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Hifonics
ZEUS ZX82A - 8" 200W RMS Active Subwoofer with Passive Radiator
Focal
BombA BP20 – 20 cm Active Subwoofer Enclosure 150 W RMS
Ground Zero Audio
Ground Zero GZCS 20SUB-ACT – Compact 8" 340W Active Subwoofer
Rockford Fosgate
Rockford Fosgate P3S-1X8 – Punch Series 8" 300W RMS Shallow Subwoofer Enclosure
Ground Zero Audio
Ground Zero GZIB 20BR-ACT - 8" 100W RMS Active Subwoofer
Rockford Fosgate
Rockford Fosgate PS-8 – 8" 150W RMS Slim Amplified Subwoofer
DD audio
DD AUDIO LE-508.3a-D4 – Caisson 3 x 20 cm 1500 WRMS 0,7 ou 2,66 Ohm
Discover our 20 cm / 8-inch car subwoofers: compact, active or passive, Bass Reflex, shallow-mount, bandpass and dual subwoofer models to boost bass without necessarily installing a large box in the trunk.
The 20 cm subwoofer is a particularly versatile format in car audio. Larger than a small 16.5 cm, while remaining compact compared to 25 or 30 cm formats, the 8-inch subwoofer is suitable for many vehicles and installation styles.
The 20 cm is particularly interesting when you want to maintain a reasonably compact installation while adding a real bass section to the audio system.
The 20 cm subwoofer allows manufacturers to offer relatively compact boxes, suitable for small and medium trunks as well as discreet installations.
The 8-inch is found in many designs: sealed box, Bass Reflex, bandpass, shallow-mount, active or passive.
To obtain more radiating surface area, some boxes use two 20 cm subwoofers in a single enclosure.
Depending on the subwoofer and the box design, the 20 cm format can be suitable for both a daily improvement of the audio system and a more ambitious installation.
An amplified 20 cm subwoofer box directly incorporates
its amplifier. It thus allows you to add a subwoofer
to the installation without having to select and install
a separate mono amplifier.
The box must nevertheless receive a power supply,
a ground, and a properly installed audio signal.
Two boxes equipped with a 20 cm subwoofer can have very different behaviors. The enclosure architecture plays a major role in the final sound.
A sealed box does not have a port. Its internal volume must be adapted to the subwoofer and the recommendations provided for it.
Bass Reflex uses a port tuned to the volume of the box. It notably allows exploiting the radiation of the port around the tuning frequency.
Bandpass uses several acoustic volumes. This architecture can offer significant performance over a determined frequency range.
Slim or shallow-mount models prioritize reduced depth to facilitate their integration into vehicles where available space is limited.
Several models in this category use two subwoofers
of 20 cm. This configuration increases the total surface area
of the cones while maintaining the use of relatively compact
speakers.
The result then depends on the design of the subwoofers,
the box volume, and the amplification used.
Two boxes of the same diameter and the same stated power can produce a very different result. The performance of the subwoofer, its excursion, the box architecture, its tuning, and the installation in the vehicle also have a major influence.
Start by determining the available space and whether you want an active or passive model. Then, choose the box architecture and check its technical specifications.
City car, compact, sedan, station wagon, SUV or utility vehicle: the 20 cm box is an interesting solution when you are looking for real bass while keeping a reasonable size.
Find at Sound Auto Concept a selection of 20 cm boxes from specialized brands such as ESX Car Audio, DD Audio, Ground Zero Audio, Hifonics, Musway, Rockford Fosgate, Alpine and Audison.
The 20 cm offers an interesting compromise between size and bass reproduction. It is particularly suitable for installations where you do not want to use a large 30 cm box.
Yes, these terms generally refer to the same category of subwoofers. The exact dimensions may vary slightly depending on the manufacturer's design.
Yes, a good 20 cm properly installed can produce significant bass. However, the result depends on the subwoofer, the box, the amplification, and the vehicle.
The active box has its amplifier built in. The passive model must be connected to a compatible external amplifier.
It is a box using two 8-inch subwoofers. This configuration notably increases the total radiating surface compared to a single identical speaker.
Check the box's RMS power and especially its impedance. The amplifier must be able to provide suitable power for the resulting impedance.
The 20 cm generally prioritizes compactness more. The 25 cm provides a larger radiating surface, but the choice depends mainly on the available space and the desired result.
The 20 cm is interesting for maintaining a reasonable size. The 30 cm offers more cone surface area but generally requires more space.
Yes in many vehicles. Depending on the box and the factory system, a high-level input, an HP to RCA converter or a suitable interface may be necessary.
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