I purchased the drivers you linked, for my original pair of Kappa 8's. They are louder than the original and even with the dial in the back if you have one it will not help, the one on the back of the crossover. also they will not fit on your original polydome holes without modification. The screw pattern is not the same, its tighter than the original, which means your four screws are going in at an angle to find the original. And your original domes the + / - are across from eachother, the new one thay are on the same side, that means your going to have to cut one side or the other on the cabinet to get both wires to fit on the same side, or bend and possibly break the new driver forcing them into the cabinet. It's not a bad thing, your ear gets used to it i guess In my humble opinion the simply speaker unit was poorly designed, but a quick fix. Somewhere in this forum I do believe I posted pictures of how tough it was to use these in my Kappa 8 speakers.