I have a pair of infinity 3 1/2s in my dash and when I turn my headunit up to high the cone hits the tweeter on one of them. I need help with selecting a capacitor to put on them. Id like to block out frequencies below 80hz or whatever you guys think woud be a good crossover point. Next, im not sure what kind of capacitor or any of the specs that go along with them. Please help me out!