My idmax 12 voice coil looks the same way as does the inside of the VC former. and yes im running a sundown saz-1500d. my voltage drops to no lower than 13.8 volts. the amp is wired to 2 ohm which the amp puts out 800 watts. but according to benchtests it makes closer to 1000 watts. My idmax smelled really bad there for a while but not anymore. so the sundowns make more power than rated so be careful with it.