do you have the 6 disc cd changer? if you do, i know you want to keep but i recommend you get another headunit for better sound quality. alpine i suggest but anyways about the subs. well, of course everything depends on your budget. but lets say you didn't have big money problems and since you just want one sub i suggest the 12" kicker solo baric L7. man im telling this one sub is all you need. these things give deep bass with sound quality. this sub you can get around for 200. an amp just get a kicker amp with it as well, probably the kx400.1. i think thats around 220. other good brands are jl audio, rockford rosgate, adire, etc...there are plenty of brands out there. good luck!crazy kid said:hello. i'm new to audio stuff for cars. i'm plannin on using my stock system on my 00 accord. but i want to add one 12" sub. i wanted to get a truck box cuz it's small and i need the trunk space. does it sound worse than a regular big box? and wat are good name brands for subs and amps? and how many channels and watts do i need? i just want decent bass, not earthquake shaking bass. i was gonna get two 10" subs but it's too much space. any advice would be appreciated. thanks. how much would a total package cost?