[geeks] Audio Channel Identification

[Sridhar Ayengar]

Anyone have an audio file that plays through each channel one at a time? 
  I need to hook a subwoofer to my video editing rig, and I can't tell 
which output is for the sub.  There's an output labeled 
"Center/Subwoofer" in the manual, but I don't know if the "right 
channel" side of the stereo pin is the sub, or if it's the "left 
channel" side.

Peace...  Sridhar