First of all.. this is a remarkably fun system and a "statement" system to prove that it doesn't take top or high end subs and amps to make an amazing sounding system, this is my fun put in almost any car system, i threw it in there so the wiring isn't tucked or tied like I would normally do cause soon it will all be coming out for the big system. These subwoofers are 6 years old. YES 6 years old and the amp is 7years old and they will still get down with the best of low budget systems. I built the box myself and it is 5years old as well. I've had Kicker L7's in this car and MTX's and these Wal*Mart subs can keep up with all they got. This system is to show you don't need tons of money to make a mark, just the will and want to and the knowledge to push it along.