With a flashlight can you look at the speaker wires a see which one has the grey stripes on it and what terminal its connected to? That should normally be negative but mine has that wire on the + terminal. I know most say no matter as long as you aren't using a second amp or another speaker reverse of that, but never the less if someone would check for me i'd appreciate it. You may have to twist the wires if like mine the stripes are facing the front of the amp, but they're there. I've swapped speakers a few time and i think thats the way it was stock but i could have reversed them. Thanks.