16 CM • 6.5 INCHES • CAR AUDIO
16 cm subwoofers
for cars
Discover our 16 cm and 16.5 cm car subwoofers:
compact solutions equipped with 6.5-inch subwoofers,
available in passive or powered versions to add
bass while saving space.
6.5" SUBWOOFER BOX
A small format for compact installations
The 16 cm subwoofer is particularly
suitable when space in the vehicle is limited.
Its compact size allows you to enhance the bass without having to install
a large box equipped with a 25 or 30 cm subwoofer.
16 / 16.5 cm
Compact format
6.5"
Car subwoofer
Active
Built-in amplifier depending on the model
Passive
To be paired with an amplifier
LOW SPACE REQUIREMENTS
Why choose a 16 cm subwoofer?
The main advantage of the 16 cm size is its small footprint.
This format allows manufacturers to design boxes
that are easier to fit into small trunks or
installations where every centimeter counts.
Compact format
A 16 or 16.5 cm subwoofer allows for the design of a
smaller box, ideal for city cars,
small trunks, and discreet installations.
Enhanced bass
Despite its small diameter, a properly
integrated 6.5-inch subwoofer can effectively complement
the vehicle's speakers in the low frequencies.
Discreet installation
The small volume of the box makes it easy to integrate when
the goal is to retain as much available space
in the vehicle as possible.
Single or dual 16 cm
Boxes are available with a single subwoofer as well as
configurations using two 16 or 16.5 cm speakers
to increase the radiating surface area.
16 CM BOX VS LARGER BOX
Small diameter does not mean no bass
The subwoofer's diameter is only one of the factors that determine
the final result. The speaker's design, its excursion,
the box volume, its architecture, its tuning, and
amplification also play an important role.
The 16 cm size is primarily chosen when you are looking
for a good compromise between bass and space requirements.
ACTIVE OR PASSIVE
Two solutions for your car audio installation
Powered 16 cm box
An active box has its own built-in amplifier.
It allows you to add a subwoofer to the system without installing
a separate bass amplifier.
Passive 16 cm box
A passive model requires an external amplifier.
You must check the RMS power and impedance
of the box to select a compatible amplifier.
DUAL 6.5 INCHES
Dual 16.5 cm boxes
Another solution is to use two small-diameter
subwoofers in the same box. This configuration
increases the total cone surface area while still using
relatively compact speakers.
Our selection includes dual
2 × 16.5 cm boxes in passive and active versions.
16 cm or 16.5 cm: we are generally talking about the same 6.5-inch family.
Depending on the manufacturer, dimensions may be listed
as 16 cm, 16.5 cm, or 6.5 inches. When purchasing, always refer
to the exact dimensions and specifications
listed on the product page.
BUYER'S GUIDE
How to choose your 16 cm subwoofer?
Even on a small box, check the dimensions,
type of amplification, and technical specifications
before making your choice.
✓ Dimensions — available space
✓ Type — active or passive
✓ Configuration — single or dual subwoofer
✓ Power — RMS rating
✓ Impedance — important for a passive model
✓ Goal — compact, discreet, or more dynamic
COMPACT CAR AUDIO
For city cars, sedans, vans, and small trunks
A 6.5-inch box can be a good choice whenever
space becomes a priority: small cars,
already-full trunks, commercial vehicles, or simply
installations where you want to retain
as much space as possible.
ESX • GROUND ZERO • DD AUDIO • GLADEN
Car Audio Specialty Brands
Our selection of 16 cm boxes includes models
from ESX Car Audio, Ground Zero Audio, DD Audio, and Gladen,
with different designs to meet the needs
of compact car audio installations.
FREQUENTLY ASKED QUESTIONS
FAQ – 16 cm Subwoofers
Why choose a 16 cm subwoofer?
Primarily for its small footprint. It allows
you to add bass to an installation while using
a more compact box than many larger-diameter
subwoofers.
Can a 16 cm subwoofer produce good bass?
Yes. The result depends on the subwoofer's design,
its excursion, the box, the amplification, and
the installation, not just its diameter.
Are 16 cm and 6.5 inches the same?
They generally refer to the same size category.
Depending on the brand, you may find the terms
16 cm, 16.5 cm, or 6.5 inches.
What is the difference between an active and passive 16 cm box?
The active model has its own built-in amplifier.
The passive model must be powered by a compatible
external amplifier.
Is a dual 16.5 cm box worth it?
Two subwoofers increase the total radiating surface area.
The result then depends on their design, the box
and the amplifier used.
Can you install a 16 cm box in a small car?
Yes. It is precisely one of the suitable formats
for compact vehicles, provided you check
the exact dimensions of the box.
What power should you choose for a 16 cm box?
Do not choose based solely on wattage.
Compare the RMS power, but also the product's design
and, for a passive box, its impedance
and the power delivered by the amplifier.
Do you need an amplifier for a 16 cm box?
Yes for a passive model. A powered box already
has its own built-in amplifier, but still requires
a power supply and an audio signal.
16 cm, 20 cm, or 25 cm: which should you choose?
The 16 cm size is primarily chosen for its compactness. If you have
more space and are looking for a different approach
to bass, 20 or 25 cm formats can also
be considered.