Sorry if this is a dumb question, but I have two 1x15 Mesa/Boogie RoadReady cabs that sound great. In my 2x10 diesel the back of the cones are unlabeled, and since it's diesel, I know they are the EVs. I've only played out of one of my 15s thus far, and it doesn't have the stank like my diesel. How do I know if I have the EVs?