Yet again another problem in carputer setup. I am using x-fi notebook card (pcmcia card). I have front and rear channels going from sound card to amp. I have two issues with this setup.

1) All of my speakers produces sound, however only left channels can be controlled in my control panel. So left channels sounds way to loud. Is there any solution to this?

2) Base is terribaly low and can't be heard at all.I have tried bass boost in my creative control panel, but sound terrible. My stock HU was producing amazing bass with same speakers. Any solution to this?