kung hindi naman high end, at pang bayo lang kasya na more or less 10k dyan without Headunit, punta ka RAON, Quiapo.
amplifier 3k
subwoofer12", 4.5k
sub woofer box custom 1k
wires 1.5k
installer labor 1k
if you have extra money, bili ka secondary speakers, rear or passenger up to you.