Hi need help I have 4 brand new fibtl 15 subs I never heard of these subs before. I got them from my step brother who moved and couldn't take them with him. I need help on the amps I have 1 T2500BD, but don't know if that's enough I didn't check the wattage on subs all he told me was that the subs was fully loaded whatever that means. I just need to know how many amps will I need to power all 4 subs not trying to sound like snob I'm not worried about price of amps I just want good ones. I'm really trying to have a loud setup any advice would help thanks.