The ornamental design for a loudspeakercover, as shown and described.
FIG. 1 is a perspective view of a loudspeaker cover showing our new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a side elevation view thereof;
FIG. 5 is an opposite side elevation view thereof;
FIG. 6 is a top plan view thereof, shown without the environmental base for ease of illustration;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a perspective view thereof, shown with an alternative environmental base.
The broken lines on the loudspeaker cover in the figures illustrate portions of the design that form no part of the claimed design. The broken line base in the figures illustrates environmental subject matter that forms no part of the claimed design.