Harman/Kardon Speaker problems.

Hi everyone. I'm having some problems with my Harman/Kardon HK395. When listening, the left speaker sounds much louder than the right. I unplugged the left speaker so that only the right speaker was on. I can turn the volume all the way up and it sounds VERY low. I can barely make out the words. I'm not sure if the speaker is dieing or what.

Also, when I go to adjust the balance, I'll move the slider all the way to the left and the right speaker still sounds VERY low, but I don't think any sound should be coming out of it (since the balance is all the way to the left). I then move the slider all the way to the right and now NO sounds is coming out of the right speaker. Any thoughts?

I'm running:

ASRock 4CoreDual-SATA2 LGA 775 VIA PT880 Pro/PT880 Ultra ATX Intel Motherboard

Realtek high definition audio driver ver:R1.53

Win7 64 Bit RC

I hope no one is confused, just let me know if you need any more clarification.

Thanks!!