Tail box unique mold molding design, solve the power amplifier placement and closed the bass cabinet, is the impact of the visual effects. Part of the equipment: 2 12 inch subwoofer 1 15 inch subwoofer + 2 station wie song X1502 (1500 kilowatts rated power digital bass amplifier) + 1 station wie song C160 (4 4x160w)