Multimedia Loudspeaker test

In the process of repairing my laptop speakers, I needed to determine if I was connecting them up 'in phase' or 'out of phase'. Or in other words, the + wire was going to the + terminal on both speakers.

This is particularly hard to do if your terminals AND wires are not clearly marked.

Here is a site that has some .mp3s of audio clips with in phase and out of phase sounds as well as frequency sweeps and test tones. Very handy for that audiophile 'n you.

Multimedia Loudspeaker test