I did some more research, and there might be 3 speakers and 1 subwoofer. The GS70 specs say it's 2.1 channel surround-sound, which would mean 2 stereo speakers and 1 subwoofer. But according to http://www.msi.com/p...tealthpr_09.jpg there are 2 stereo speakers in the big Dynaudio strip. So these 2 plus the speaker in the LCD base + the subwoofer would be 3 speakers and 1 subwoofer. But I'm not sure. I'm installing Windows for you to make sure. It would be absolutely awesome if you can get these all to work.
Edit: The official MSI product page states that the laptop has 4 speakers + 1 subwoofer. (scroll down to the Sound by Dynaudio section).
So I think it has 4 speakers (2 in the LCD base and 2 in the Dynaudio strip) and 1 subwoofer at the bottom