I'm building a pair of home speakers with 4 Polk MM2124 subs and 2 pairs of Polk MM6 components that came from my old car which was total from hail damage. Each speaker will have 2 subs, 2 mids, and 2 tweeters, all 4 ohms ran in series to produce an 8 ohm load. What kind of crossover should I use to split the signal to my subs from the components? The MM6's came with crossovers so I think I just need a 2 way crossover at 80 htz. My concern is that I may need something that can adjust the power delivered to the subs or mids in case the volume levels don't match up. Any ideas?