I finally got it working through speakers for me. granted i'm on windows 10 64 bit but these steps might help others since it corrected my problem.

1) In the system tray on the bottom right, right click the speaker icon and click playback devices
2) once open, select your speakers from the list. then click configure.
3) Under audio channels make sure it's set correctly. for my I needed stereo as I only have a left, right and sub. i've been told that if you use 5.1 or 7.1 you must have a center channel.