The ornamental design for a loudspeakercover, as shown and described.
FIG. 1 is a perspective view of a loudspeaker showing the new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a rear elevational view thereof;
FIG. 6 is a side elevational view thereof; and,
FIG. 7 is an opposite side elevational view thereof.
The broken lines and unshaded areas form no part of the claimed design.
The shading on the loudspeaker is provided merely to represent contours of the design and does not connote the character of the surfaces such as any specific texture, material, gloss, translucence, transparency, surface treatment, or surface decoration.