The ornamental design for a loudspeaker, as shown and described.
FIG. 1 is a top perspective view of a loudspeaker showing our new design;
FIG. 2 is a front top perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a left side elevational view thereof, the right side being a mirror image;
FIG. 5 is a top plan view thereof; and
FIG. 6 is a bottom plan view thereof.
FIG. 7 is a top perspective view of a loudspeaker showing an alternative embodiment of our new design;
FIG. 8 is a front top perspective view thereof; and,
FIG. 9 is a front elevational view thereof.
The left and right side elevational views and top and bottom plan views of the embodiment shown in FIGS. 7–9 are identical to the left and right side elevational views and top and bottom plan views of the embodiment shown in FIGS. 1–6. The rear of the loudspeaker is not shown and forms no part of our claimed design. The broken lines immediately adjacent the shaded areas represent the bounds of the claimed design while all other broken lines are directed to environment and are for illustrative purposes only; the broken lines form no part of the claimed design.