Home Speaker Detector

Hi everyone,
Today I will show you a little trick that will help you find out which speaker is which in your home theater system.
Not clear enough?
Let's say you just installed a new speaker system in your TV room, you put up all the speakers, you pulled all the wires to the back of the sound receiver... and if you're like me, you probably hid the wires in your walls.... 
But now you have a bunch of wires in the back of your sound receiver and you don't know which one goes where.
I'll show you how to find out in just a sec. Let's get on to the pictures and you'll see better: