The ornamental design for a speaker, as shown and described.
FIG. 1 is a perspective view of a speaker, showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left-side view thereof;
FIG. 5 is a right-side view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines are for environmental purposes only and form no part of the claimed design.
The shade lines in the figures show contour and not surface ornamentation.
The inventors contemplate that other embodiments of their design may include any part, portion, element, or combination of elements of the claimed design.
References to “side”, “top”, and “bottom” in the figure descriptions are not meant to require certain in-use orientation; a speaker according to the claimed design may be used in any orientation.