I've noticed this in a few different places, and I'm on sundown's website right now.
On the SA-12 subs, the specs look like this.
D2 Model :
Re: 4.57 ohms
D4 Model :
Re: 7.07 ohms
This doesn't make any logical sense. I thought Ohms were only 1 whole number.. like 2 or 4 and such. Other website say that the D2 is 2 ohm dual coils and the d4 is 4 ohm, so why does the website say 4.57 and 7.07?