hey I'm new here, and new to system setups. right now i have a pioneer deh-2300 head unit(just 2 RCA jacks), runnin to an alpine mrp-f240 4/3/2 channel. on one channel i have a 10 Dual sub 375W peak(i would have it bridged across 2 channels but the lack of RCA jacks doesnt help), and on another...