The ornamental design for a bowed desktopspeaker, as shown and described.
FIG. 1 is a front perspective view of a bowed desktop speaker according to my new design;
FIG. 2 is a front view of the design of FIG. 1;
FIG. 3 is a rear view of the design of FIG. 1;
FIG. 4 is a left side view of the design of FIG. 1;
FIG. 5 is a right side view of the design of FIG. 1;
FIG. 6 is a top view of the design of FIG. 1; and,
FIG. 7 is a bottom view of the design of FIG. 1.
The dash-dash broken lines, including a front surface, branding, an access panel, and the rear surface, illustrate portions of the speaker that form no part of the claimed design.