Your opinion???

I saw these subs on ebay. There 15" jl dub series. Im pretty new to car audio and I wanted your opinion on these. I want to get a system that will BUMP, but doesnt cost $4,000. I plan on like 2 of these some speakers and tweets, etc... Thanx in advance

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=58034&item=5749860276&rd=1

Audiobahn has a little bit of sloppy base but for the money and the sub its a good deal. They are perfect for the beginer. You can beat the crap out of them and they will take it