I recently put a system in my regular cab Silverado, and i am wondering about where to start (general range) for crossover points. I have 2 sundown sd3 10s running off of an NVX1200.1 and a set of SSA Evil 6.5s and Tweeters running off of an NVX 800.4. It is running active off of a pioneer 80prs. Also, is there a general place to start as far as slopes go? 12db or 24db? I know every install is different and people have different tastes but im just looking for a decent place to start from.