i was wondering what size box i would need to make fro my two kenwood subs the specs of them are, QTs: 0.66 Vas 82.8 Fs 32hz qms 10.45 qes 0.70
i was after the dimensions of the box they will be run off a single kenwood mono am the kac 819 model and will be in the boot of a VL.

Thanx in advance Hoon

Probably around 4-6 cu/ft.. (hard to say without info from testing..) Keeping in mind that you will still need room around the box.. (no point putting in a large box, only to lose SPL because the bass isn't able to be transferred into the cabin very well..)