosgate P300-12 has many strengths, it’s essential to consider some of its drawbacks. Some users have reported a slight distortion in the upper-bass frequencies. However, this may not be a significant concern for everyone, especially if you prioritize having a powerful subwoofer.

  • Powerful built-in amplifier
  • Wide frequency response
  • Variable Bass Boost
  • Convenient Phase Switch
  • Enhances audio experience
  • Slight upper-bass distortion

Best under-seat subwoofer – Buying Guide

An under-seat subwoofer can be a great addition to your car audio system, especially if you want to enhance the bass performance without taking up much space. When looking for the best under-seat subwoofer, consider the following factors to ensure you make the right choice:

Size and Fitment:

Under-seat subwoofers are designed to fit in tight spaces, such as under the seat of a car or truck. Therefore, it’s crucial to check the dimensions of the subwoofer and ensure it will fit comfortably in the available space in your vehicle.

Measure the available area under the seat and compare it with the subwoofer’s dimensions before making a purchase. Look for compact and slim subwoofers that come with mounting brackets or installation kits, as they will be easier to fit under most seats.

Power Handling:

Power handling refers to the amount of power (measured in watts) that a subwoofer can handle. A higher power handling capacity means the subwoofer can handle more powerful amplifiers without getting damaged.

It’s essential to match the power handling of the subwoofer with the output of your car’s amplifier to ensure optimal performance and prevent any risk of blowing the subwoofer.

Choose an under-seat subwoofer with a power handling rating that matches or slightly exceeds the output of your car’s amplifier. This will prevent distortion and ensure reliable performance.

Frequency Response:

The frequency response of a subwoofer indicates the range of frequencies it can reproduce. For a subwoofer, you’ll want a low-frequency response, as it’s responsible for producing deep bass sounds.

The lower the frequency response, the deeper the bass the subwoofer can produce. Look for an under-seat subwoofer with a frequency response that goes as low as possible, ideally below 30Hz. This will ensure you get powerful and punchy bass in your car audio system.

Enclosure Type:

Under-seat subwoofers come in different enclosure types, such as sealed or ported. Sealed enclosures provide tight and accurate bass, while ported enclosures offer more boomy and resonant bass.

The choice between the two depends on your personal preference and the type of music you listen to. If you prefer tight and accurate bass, go for a sealed enclosure under-seat subwoofer. If you enjoy a more pronounced and booming bass, opt for a ported enclosure.

Build Quality:

The build quality of the subwoofer is essential for durability and long-term performance. Look for subwoofers with robust and sturdy construction, as they will withstand the vibrations and stresses associated with car audio systems.

Choose a subwoofer from reputable brands known for their quality products. Read reviews and consider user feedback to gauge the reliability and build quality of the subwoofer.

Wiring and Connectivity:

Consider the wiring and connectivity options provided by the under-seat subwoofer. Some models come with built-in amplifiers and all the necessary wiring, while others may require additional components to function correctly.

For convenience, select an under-seat subwoofer that includes a built-in amplifier and a wiring kit. This will make the installation process much easier.

Amplifier Integration:

Ensure that the under-seat subwoofer you choose can be easily integrated with your car’s existing audio system or amplifier. Some subwoofers offer high-level inputs and auto-on features, making them compatible with a wide range of car audio setups. Check for subwoofers that have versatile integration options and compatibility with various car audio systems.

Sound Quality:

The sound quality of the subwoofer is a crucial factor in your overall audio experience. A good under-seat subwoofer should deliver clear and distortion-free bass without overpowering the other speakers in your car.

To assess sound quality, read expert reviews and customer feedback. Look for subwoofers with positive reviews regarding their bass accuracy and overall performance.

Space Constraints:

Under-seat subwoofers are designed for vehicles with limited space. Consider the available space in your car and choose a subwoofer that fits comfortably without causing any obstructions or discomfort for passengers.

Measure the space under your seat and choose a subwoofer that fits within those dimensions without compromising passenger comfort.

Price and Budget:

Under-seat subwoofers come in a wide price range, so it’s essential to set a budget and find a subwoofer that offers the best value for your money. Consider the features, performance, and build quality relative to the price.

While it’s tempting to opt for the cheapest option, investing a bit more in a reputable and high-quality under-seat subwoofer can significantly impact the overall audio experience in your car. Look for subwoofers that strike a balance between price and performance.

Best under-seat subwoofer – FAQs

Do under-seat subwoofers sound good?

Yes, under-seat subwoofers can sound good and provide a significant improvement to your car’s audio system, especially when compared to the factory-installed speakers that often lack bass performance.

While they may not produce the same level of bass as larger, dedicated subwoofers in a trunk or custom enclosure, under-seat subwoofers are designed to enhance the low-frequency output in a compact and space-saving form.

Do bigger subwoofers sound better?

Not necessarily. The quality of sound from a subwoofer depends on various factors, not just its size. While larger subwoofers can generally produce deeper bass and handle more power, their performance also relies on factors like design, enclosure, and materials used.

Smaller subwoofers can still deliver excellent sound, especially when appropriately matched with the audio system and room size. Moreover, the overall sound quality is influenced by the integration of all speakers in the system.

To determine which subwoofer sounds better, consider factors such as brand reputation, specifications, reviews, and most importantly, personal listening preferences and the specific intended use.

Should I put foam under subwoofer?

Yes, placing foam under a subwoofer can be beneficial. Foam pads or isolation feet can help reduce vibrations and isolate the subwoofer from the surface it sits on. This can prevent unwanted rattling or interference with nearby objects and enhance the overall sound quality by minimizing resonance.

However, the effectiveness of foam may vary depending on the specific subwoofer and room setup. It’s worth experimenting to see if it improves the audio performance in your particular environment.

Do subwoofers improve bass?

Yes, subwoofers are specifically designed to improve bass performance in audio systems. They are dedicated speakers responsible for reproducing low-frequency sounds or bass notes in music and movie soundtracks.

By adding a subwoofer to your audio setup, you can experience a significant improvement in the depth, impact, and clarity of the bass in your audio content.


The above-mentioned best under-seat subwoofers are compact and powerful devices that can enhance your music experience on the road, delivering deep and punchy bass without taking up valuable space.

These under-seat subwoofers offer a convenient and affordable way to upgrade your car’s sound. Remember to consider factors like size, power, and compatibility with your vehicle. With the right choice, you can enjoy a more immersive and enjoyable music journey wherever you go.

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