Who says you have to have a subwoofer box in the first place? Well, you always do, but your subwoofer box can come in different styles as we have seen and one of those styles happens to be the free-air subwoofer box. A free-air subwoofer box is exactly as it sounds. In this case, the subwoofer is mounted on a board that can be attached to the rear deck of the car. However, it can also go in the trunk against the rear seat.

The free-air subwoofers are great because they are able to save a lot of space in a car that may not have much of it. They sit outside of any real box, and they can be placed in a variety of areas as long as the back of the speaker is against something hard and not allowing sound to flow freely out of it.

The trunk of the car is the perfect enclosure for this because it will house the subwoofer and isolate the sound from the back of the speaker because it is pressed against the rear seat. This then fixes the problem of the sound being cancelled out, which is an issue with other subwoofers that are not in an enclosure.

Typically, these types of free-air systems will have a flat frequency response, and you need to ensure that you buy a subwoofer free-air system for your car stereo system that is built specifically for free-air use. If you fail to do this, you could be sacrificing your sound quality and bass quality since you may have a subwoofer that is designed for a ported subwoofer box, in a free-air enclosure.

Many car owners love having a free-air subwoofer enclosure for their car stereo system because it is much more convenient than other types to install. There is no mounting it in the back seat, moving seats or anything like that. The most you have to do is put something for it to rest on in the rear deck, or place it properly and secure it in the trunk.

One thing that should be noted of these free-air systems is that they have lower power handling levels than those that are housed in an enclosure. This means that you won’t quite get as good as a level of bass as you would from the others, but the convenience and ease of install of these more than makes up for it for some people.