I need help... I need to know exactly how to power my 2 1200 watt subs indoors, like in my room... I only have a 450 what amp but I worked in my buddies car... so does anyone know how to hook ity up in my room?

I have my system in my room. What I did is I set it up the same way I did in the car. You need to have a car battery. Also you might want to have a car battery charger because the battery will die eventually. You can go that way or you can use a PC power supply, but that involves you using a computer. If you want to try PC power supply make sure that WATTS on the power supply are matched to your amp or higher. If lower it gets distorted. If interested in PC power supply look it up on YouTube. Type ( PC power supply to amp hookup )
If you no how to use it in a car you can do it in your room.