Portable loudspeaker

FIG. 1 is a front elevation view of a portable loudspeaker showing our new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a side elevation view of one side thereof; and,

FIG. 6 is a side elevation view of the opposite side thereof.

The broken lines and unshaded areas form no part of the claimed design. The pattern in the center of the bottom plan view of FIG. 4 is shown in broken lines. The shading illustrated in the figures is provided merely to represent the contours of the design and is not intended to be illustrative of, for example, texture, material, gloss, translucence, transparency, or surface decoration.