one speaker not working?!? please help!!
 

ok guys, i own a 93 s13 coupe...and one of my speakers doesnt work, so i was wondering what could my problem be. i just hooked up my new head unit using the wire harness i bought from Best Buy. its a pioneer head and i noticed a couple wires from the old harness that werent connected to anything...meaning there were no wires left on the head unit. anyways...my rear-drivers-side speaker is in-op. all my other speakers are bumpin fine. but just that one speaker is not goin at all. a couple months ago i had my sub wired in thru the rear-drivers-side speaker..i didnt want him to but he did. so the sub is connected to that speakers wires, could that be the problem. i didnt notice it not working cuz i usually only hear the right one when i drive. but my gf pointed it out to me the other day. so anyone got an idea? thanks in advance!

awwww...no one can help me troubleshoot?