i have a dvc sub. its 10" idk whether it dual 4 or 2 ohm it no wrote nowhere on the sun WHATSOEVER! there are no labels anywhere. the sub says HAMMER on the cap in the middle of the sub. using a multimeter, how can i find the ohms of both coils. i know that a dual 4 ohm wired right gives u a 2 ohm load i kinda need to know b4 i hook it up and risk killing the sub and or the amp. i know for sure its a dvc sub idk and need to know the ohms. it was given to me used so...