On a dual voice coil sub, each coil should be separate, correct? I have a dual voice coil sub with dual 2 ohm voice coils. They each measure fine separately. If I measure across the 2 voice coils, I get very low ohms ( short) like they are connected together. This doesn't seem normal to me. The reason I measure across the 2 coils is because I noticed that when I wired the 2 coils in series, I was getting only 2 ohms when it should be 4 ohms wired that way. This is when I found that the 2 coils were shorted together somehow.