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Home » Best Flat Subwoofers Car Audio 2022

Best Flat Subwoofers Car Audio 2023

December 13, 2022 by Editorial Team

When you think about adding a subwoofer to your car stereo, you’re probably imagining a big black box in the trunk or a small cube near the seat. However, there are other options out there that can help you enjoy the sound of a much bigger subwoofer. A flat subwoofer is a type of car audio that doesn’t take up a lot of space and can be mounted behind seats or under seats.

Read on to learn more about these space-saving subwoofers.

# Preview Product Price
1 Blaupunkt GTHS131 GTHS131 Super-Flat 200-Watt-Max Active Subwoofer Blaupunkt GTHS131 GTHS131 Super-Flat 200-Watt-Max Active Subwoofer $149.00 Buy on Amazon
2 Rockville SS8P 400w 8 Rockville SS8P 400w 8″ Slim Under-Seat Active Powered Car/Truck Subwoofer Sub $99.95 Buy on Amazon
3 Planet Audio Px12 Axis Series Single Voice-Coil Flat Subwoofer (12 Planet Audio Px12 Axis Series Single Voice-Coil Flat Subwoofer (12″, 1,000 Watts) (PX12) $69.16 Buy on Amazon
4 Alphasonik AS10DF 10 Alphasonik AS10DF 10″ 1200 Watts 4-Ohm Down Fire Shallow Mount Flat Enclosed Sub woofer for Tight Spaces in Cars and Trucks, Slim Thin Loaded Subwoofer Air Tight Sealed Bass Enclosure $149.95 Buy on Amazon
5 Harmony Audio HA-F124 Car Stereo Flatline Series 12 Harmony Audio HA-F124 Car Stereo Flatline Series 12″ Sub 800W Single 4 Ohm Subwoofer $109.95 Buy on Amazon
6 Alphasonik AS8DF 8 inch 600 Watts 4-Ohm Down Fire Shallow Mount Flat Enclosed Sub woofer for Tight Spaces in Cars and Trucks, Slim Thin Loaded Subwoofer Air Tight Sealed Bass Enclosure Alphasonik AS8DF 8 inch 600 Watts 4-Ohm Down Fire Shallow Mount Flat Enclosed Sub woofer for Tight Spaces in Cars and Trucks, Slim Thin Loaded Subwoofer Air Tight Sealed Bass Enclosure $139.95 Buy on Amazon
7 Polk Audio PSW10 10 Polk Audio PSW10 10″ Powered Subwoofer – Power Port Technology, Up to 100 Watts, Big Bass in Compact Design, Easy Setup with Home Theater Systems Black $249.00 Buy on Amazon
8 Battle For The Atlantic: Greyhound vs Wolfpack-Western Approaches Battle For The Atlantic: Greyhound vs Wolfpack-Western Approaches $0.99 Buy on Amazon
9 Bose SoundLink Micro Bluetooth Speaker: Small Portable Waterproof Speaker with Microphone, Black Bose SoundLink Micro Bluetooth Speaker: Small Portable Waterproof Speaker with Microphone, Black $99.00 Buy on Amazon
10 Blaupunkt 300W 8-Inch Amplified Subwoofer Blaupunkt 300W 8-Inch Amplified Subwoofer $100.28 Buy on Amazon

Our Editor’s Best Flat Subwoofers Car Audio Reviews


Blaupunkt GTHS131 GTHS131 Super-Flat 200-Watt-Max Active Subwoofer

 Blaupunkt GTHS131 GTHS131 Super-Flat 200-Watt-Max Active Subwoofer

Key Features:

  • This flat subwoofer car audio has a 200-watt maximum power output and a 120-watt RMS power output.

  • A flat subwoofer is a car audio component designed to add extra bass to a car audio system that may be lacking in bass response. These subwoofers are usually smaller and more compact than traditional subwoofers, making them a good choice for cars that have limited space.

  • This car audio subwoofer is flat so it can be easily installed in a vehicle. It also comes with a built-in amplifier, which saves space and makes it easier to install.

  • The frequency response of these flat subwoofers is 50 Hz to 150 Hz, meaning that they are designed to reproduce low frequency sound waves in this range. This is ideal for car audio, as it can provide a thumping bass sound without taking up a lot of space.

  • This car audio system comes with an 8-inch preinstalled woofer, which is a type of speaker that is designed to reproduced low-frequency sounds.

