Brand new here and not very experienced in this field. I have determined the polarity of my speakers, and now I want to connect the speaker to my Philips AH384. There is nothing on the pins to tell me which one is + or -. There are two pins....one is flat and rectangular and the other looks like a nail. Sorry for my lack of technichal knowledge, but I hope it is clear what I am asking. Thanks to those in the know in advance!