EMPTY BOX • SUBWOOFER • BASS REFLEX • CAR AUDIO
Empty subwoofer boxes
install the subwoofer of your choice
Discover our empty car subwoofer boxes:
20, 25, 30 and 38 cm speakers, single or multiple,
with different volumes and Bass Reflex tunings to build
your Car Audio system without building your own box.
EMPTY SUBWOOFER BOX
Do you have the subwoofer? Choose the right box
The empty subwoofer box allows you to install
your chosen bass speaker in a pre-
built speaker. It is a practical solution to avoid cutting,
assembly and the complete construction of a custom box.
20 cm
8 inches
25 cm
10 inches
30 cm
12 inches
38 cm
15 inches
READY TO RECEIVE YOUR SUBWOOFER
Save time on building your system
You have already chosen your subwoofer but you do not want
to build its entire box? Our empty boxes
allow you to start with a box already built,
available in several volumes and configurations.
Ready to equip
Install a compatible subwoofer.
Several volumes
Choose a box suited to your subwoofer.
Single or multiple
1, 2 or more subwoofers depending on the box.
WHAT DIAMETER?
8", 10", 12" or 15" empty box
Start by selecting a box corresponding
to the nominal diameter of your subwoofer.
8"
20 cm subwoofer
10"
25 cm subwoofer
12"
30 cm subwoofer
15"
38 cm subwoofer
Empty box 20 cm / 8"
For 8-inch subwoofers and systems
looking for a relatively compact footprint.
Check the volume and cut diameter before purchase.
Empty box 25 cm / 10"
A versatile solution to mount a 10-inch subwoofer
in a box already built,
without having to do all the woodworking.
Empty box 30 cm / 12"
The 12-inch format is widely represented in our range,
with different volumes and single
or multiple configurations.
Empty box 38 cm / 15"
For systems using a 15-inch subwoofer.
Several volumes and tunings are available depending
on the type of bass sought.
BASS REFLEX • SLOT PORT
Also choose the volume and tuning of the box
An empty box should not be chosen solely
because your subwoofer has the right diameter.
The internal volume and, on a Bass Reflex, the port tuning
directly influence the behavior of the system.
Our selection includes boxes with different volumes
and tuning frequencies to meet several types
of Car Audio installations.
Important: same diameter does not automatically mean compatible.
Two 12-inch subwoofers may require different enclosure volumes. Check the subwoofer manufacturer's recommendations,
the box's internal volume, its tuning, the cut diameter
and the available depth before ordering.
BASS REFLEX BOX
Why is the tuning frequency important?
On a Bass Reflex box, the volume of the enclosure and the dimensions
of the port notably determine its tuning frequency.
The choice must be consistent with the subwoofer and the desired
use.
Lower tuning
Some boxes are designed with a relatively low tuning
to favor use oriented towards the bass
frequencies. The result always depends on the subwoofer used.
Higher tuning
Other speakers use a different tuning to
meet another reproduction or performance objective.
There is no ideal frequency for all subwoofers.
SINGLE • DOUBLE • TRIPLE
From 1 to several subwoofers in the same box
Do you want to install several subwoofers?
The collection also includes double
and multiple empty boxes allowing to increase the total radiating surface
without building a complete custom speaker.
Always check the available space in your vehicle,
but also the final impedance and the necessary amplification
when several subwoofers are used.
BEFORE ORDERING
How to choose the right empty box for your subwoofer?
The diameter is only the first check.
To get a coherent assembly, compare the characteristics
of the box with the technical recommendations of your subwoofer.
✓ Diameter — 8", 10", 12" or 15"
✓ Cutout — check the actual diameter
✓ Depth — check that the motor fits
✓ Internal volume — compare with the sub's recommendations
✓ Tuning — important on a Bass Reflex
✓ Dimensions — check your trunk
EMPTY BOX OR CUSTOM-MADE?
A quick solution for many Car Audio projects
The ready-to-use empty box is particularly interesting
when a reference already has the volume and tuning adapted
to your subwoofer. For a very specific project, custom
construction may still be necessary.
No complete woodworking
A box already built to speed up your installation.
Choice of subwoofer
You remain free to select the right speaker.
Several configurations
From the small 8" to the double 15" depending on the references.
DD AUDIO • LOUD AS HELL • MTX • FOUR-CONNECT • GLADEN
Boxes for different Car Audio projects
Find at Sound Auto Concept a selection of empty
boxes for subwoofers of different brands and designs,
with compact, single, double and multiple models.
Several volumes and Bass Reflex tunings allow
to select a speaker consistent with your subwoofer
and your installation goal.
FREQUENTLY ASKED QUESTIONS
FAQ – Empty boxes for subwoofers
What is an empty subwoofer box?
It is a speaker intended to receive a subwoofer
sold separately. The box is already built but
the bass speaker is not included.
How to know if my subwoofer is compatible?
Check its diameter, the cutout diameter, its mounting
depth and especially the recommended enclosure volume
by its manufacturer.
Does a 30 cm subwoofer fit in all 12-inch boxes?
No. Even if the nominal diameter matches, the cutout,
the depth and the required volume can be different.
What box volume to choose?
Consult the subwoofer manufacturer's recommendations.
The speaker parameters determine the most suitable
volumes and enclosure types.
What is a Bass Reflex box?
A Bass Reflex box has a tuned port.
The box volume and the dimensions of this port
notably determine its tuning frequency.
What tuning frequency to choose?
There is no universal frequency.
The choice depends on the subwoofer, the vehicle,
the type of music and the desired result.
Can you install two subwoofers in an empty box?
Yes if the box is specifically designed for two compatible
subwoofers. Also check the available volume
and the final electrical mounting.
Empty box or custom-made construction?
An empty box ready to use saves time
when it matches the subwoofer's needs.
Custom-made remains interesting for projects requiring
a very specific volume, tuning or shape.
Is the subwoofer provided with the empty box?
No when it is clearly indicated "empty box".
You must choose and install separately a subwoofer
compatible with the speaker's characteristics.