good choice on the shivas!! :thumbsup:

1000 watts is a overkill on these drivers but I recommend them in a sealed enclosure.... 1.5 or more for each chamber

I just got my edesign 12 K series lastnite and already had made my box last weekend... 1.2 cubic feet sealed. The little guy is only running 250rms from a JL amp. From comparing it to a 15 inch Rockford punch amp... this little guy made me smile at the accuracy of bass tones I was missing from the RF.

If you're going to port the shivas.. jeeziz you better not want to use your trunk space for anything else.. it's going to be a big box.