Hey guys im new here, i guess just kinda getting into the whole audio scene, not new to forums though. Anyway im a sophomore in college and have a little system for just listening to music, i have a sony receiver powering 2 tower speakers, their made by MCM audio which is a company here in dayton ohio where i live, not sure if you guys have ever heard of them, they put out pretty decent sound, i have replaced the mids and tweeters in them with dayton audio ones. but i am looking to add a little bass to my mini system haha. i am in college so i wanted to spend around 100 bucks. i know im not going to get a very good one for that price but im just looking to add a little bass. What would you guys buy?