Its a dual 4 ohm voice coil. Your options are 2 ohms or 8 ohms. You arent running just one coil are you?
The unit is a 4 ohm unit. Any reason why it would be running at 2? I haven't measured the box but will do so tomorrow when I can find my **** measuring tape. As far as the amp goes its just something I borrowed from my friend to make sure the sub works. I don't plan on running on it anything crazy though as my car was initially ran by a shop with 8gauge since my powered unit was very weak and was sufficient. I don't have plans to run new wiring to support a better amp. I don't think I should with my stock alternator anyways (I believe its rated at 150A ---- 2011 C300)