$149.00 Buy on Amazon


Rockville SS8P 400w 8″ Slim Under-Seat Active Powered Car/Truck Subwoofer Sub

 Rockville SS8P 400w 8

Key Features:

  • The Rockville SS8P 8″ 400w Slim Under-Seat Active Powered Car/Truck Subwoofer Sub is a subwoofer designed to be installed under a car or truck seat. It is powered by a 400 watt amplifier and has a frequency response of 20-200 Hz.

  • The enclosure for these subwoofers is made out of cast aluminum, which will stay cool at all times. The subwoofers can handle a peak power of 400 watts.

  • This car audio subwoofer has a 100 watt RMS power handling and is equipped with high level inputs with auto turn-on technology, as well as an adjustable input sensitivity. It also has a thermal protection circuit and an overload protection circuit. The phase switch allows for 0° or 180° operation.

  • This car audio subwoofer has a low pass filter of 50Hz to 150Hz, a bass boost of 0 to 12dB at 45Hz, and a built in subsonic filter at 20Hz. It also has a subwoofer level remote control and a fuse rating of single 15A.

  • This flat subwoofer is great for a shopper who wants a car audio system that can produce powerful bass. With a peak power of 400 watts and an RMS power of 100 watts, this subwoofer can handle even the most demanding music. Additionally, the frequency response of 20Hz – 150Hz ensures that you’ll be able to hear all the low-end frequencies that make your music sound great.

$99.95 Buy on Amazon


Planet Audio Px12 Axis Series Single Voice-Coil Flat Subwoofer (12″, 1,000 Watts) (PX12)

 Planet Audio Px12 Axis Series Single Voice-Coil Flat Subwoofer (12

Key Features:

  • This is a flat subwoofer that is 12 inches in size. It is a single voice coil with 4 ohms of resistance. It is a 1000 watt subwoofer.

  • This is a 12″ subwoofer with a single 4 ohm 2″ copper voice coil. This subwoofer is designed for car audio applications.

  • The subwoofer can handle up to 1000 watts of power, and 500 watts on a regular basis. This will give the shopper a deep, rich sound in their car audio system.

  • This car audio subwoofer has a sensitivity of 95dB and a resonant frequency of 35 Hz. This means that it is able to reproduce low frequency sounds accurately and with minimal distortion.

  • This car audio subwoofer has a Poly Injection cone and a Rubber surround. This combination provides a great bass response and is durable.

  • This car audio subwoofer can be used in either a 1 cubic foot sealed enclosure or a 1.2 cubic foot ported enclosure.

  • This car audio subwoofer comes with a 3-year platinum dealer warranty.

$69.16 Buy on Amazon


Alphasonik AS10DF 10″ 1200 Watts 4-Ohm Down Fire Shallow Mount Flat Enclosed Sub woofer for Tight Spaces in Cars and Trucks, Slim Thin Loaded Subwoofer Air Tight Sealed Bass Enclosure

 Alphasonik AS10DF 10

Key Features:

  • This car audio subwoofer is a 10″ shallow subwoofer that is down-fire sealed. This means that it is designed to be installed in a smaller space and that it will fire downwards, into the car. This subwoofer is designed to give you the best possible sound quality in a smaller space.

  • The shopper is looking at a car audio subwoofer that has a peak power of 1200 watts and an RMS power of 400 watts.

  • This is a flat subwoofer for a car audio system. It has a frequency response of 30Hz – 500Hz and a sensitivity of 95dB.

  • This car audio subwoofer features a spun aluminum cone, rubber EPDM surround, and copper wound Kapton voice coil for durability and great sound quality. The MDF construction ensures that this subwoofer will last for years to come.

  • This car audio subwoofer is designed to fit in a designated area in the trunk of your car. It is a box shape with dimensions of 18.7″ W x 6.1″ H x 12.2″ D. This subwoofer is designed to give you the best bass sound possible in your car.

$149.95 Buy on Amazon


Harmony Audio HA-F124 Car Stereo Flatline Series 12″ Sub 800W Single 4 Ohm Subwoofer

 Harmony Audio HA-F124 Car Stereo Flatline Series 12

Key Features:

  • This car stereo subwoofer is 12 inches and can handle 800 watts. It is a single 4 ohm subwoofer.

$109.95 Buy on Amazon


Alphasonik AS8DF 8 inch 600 Watts 4-Ohm Down Fire Shallow Mount Flat Enclosed Sub woofer for Tight Spaces in Cars and Trucks, Slim Thin Loaded Subwoofer Air Tight Sealed Bass Enclosure

 Alphasonik AS8DF 8 inch 600 Watts 4-Ohm Down Fire Shallow Mount Flat Enclosed Sub woofer for Tight Spaces in Cars and Trucks, Slim Thin Loaded Subwoofer Air Tight Sealed Bass Enclosure

Key Features:

  • This car audio subwoofer is rated at 200 watts RMS (root mean square) and 600 watts maximum. This means that it can handle 200 watts of power on a continuous basis, and can handle up to 600 watts of power for short periods of time. This subwoofer is designed to produce low frequencies, so it will add some extra thump to your car’s sound system.

  • This car audio subwoofer has a spun aluminum cone and a high strength rubber EPDM enhanced surround.

  • The flat subwoofers car audio has a final impedance of 4-Ohm and is made with a copper wound Kapton voice coil. The terminals are push type.

  • This car audio subwoofer is designed for low frequencies and has a sensitivity of 90 decibels. The frequency response is 32 hertz to 500 hertz.

  • This car audio subwoofer has an enclosure that is 12.09 inches long by 5.7 inches wide by 9.45 inches tall.

$139.95 Buy on Amazon


Polk Audio PSW10 10″ Powered Subwoofer – Power Port Technology, Up to 100 Watts, Big Bass in Compact Design, Easy Setup with Home Theater Systems Black

 Polk Audio PSW10 10

Key Features:

  • This is a floor-standing subwoofer that is 10 inches and provides extra bass and punch. It is a perfect solution for your small-to-mid size room.

  • This flat subwoofer car audio promises the shopper a rich, deep sound that is still balanced and clear, even at high volumes. It also promises to blend easily with any speaker, and to be able to play the most demanding nodes effortlessly without distortion.

  • This car audio subwoofer has an amplifier with 100 watts of dynamic power. It is made with durable materials and is designed for extended use.

  • This is a subwoofer that can be easily integrated with an existing audio system. It has a continuously variable 80-160 Hz crossover and a 40-160 Hz (-3dB) frequency response.

  • This subwoofer is designed for cars, and has a sleek detachable grille on the front. It also has speaker and line-level inputs, as well as speaker-level outputs on the back. There is also a Phase Toggle Switch for multiple subwoofers.

  • This amplifier produces less than 1% distortion, making it ideal for car audio.

$249.00 Buy on Amazon


Battle For The Atlantic: Greyhound vs Wolfpack-Western Approaches

 Battle For The Atlantic: Greyhound vs Wolfpack-Western Approaches

Key Features:

$0.99 Buy on Amazon


Bose SoundLink Micro Bluetooth Speaker: Small Portable Waterproof Speaker with Microphone, Black

 Bose SoundLink Micro Bluetooth Speaker: Small Portable Waterproof Speaker with Microphone, Black

Key Features:

  • This speaker is designed for people who want good sound quality without having to carry around a large speaker. The Bose SoundLink Micro Bluetooth speaker is small, but produces clear sound with deep bass. It has a custom-designed transducer and passive radiators for balanced sound.

  • This small, portable speaker has a tear-resistant silicone strap that can be used to secure it to a backpack, beach cooler, or handlebars. The strap is reliable and will hold tight through shocks and shakes.

  • The SoundLink Micro is a flat subwoofer car audio speaker designed for durability. It features a rubberized silicone exterior that resists drops, dents, cracks, and scratches, and has a soft-touch finish that almost never shows a mark.

  • This car audio subwoofer is waterproof and dustproof, and can withstand extreme temperatures, liquids, and other substances.

  • This small outdoor speaker comes with a powerful lithium-ion battery. Enjoy up to 6 hours of music and charge anytime via the included Micro-USB cable.

  • This product is a car audio system that includes flat subwoofers and a Bluetooth speaker. The Bluetooth speaker allows you to take phone calls directly from the speaker, while the multi-function button gives you access to your phone’s voice assistant (Siri or Google Assistant).

  • This product is a small Bluetooth speaker that can be updated with the latest software using the Bose Connect App. You can also use the app to customize settings and unlock product features.

  • This car audio is for a shopper who wants to pair Bose speakers for more sound. The audio will allow the shopper to connect the speakers to a Bose smart speaker to extend the listening experience from inside the home to outside.

$99.00 Buy on Amazon


Blaupunkt 300W 8-Inch Amplified Subwoofer

 Blaupunkt 300W 8-Inch Amplified Subwoofer

Key Features:

  • This subwoofer is designed to add extra bass to your car’s audio system. It is a 30 watt, 8-inch subwoofer that is amplified. This means that it will require an external power source, such as an electrical outlet, in order to work.

  • This car audio subwoofer is made with high-quality materials and components to ensure that it is durable and reliable.

  • This car audio subwoofer can handle a maximum power of 300 watts and an RMS power of 120 watts.

  • This flat subwoofer car audio has a variable bass boost, adjustable input sensitivity, and a low-pass filter. These features allow you to customize the sound of your car audio to get the perfect sound for your unique taste.

$100.28 Buy on Amazon


Best Flat Subwoofers Car Audio Buying Guide

Before choosing the best flat subwoofer you should consider following options:

1. Power Handling: The most important thing to know when looking at a new subwoofer is how much power it can handle. You will find two specifications when looking at a subwoofer: Peak Power and RMS Power.

Peak power is the maximum amount of power that the subwoofer can handle in short bursts at a time. RMS stands for Root Mean Square and is the amount of power a subwoofer can handle continuously.

Your amplifier should be equal to or greater than the RMS power handling of the subwoofer you are looking at. Subwoofers are typically rated for between 100 watts and 3000 watts of power handling.

2. Enclosure Type: Different subwoofers are made for different types of applications and environments.

There are sealed box subwoofers, terminated box subwoofers, band pass subwoofers, bass reflex subwoofers, and infinite baffle subwoofers.

This specification tells you what type of enclosure the subwoofer was designed to operate in.

3. Size: You will find different sizes and designs of subwoofers. From slimline to eight-inch, ten-inch, twelve, fifteen, and eighteen-inch.

Knowing the space you have available will help determine the size of subwoofer you can purchase.

4. Wattage: Wattage, or power handling, is a specification that can get complicated. It all depends on the impedance of the subwoofer.

If the impedance is 2 ohms, the amplifier should be equal to or greater than 400 watts. If the impedance is 4 ohms, the amplifier should be equal to or greater than 600 watts. If the impedance is 8 ohms, the amplifier should be equal to or greater than 1000 watts.

5. Frequency Response: This specification tells you the range of bass that the subwoofer is capable of reproducing.

In general, a good subwoofer should be capable of reproducing bass between 20 and 150 Hz. Before purchasing a subwoofer, you should test it out and make sure it is capable of reproducing bass at the frequency you intend to use it for (movie, music, etc).


Flat Subwoofers Car Audio FAQs

1. What are the benefits of flat subwoofers over traditional round subwoofers?

There are several benefits of flat subwoofers over traditional round subwoofers. First, flat subwoofers tend to be more efficient, meaning they require less power to produce the same amount of sound. Second, they tend to have a lower profile, making them easier to install in a car or home theater system. Third, they tend to produce less distortion than round subwoofers, giving you a cleaner, more accurate sound. Finally, flat subwoofers tend to be more durable, meaning they will last longer and perform better over time.

2. How do flat subwoofers produce deeper and more accurate bass tones?

Flat subwoofers are able to produce deeper and more accurate bass tones because they have a large surface area. This allows them to vibrate more air, which in turn creates a more powerful bass sound. Additionally, flat subwoofers tend to be made with higher quality materials, which results in a more accurate reproduction of sound.

3. What are the best places to install flat subwoofers in a car?

There are many different ways to install flat subwoofers in a car. Some people may prefer to install them under the seats, while others may opt to install them in the trunk. Ultimately, it is up to the individual to decide where they would like to install their flat subwoofers.

4. How do you wire flat subwoofers to an amplifier?

The most common way to wire flat subwoofers to an amplifier is to use a parallel circuit. This means that the subwoofers are wired in parallel with each other and the amplifier. The amplifier will send the same signal to each subwoofer, but the subwoofers will be able to handle more power than if they were wired in series.

5. What are the best flat subwoofers for car audio?

The best flat subwoofers for car audio are the JL Audio 12W7AE-3 and the Alpine Type-R SWR-12D4.


Conclusion

There are many great flat subwoofers car audio on the market. Our list of the best flat subwoofers car audio will help you save time researching and choosing the best one for you.

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