5.1 Surround Sound - 1 Speak/Sub Working

I'm using a Logitech Z506 5.1 Surround Sound system (Newegg Link Here) and the only speakers working are the sub and the speaker that controls volume. If I run a test using the sound control, the proper noise comes out of every speaker perfectly fine. However when I try to play music through say, pandora.com, it only comes from the subwoofer and the sound-control speaker.

EDIT1: In Realtek HD Audio Manager, if I set the configuration to 5.1 Speaker and click "Speaker Fill", it plays music out of all but the "front left"-labeled speaker.

EDIT2: In the picture here, the arrow that I drew is pointing to the speaker that isn't working. When the test comes to that speaker, the sound comes out of the subwoofer, instead of the proper speaker

EDIT3: It seems that in the test, when the sound system isn't picking up a speaker, it plays the noise from the subwoofer. I plugged one of the speakers I knew was working into the front-left speaker port on the subwoofer, and it played through that speaker. However the when it tried to test the speaker port that didn't have a speaker in it, the sound came from the subwoofer.

EDIT4: I pulled a speaker from my old setup, and plugged it into the left-front port. The sound now comes out of that speaker like it should.


TL;DR: DoA speaker, replaced with another.

Pop in a dvd and see what it does, or play via itunes or winamp or something. If any of that operates differently, the problem is either with pandora.com or your browser. No idea what the surround sound options are for browsers, I doubt they're compatible at all? Would have thought you'd get stereo sound though at least.

I tried that, the sound still doesn't come out of the front left speaker.

Found out it's a DoA speaker. I simply replaced it with one from my previous system, and it worked fine :P