Ill soon be running 2 sundown SA-12 D4's on a saz-1500d v.3 amp. I just got my Pioneer TS-D1720C components in today and i wanted to know what would be a good gauge wire to run them on. Ill probably run them off of a "BARBARA ANN AMPLIFIER" as well (SSA Store - US Acoustics Barbara Ann 4 channel amplifier) But as of right now it will be Head unit