I have read most of the FAQ threads re: building your own cab, but had a thought that wasn't covered, at least I didn't find it. I have two different 10" speakers that I am thinking about putting into one cab. I am using the WINISD program to help with box size and tuning. I have not actually decided to do this yet, because what I have to work with could make it a big problem. Just playing with it to see if I COULD. My questions: when plotting the response curves for each driver, should I use HALF the actual box volume? Reason for this question, if I run plots for a box with two identical drivers, it will have the same curve as one driver in a box with half that volume, except the 2x has a higher SPL. Second, how would I balance SPL so that the louder driver doesn't drown out the other one - maybe a pot to reduce voltage to the louder one? How would I calc the correct max resistance needed?