That's nothin' dude, I've watched my cap drop to 9.6 before!i have a 15 inch version of the sub you want to get, in a solid built box in a hatchback and I am only hitting 136. Very disappointing to me, i think it is because my voltage drops to high 11s //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif