For 15 inch subwoofer, everyone has different special concerns about it, and what we do is to maximize the product requirements of each customer, so the quality of our 15 inch subwoofer has been well received by many customers and enjoyed a good reputation in many countries. FDB15 inch subwoofer have characteristic design & practical performance & competitive price, for more information on the 15 inch subwoofer, please feel free to contact us.