Time to get rid of Bose...

Finally after many hours of jamming to rock music cranked up, because that's how I like it, the sub finally blows. This afternoon on my way back from school, the sub began to crack and sound very distorted. I really don't like a lot of bass with my music so I have the level set at 2.

So I've read around and from the sounds of it, upgrading the stock system for an aftermarket one looks like a PITA. Audio/electrical is not my forte either. I'm colorblind. I'm trying to avoid upgrading the whole system, but if I have to, oh well. It won't justify getting another Bose sub so I can blow it again. So would there be a way to upgrade the stock sub with a better aftermarket one? Has anyone tried this? Thanks...

EDIT: I POSTED THIS IN THE WRONG SECTION. MODS PLEASE DELETE!!