jumbot

Hey guys, yet again i got a new problem withe my civic. I decided to put in some new JBL front speakers in my civic, because the old once sounded poorly. So i put in the passenger side no problem works great. But when i opened the speaker on the drivers side previous owner did some weired wireing to it (cracks and just kinda half *** tied together and so on) so when i pluged in my new speaker, you could hardly understand what vocals were coming out of the speaker, there was no bass at all, and realy just sounded like mush. So i cut his wires to where the stock wireing starts and plugged the speaker in there. The sound definatelly improved quite a bit (dosen't sound like mush), but the sound still have very little bass, it is nowhere nearly as lound as the passenger sound (which has a lot of bass) and really just not balanced at all. Could someone tell me what may be the problem. I still have the stock deck in there if that helps.

Thanx guys