Audio speaker system

FIG. 1 is a front left perspective view of an audio speaker system showing the claimed design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof; and,

FIG. 6 is a top view thereof.

The broken lines in the figures show portions of the audio speaker system that form no part of the claimed design.