Not sure if you have emailed Nick about this yet, but I would advise you do so if you have not. Nick@incriminatoraudio.com Now, on to the problem......I would love for you to be sure the sub is in fact a D2 instead of a D4 before we have to go through the hassle of sending call tags, building new subs, etc, etc. It would be very easy for someone here to have marked the sticker wrong on the box. If it is wrong, we will fix the problem. Sorry for the trouble, and thanks!