Set Up/ Build (1 Viewer)

[Bass God]

Hello Guys and Girls. I am wanting to build a system for listening to music and occasionally playing some game audio through it. I was thinking about using components out of a car. I understand that they are built for small applications such as a car but my room is pretty small (12x14) I need some advice on building the set up. I was thinking of using a 3x 12in subwoofer box with subs from Kicker (https://www.amazon.com/dp/B00KJ11GO4/ref=psdc_10981061_t1_B01GSFIYBM ) but after that I'm pretty lost. so if you could supply a list of what I would need, that'd be great. Or Build your own for what you think I would need under $600 please, Thanks in Advance !!