I got them from ebay actually adn paid total $150 for them brand new. I am using and older Rockford fosgate 75x4 to power all of them right now, and it sounds great(amp is not even turned up half way)(I am saving money to do allot of things all at once) I am going with wither one sub or two(not sure yet) and going to use a 5 channel amp for it all.