Okay. So today I bought my boyfriend speakers for Christmas. I bought him the 12" kicker speakers. I have no clue what kind of subwoofer box to get. There's like sealed and ported and a bunch of different things and i know nothing about cars, speakers, anything! So I was hoping for some help. I looked online at some boxes but i didn't know if i was supposed to get sealed or i don't know what. And i didn't know how to tell if it was sealed. And I know there's stuff in the inside of the box like fiberglass or whatever...what if i see a box with nothing in it? I'm reallly confused and your help is much appreciated!