I do not know if this is the right place to post this question but in any event any kind of assistance would be helpful.
I recently bought a new Home Theater speaker system. I thought it would be interesting to calibrate my system myself.
I bought a Galaxy Audio CM140 SPL meter. Can someone give me a step by step tutorial on using an SPL Meter.
I am not sure if I am doing it correctly for one thing, and second what am I exactly looking to change? The placement of my speakers?

My Sub is the Fathom 113 and it has it's own calibration unit on it and I was told that it is pretty reliable so I am going to let it do it's own thing in the beginning.
I am not the kind of person to get things like this right away especially when no one is directing me whether I am do it correctly. Once I can understand some kind of direction I feel that I will be sucessful in calibrating my system.

Thanks for any kind of assistance.
Frank