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Extra Flat Subwoofers

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EXTRA FLAT • UNDER-SEAT • AMPLIFIED • CAR AUDIO

Extra-flat car subwoofer deeper bass without cluttering your trunk

Discover our extra-flat subwoofers and compact car subwoofers. A discreet solution to boost the bass of your audio system with a subwoofer that, depending on the vehicle, can be installed under a seat or in a confined space.

EXTRA-FLAT CAR SUBWOOFER

Want more bass without a bulky subwoofer?

The extra-flat subwoofer is designed for installations where space is limited. Its low height allows for a much more discreet installation than a traditional subwoofer and, depending on its dimensions and the vehicle, may allow for installation under a seat or in a confined area of the cabin or trunk.

Extra-flat Low height
Under-seat Depending on available space
Built-in amplifier On our active models
Preserves trunk space Less clutter
COMPACT BUT EFFECTIVE

Add the bass your system is missing

A car's factory speakers often have limited bass capabilities. An extra-flat subwoofer can complete the system without turning your trunk into a bulky car audio installation.

More bass Boost the low frequencies of your music.
Discreet installation A format designed for confined spaces.
Everyday use Enjoy the sound while keeping your vehicle practical.
UNDER-SEAT SUBWOOFER

A discreet solution for your car

The extra-flat format allows some subwoofers to be installed under the driver or passenger seat when there is sufficient space. It is a particularly interesting solution for city cars, sedans, station wagons, SUVs, and utility vehicles.

Low footprint

The flat design significantly reduces the height of the subwoofer. This prevents you from taking up a large part of the trunk with a traditional speaker.

Discreet installation

Depending on the vehicle, the subwoofer can be installed under a seat, against a panel, or in another rarely used area. Always check the dimensions before purchasing.

Enhanced bass

A compact subwoofer allows you to add the low end of the spectrum that is often missing from factory speakers and small door speakers.

All-in-one solution

Most models in this category are amplified: the subwoofer and its amplifier are combined in a single compact unit.

EXTRA-FLAT AMPLIFIED SUBWOOFER

Subwoofer + amplifier in a single enclosure

An extra-flat active subwoofer has its own built-in amplifier. Therefore, there is no need to install a separate monoblock amplifier just for the subwoofer.

However, you will need a properly protected power supply, a ground, and an audio signal suited to the chosen model.

16 • 20 • 25 CM

Several compact subwoofer sizes

Our selection includes different sizes to meet installation constraints and the desired level of bass.

Small compact format

The most compact models prioritize ease of installation above all else. They are ideal when space under the seat is particularly limited.

Subwoofer 20 cm / 8"

20 cm is very common for under-seat subwoofers. It offers an interesting compromise between enclosure dimensions and bass reproduction.

Subwoofer 25 cm / 10"

Some flat subwoofers use a 25 cm speaker to achieve more diaphragm surface area while maintaining a low-profile design.

Choose based on space

The largest diameter is not always the best choice. The priority is to select a model that is truly compatible with the available space in your vehicle.

FACTORY CAR STEREO • OEM

Add a subwoofer without necessarily changing your car stereo

Many compact amplified subwoofers can be integrated into a factory audio system. Some have high-level inputs that allow you to retrieve the signal directly from the speakers.

Depending on the vehicle and the chosen subwoofer, a high-level input, speaker-to-RCA converter, or specific interface may be necessary.

Note: "extra-flat" does not automatically mean compatible with all seats.

Measure the available length, width, and especially height precisely. Also check the seat rails, electrical cables, connectors, ventilation outlets and the seat's full range of motion before choosing your subwoofer.

BUYER'S GUIDE

How to choose your extra-flat subwoofer?

To get a good result, first choose your subwoofer based on the available space, then compare its specifications and connection options.

✓ Height — measure the space under the seat
✓ Length / width — check the total footprint
✓ RMS power — compare the continuous power
✓ High-level input — useful with OEM car stereos
✓ RCA — for compatible installations
✓ Remote control — level adjustment depending on the model
FOR WHICH VEHICLE?

A COMPACT SUBWOOFER FOR ALMOST EVERY TYPE OF CAR

City car, compact, sedan, station wagon, SUV, or utility vehicle: an extra-flat subwoofer can be an excellent solution as soon as you want to improve the bass without installing a large traditional subwoofer.

Small car A solution suited for interiors where every centimeter counts.
Family car Keep the trunk available for luggage and groceries.
Utility vehicle Add bass without unnecessarily sacrificing cargo space.
MUSWAY • GROUND ZERO • FOCAL • JBL • CRUNCH

Brands specializing in car audio

At Sound Auto Concept, find a selection of extra-flat and amplified subwoofers from brands such as Musway, Ground Zero Audio, Focal, JBL Car Audio, and Crunch.

Several power levels and dimensions are available to help you choose a compact subwoofer suited to your vehicle and your installation.

Should you choose the extra-flat subwoofer with the most watts?

Not necessarily. RMS power is a useful criterion, but the speaker diameter, its excursion, the available volume, the subwoofer design, and its location also influence the result. For an under-seat subwoofer, compatibility and quality of integration are priorities.

FREQUENTLY ASKED QUESTIONS

FAQ – Extra-flat subwoofer

What is an extra-flat subwoofer?

It is a subwoofer designed with a low height to facilitate its installation in confined spaces, especially under certain seats or in compact areas of the vehicle.

Can a subwoofer be installed under a seat?

Yes, if the subwoofer dimensions are compatible with the available space. Always measure the space before purchasing.

Does an extra-flat subwoofer produce real bass?

Yes. It uses a genuine subwoofer dedicated to low frequencies. However, its performance depends on its design, its power, and its installation.

What is the difference between a flat subwoofer and a classic subwoofer?

The flat subwoofer prioritizes a low height and a reduced footprint. A traditional subwoofer may have a larger internal volume but generally takes up more space.

Do you need an amplifier for an extra-flat subwoofer?

Active models already have their built-in amplifier. However, they still require a power supply, a ground and an audio signal that are properly connected.

Can you keep the factory car stereo?

Yes in many vehicles. A high-level input, an HP-to-RCA converter, or a specific interface may be necessary depending on the equipment used.

Which diameter should you choose: 20 cm or 25 cm?

Do not choose based on diameter alone. First check the external dimensions of the subwoofer and the space actually available in your vehicle.

Does an under-seat subwoofer replace a large trunk subwoofer?

It serves a different purpose. The extra-flat subwoofer prioritizes discretion and a small footprint, while a large trunk subwoofer can be designed to achieve greater output and bass extension.

How do I know if the subwoofer will fit under my seat?

Measure the available height, width, and length with the seat in its different positions. Also check the rails, cables, connectors, and ventilation ducts.