Hi all.

I don't know much about car stereos except that mine sucks and hope you all can give me some advice.

I put in new speakers, which didn't do much.
I need my trunk, so a subwoofer is out of the question. Someone suggested a bass tube. This sounds good to me. My question is, can I wire that to the factory radio, or do I need to get a whole new receiver?
Do I need an amp, or can it go directly to the stereo?

Any info will be appreciated!
Thanks in advance!