ProTech Mobile Audio is a U.S. manufacturer producing the highest quality niche mobile audio components. We blend "Old School" quality & sound with modern materials and design. ProTech Strives to offer the best product for the money. These subwoofers consistently outperform product sold for twice the price. High SPL, true Audiophile Sound Quality, and mean Street Pounding systems can be designed with our products. ProTech designs and manufactures innovative components for mobile audio enthusiasts who are not content with underdeveloped & over sold mainstream product. ProTech is available through an exclusive, educated, & experienced independent retailer network.</p>