I have read that stuffing a cab with acoustic foam will effectively increase the volume of that the driver "sees" by 30%. I know that this can increase low end extension but what effect does it have on the mids & highs? I will probably use Acousta-Stuf Polyfill from Parts Express. What is the best way to stuff a cab with this material? Do I need to keep it away from the back of the driver and port? If so what is the best way to do this?