im not familiar with prices pero alam ko around 20k - 30k RF amp brandnew the DLS mga 10k - 15k ata. im not really sure. hindi kasi ako nagsesetup ng sounds. hehe

if you can get a set of seps na meron 225 rms, mas ok kasi busog ang buong setup. im not sure what brands have this. i think morel has a seps set that can handle 225 rms. ask around lang po.

you can buy it from any sound setup shop. those brands are not usually available sa mga low end shops. candy shop sa banawe has them, mickeys up north, kid audio, im not sure if jeff tan at araneta car accessories have them.