Without the right box, even the best subwoofer and amplifier will not perform well. A solid, well-built box that meets the subwoofer manufacturer's volume specifications is the secret to accurate, ground-pounding bass. Picking a box that suits your needs is essential to your subwoofer satisfaction.
Types of Enclosures:
Sealed box - also known as an acoustic suspension. This box is great for all kinds of music and has the broadest range of frequency response. You have the most accurate sound, but you will need to make sure you have plenty of power.
Ported box - also known as a vented enclosure. These boxes really bring out the low frequency by releasing the rear wave of the woofer through a specially tuned port. When paired with compatible woofers, these boxes are great for those who want a little extra boom for their buck but still demand great sound quality.
Bandpass box - The woofer is housed inside of the box with only ports allowing the bass to escape. This type of box has a limited frequency response, but what it lacks in response you gain in SPL. We only recommend this type of box for those on a budget that want a lot of bass and are not as concerned with sound quality.