As you stated, I am pretty sure that you are experiencing placement problems. Try to position the speakers at the same or greater width than the distance between you and the speakers. And at least 18 inches from the side walls, more is better. Living voice tells to toe them so that the tweeter axis cross just before your listening position.
Don't switch cable or anything before beeing done with placement. Those living voice speakers are a little tricky about placement unless you have a large room. In that case, set them wide apart and you are pretty much done.
Please report back.