The owner of this Mazda wanted a 12 Inch subwoofer installed. We installed a new Kenwood radio in the dash to provide a source signal for the subwoofers. Then we replaced all the factory car speakers for nice clear sound. After we build the foundation we installed a custom sub box with Kicker subwoofers. He now has exactly what he was looking for in his Mazda. Professional installation of this Mazda subwoofer done by the tech crew at Audio Express 2929 N. 75th Avenue Phoenix, AZ 85033 623-245-1911 your car audio installation experts. We can recommend and install a subwoofer to fit your car and budget.