No matter what I attempt, the track is silent when panned 100% left and gets louder as I bring it up toward center. As I continue to pan toward full right, nothing changes at all.
XXYou don't say which DAW you are using,XX --Whoops, my bad, you do say Sonar sorry --
but the above seems to indicate that you are importing with a DAW setting somewhere that puts each track on the R channel only.
Look for a setting n the DAW that allows for import onto both channels.
NOTE: This also describes what can happen if the L channel output is inoperative, either due to software setting or something amiss in hardware at output, bad connection, bad cable, improper soundcard output setting, etc.
--Mac