I have a pioneer GMD 9605 amp. It can produce 75W @ 4 ohms and 100W @ 2 ohms. Ive already installed a set of component speakers that are rated at 4 ohms for 100W in the front. I was looking for some 6 x 9 speakers for the back and i found the infinity kappas that are rated at 2 ohms for 110W. My...