I was driving around my neighborhood and saw a single beaten up Infinity QE speaker on the curb. After testing the speaker (all works fine), I took out the tweeter, woofer, and crossover out of the cabinet. I would certainly like to make a cabinet for the speaker, but I want to also buy another tweeter, woofer, and crossover to complete the pair. Are the tweeters on the Infinity Q line the same spec wise or are they different?