i know what subs i want either vibe black air 15" or alpine the alpine 12" type R's but the problem i have is do i choose a ported or closed box? ive asked before, and have been to many car audio places but they only ever have sealed subs to listen to. i have only ever heard one ported sub before and the bass was massive managing to near enough shake the poor Nova it was in to pieces. At the moment i have the standard front 13cm speakers, with the GZ Radioactrive GZRF 52's 13cm speaker in the back, and i am happy with their sound and bass (even though im going to change the front ones in a few weeks) but i want some really meaty bass that will go super low, shake and go loud without distorting or sounding crap, plus im 17 and dont have thousands to throw away so i was looking at about 5 - 600 for the whole setup.