You are looking at an ULTRA RARE Earthquake 15" competition subwoofer from the 2000's. I just acquired a whole skid of subwoofers directly from Earthquakes warehouse. A lot of these are samples and one off designs. They have all been tested and work perfect. You will never see a lot of these again! Once in a lifetime chance to own an American made bad ass subwoofer! NEW FROM EARTHQUAKES WAREHOUSE!!! Get it while you can!!! Thanks for looking, I am a 15 year ebayer with over a 1900 positive Feedback!!! Check out my other auctions, or got to my store "Legends of Car audio".