I currently have a Soundblaster Live 5.1 Sound card and it I would like to get all the speakers playing from a 2ch source. Kind of like 5 channel stereo only my receiver doesn't have that feature. However, it does have 5.1 RCA inputs. Could i just take the 2 channels from the sound card and use y splitters to distribute the signal to the rears/center/sub? How would this affect stereo imaging?