SPARE WHEEL SUBWOOFER BOX • COMPACT SUBWOOFER • CAR AUDIO
Spare wheel subwoofer box
deep bass without losing your trunk space
Want to add real bass to your car
without installing a large subwoofer in the trunk?
Discover our spare wheel well subwoofers:
compact and discreet solutions designed to make use
of the space under the trunk floor.
SPARE WHEEL SUBWOOFER
Keep your trunk, add the bass
The spare wheel subwoofer box is an
ideal solution for drivers who want to significantly improve
the bass in their audio system while preserving the
cargo space.
Installed in or around the spare wheel well,
the subwoofer remains under the trunk floor depending on the
vehicle configuration and the chosen model.
Preserved trunk space
Keep your usable space
Discreet installation
Under the trunk floor
Active or passive
Depending on your setup
Real bass
Enhance your audio system
WHY IS IT SO POPULAR?
The subwoofer you hear without necessarily seeing
You no longer need to choose between bass
and the available space in your trunk.
The spare wheel subwoofer box uses an area that is usually
underutilized to house the subwoofer.
Groceries & luggage
The trunk remains available for everyday use.
Discreet installation
The equipment can remain hidden under the floor.
Improved sound
Add the bass that is missing from the original system.
ACTIVE OR PASSIVE
Which spare wheel subwoofer box should you choose?
Our range mainly includes powered subwoofers,
but also passive solutions that allow you to use
an external amplifier.
Spare wheel subwoofer powered
The active subwoofer box has its amplifier built in.
It is a particularly convenient solution for adding
a subwoofer to an existing setup without having to
install a separate bass amplifier.
Spare wheel subwoofer passive
The passive model does not have built-in amplification.
It must be paired with an amplifier compatible with
its RMS power and impedance.
ORIGINAL CAR STEREO • OEM
Improve the bass without necessarily changing your car stereo
A powered spare wheel subwoofer box can be integrated
into many original audio systems.
Some models offer high-level inputs that allow
you to pick up the signal from the speakers.
Depending on the vehicle and the product chosen, a high-level input,
an HP to RCA converter, or a specific interface
may be necessary.
SAVE SPACE
An alternative to a large subwoofer in the trunk
Traditional subwoofers can take up a large part
of the cargo volume. The spare wheel subwoofer box
meets a different need: to get more bass
with a much more discreet integration.
Installation under the floor
Depending on the vehicle and the model, the subwoofer can fit
in the spare wheel area and remain under the trunk
floor.
Low height
Several models are specifically designed with a reduced
height to make it easier to fit them into the spaces
available under the trunk.
Discreet mounting
Once properly integrated, the system can become
practically invisible when the trunk floor
is put back in place.
Everyday use
A particularly interesting solution for a car
used every day when you want to keep
the trunk for groceries, luggage, or equipment.
SEVERAL FORMATS AVAILABLE
From ultra-flat subwoofers to circular models
Not all spare wheel subwoofers use the same design.
Some models are circular and can fit
in a rim or a suitable housing, while others use
a flat box designed to fit in the area under the floor.
The choice therefore depends above all on the shape and dimensions
available in your vehicle.
Measure your space before ordering.
There is no universal dimension for all vehicles.
Check the diameter, width, length, and especially
the height available under the floor. Also check
if you want to physically keep the spare wheel:
compatibility depends on the design of the subwoofer box
and the available space.
BUYER'S GUIDE
How to choose your spare wheel subwoofer box?
A few simple checks can help you avoid
a compatibility error and choose the model
that is really suitable for your vehicle.
✓ Diameter — measure the available housing
✓ Height — check the space under the floor
✓ Type — active or passive subwoofer box
✓ Signal — RCA or high-level depending on the model
✓ Power — compare the RMS values
✓ Spare wheel — check if it can be kept
SPARE WHEEL ACTIVE SUBWOOFER BOX
The simplest solution for a complete installation
The majority of references in this category have
built-in amplification. You thus choose a set
where the subwoofer and its amplification are already paired.
Built-in amplifier
No need to plan for a separate mono amplifier.
The amplification module is directly built
into the bass system.
Accessible settings
Depending on the model, you can find different settings
such as level, low-pass filter, phase, or even
a remote control.
GROUND ZERO • MUSWAY • ESX • HIFONICS
Specialized solutions for the spare wheel well
Sound Auto Concept offers different spare wheel subwoofers
from brands specializing in Car Audio such as Ground Zero Audio,
Musway, ESX Car Audio, and Hifonics.
The range allows you to choose between several dimensions,
power levels, and designs to adapt the installation
to the available space and the desired level of bass.
Do not choose solely the model displaying the most Watts.
In this category, the priority is often the compromise
between size, integration, and bass reproduction.
RMS power is important, but the speaker diameter,
the design of the subwoofer box, its efficiency, its location
and the settings also influence the final result.
FOR WHICH USER?
The ideal choice if you want bass without sacrificing the trunk
Family car
Keep the trunk available for luggage.
Everyday vehicle
Enjoy better bass without a bulky installation.
Discreet installation
A Car Audio solution designed to remain barely visible.
FREQUENTLY ASKED QUESTIONS
FAQ – Spare Wheel Subwoofer Box
What is a spare wheel subwoofer box?
It is a compact box designed to make use of the space
located in or around the spare wheel well
under the trunk floor.
Can you keep your trunk with a spare wheel subwoofer box?
That is precisely one of its main advantages.
When the vehicle dimensions allow for an installation
under the floor, the cargo space can remain largely
available.
Can you keep the spare wheel?
It depends on the model and the vehicle. Some subwoofers can
be installed in a rim or with certain spare wheel
configurations, while others directly occupy
its location. Always check the dimensions.
What is the difference between an active and passive subwoofer box?
The active subwoofer box has its amplifier built in.
The passive model requires an external amplifier
compatible with its impedance and power.
Can you install a spare wheel subwoofer box with an original car stereo?
Yes in many cases. Depending on the model and the vehicle,
a high-level input, an HP to RCA converter
or a specific interface can be used.
Does a spare wheel subwoofer box provide real bass?
Yes. These systems use real bass
speakers. The level obtained depends on the model, its design,
the amplification, and its installation.
How to know if a subwoofer box is compatible with my car?
Measure the available space under the floor precisely:
diameter or width, length, and height. Then compare
these values to the dimensions indicated on the product sheet.
Do you need to run a cable from the battery?
A powered subwoofer box requires a suitable power supply.
The cable gauge and protection must be
chosen according to the consumption and the manufacturer's
recommendations.
Subwoofer under the seat or spare wheel subwoofer box?
Both solutions prioritize discreet integration.
The best choice depends on the available space in your
vehicle, the dimensions of the subwoofer box, and the desired level of bass.