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Empty Sub Boxes

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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.