Kenuve

I purchased an new pc with Klipsch Promedia 2.1 speakers and I am having sound problems. The 2 satellite speakers work fine, but I do not get any sound from the subwoofer. Initially, I thought it was my Audigy 2 ZS sound card, but after switching the speakers with a few different systems I learned all my other speakers worked fine on the Audigy 2 card. My Klipsch Promedia 2.1 speakers, however, have the same subwoofer problem on all my systems and on portable audio devices. Anyone else have this problem?