I have 4 little stereo speakers, each has a red, blue, and copper wire. I've soldered all of the blues together, the reds together and copper together onto the jack. I am not getting any sound though!

And something weird, when I put metal between the red and blue, connecting them temporarily, I get one of the 4 to turn on.

What did I do wrong!? All copper is on the negative longer part of jack, and all the red and all blue are on separate positive connectors (the side connectors).
Each speaker was set up to plug in with 3.5mm Jack, and that is the size jack I want to put all into.