You wouldn’t believe how many people have speakers that are “out of phase”. Essentially this means that your wiring is not quite right, and you will not be hearing the sound waves correctly. You may even be hearing the left from the right and vice versa. Having out of phase speakers won’t hurt your equipment, but you won’t get the most out of your speakers if you don’t correct it either.
“Out of phase” typically means that one of your speakers has the positive side of the speaker wire connected to where the negative should be. It is really simple to rectify by tracing your speaker wire back to your receiver/amp, and check that the red connection (the + positive) is connected to the red input, and the black (the – negative) to the black input.
