Purchased one of these to replace my my Rocksford Punch 300Watt Max sub and this sub didnt even last one day. Installed, turned on car and had settings on low just to make sure it worked. Came back next morning sub was dead. All settings were on low. If looking for a cheap replacement might want to look into something else. Should have paid attention to some of the reviews on here, wouldn't have made the mistake of purchasing something that is cheaply made. 300Watts Rocksford- 1800Watts Boss and this sub is apparently blown, says enough. Quality over quantity.