sold me a sub and amp that would not run together and then would not help when confronted about it, I was assured by the sales associate(jose) that it would work. it worked for a minute in the store while they hooked it up and tested it but once it was hooked up(to the same amp they tested it on and ran for a period of time it stopped working and would not work again), I was told the ohms did not match up..the amp had more ohms than the sub. they should not have sold it to me as a set if this was the case. now i am stuck with a bad sub because of them. buyer beware of this store. just go buy a new one at best buy. it will be less headache. purchase 12-31-2013 and contacted them after the install on 1-2-2014 so it wasnt an extended time period. it was only a little over a week.