Subwooferit

This Xcelsus Audio Solidus series subwoofer delivers a distinct punch and very good sound definition but also has the ability to play loud and low. For this subwoofer, the recommended ventilated box volume is 45 liters with a 4 ”X 300mm port size. Recommended closed box from 30... 

From the first sound you will like what you hear. This is a really good subwoofer. High-quality, detailed Hi-Fi bass for natural sound. 

Xcelsus Altum Series Subwoofers Sealed for Perfection The Altum XAS12 subwoofer was designed as the perfect solution when wanting to upgrade your car audio system, with a more efficient, precise, and powerful bass reproduction. A common question is always sealed or ported enclosure? For... 

From the first sound you will like what you hear. This is a really good subwoofer. High-quality, detailed Hi-Fi bass for natural sound.