I am putting a new system in my wifes car. I can get a concept 50x4 amp for 100 bucks with an infinity reference comp set. It sounds pretty good and I know because I installed it. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif I was wondering what sub I could run off of this system for around $100. The amp is underrated and pushes about 200x2 or 70x4.