The processor is built in to the Head unit. The Dex p99rs is an amazing piece.
In regards to the comment about the location of the mids...... Its actually not a bad location. The ideal location for your speakers is equidistant from the ears. the only location that would be better is down in the kick panels, which put them extremely close to that mark. Time alignment makes up for the differences in distance from left and right sides. You can work wonders with a good processor if you know what your doing with it.
Running 2 sets of tweeters was solely for the purpose of raising the soundstage up into center of windshield. CDT audio sells a speaker set called "upstage" which does the same thing, and its basically a set of additional tweeters, and a crossover that seperates your main tweeters from your "supertweeters" placed high on the a pillar, or upper corners of your windshield. Running active, along with the 8 outputs on the p99 allow me to accomplish the same feat with just an additional set of tweeters.
