Very silly question, I'm a newbe and have read all different kinds of post. They are very interesting. I went out and bought the Radio Shack Sound Level Meter (analog)and the Digital Video Essentials. Well Need help using the SLM, I have no clue on how to use it, or how to read this thing, do I have to move the speakers and sub woofer around? Can't I just adjust the volume? Please can someone talk plain english? I have a PT47WX42 HDTV and no Digital cable for HD, Onkyo 760/DVD player connected via component cables. Really can use some input on this. Thanks