FIG. 1 is a front elevation view of a loudspeaker showing my new design; FIG. 2 is a right side elevation view of FIG. 1, wherein the left side elevation view is a mirror image thereof; FIG. 3 is a rear elevation view of FIG. 1; FIG. 4 is a top plan view of FIG. 1; FIG. 5 is a bottom plan view of FIG. 1; FIG. 6 is a front, top, and side perspective view of FIG. 1; and, FIG. 7 is a rear, top, and side perspective view of FIG. 1.