Learning about my room and my sound..


Ok, so I have a Radio Shak SPL and I see all these posts on here about people's speakers and performance, now maybe I am an idiot or overwhelmed but how and where do you start to test the performance and synergy of your speakers in your room? I know there are tons of threads but can it be explained to me please?
All I know is I have a SPL that I use to calibrate, and I have a test disc but it is of high tones, so I assume I need a low frequency test disc and then what please>?

P.S. please be kind I know alot of you may laugh at my question but I really want to know what to do
thanks Chad
chadnliz
Thanks guys, my speakers are pulled out now, they were not in the picture, the panels are 36 inches from back wall, the system is center in room, even if it does not appear so...my room is 13.6 X 19 on the right side wall it opens up to the dining room at about 14 feet back form system wall, on the left wall there is a medium size window centered in room, and on back wall a standard window in center behind couch. There is a small sofa under the window on the side wall aswell. I am just unsure of what to do with the numbers in hand once I have them, if it I get spikes in the highs that would mean I need to absorb some reflections correct? and if I get highs in the low frequency I need to trap some corners perhaps or no?
Ok well thanks a bunch again, and to answer newbie, I am simply trying to check and tweak if needed I dont hear anything alarming, just not sure if I am used to hearing flawed sound if that makes sense. I know my gear isnt the best or anything but I simply want to get the best out of it....cheers
Rives audio sells a test disc which has tracks that are corrected for the Radio Shack meter error. If you use the RS meter, this is the disc to use.
Chadnliz, in response to 'what do I do' with a reading. I assume that you mean that once you have moved your speakers and listening position about and have smoothed out the frequency response as much as possible by doing so, then you should consider how to smooth it out further. Bass is tough to deal with and treatments are frequency dependent so you need to chart the exact frequency you have problems with and then ask for specific advise. Highs typically can be smoothed out by treating reflection points. You can use furnishings or you can get professional treatments, I prefer the former. Keeps it looking like a real room. But, be warned. This is a slow and evolving process. It can take weeks or months of moving and listening before you dial in the optimum set up.

Eldartford, I don't know if you have actually listed to the Rives disc but when I used it in my system I found many of the individual test tones were not steady and because of that were difficult to track. Not so with the Stereophile disc. Is that problem unique to me? What did you experience?
Newbee...Yes I used the Rives disc, but only briefly because I got myself a spectrum analyer that is much easier to use. I don't recall the problem you mention, but I will put the disc on again and look for it. I will also look (with the analyser) at the electrical signal to see if it is stable. What I did notice is that with the higher frequencies quite small movement of the mic causes large SPL variation. You can also hear this when you move your head around.
Thanks again, I will report results and see how to make use of them, and I did find Sean's correction chart....will keep in touch..cheers all!