Just purchased a new rig! GK 115 and 410 cabs both with horns, and a GK 1001RB bass head to go with it. Was wondering how the horns work, and if I should leave the horn switches on for both cabs, or just on either the 1x15 or the 4x10. Thoughts/advice? Also there's a 4/5 string button selection, playing a 5 string I figure I should leave that flicked on.