TODAY I BOUGHT 2 CROSSFIRE BMF W15D'S AT A PAWN SHOP. I HOOKED THEM UP INSIDE TO SEE IF THEY PLAYED, AND THEY DID. BUT WHEN I TOOK THEM TO MY CAR I TOOK THEM OUT OF THE BOX BECAUSE I DIDN'T NEED IT AND THREW IT IN THE DUMPSTER. I NOTICED ONLY ONE COIL ON EACH SPEAKER WAS HOOKED UP AND TESTED...