The ornamental design for a speakerpanel for a playback device, as shown and described.
FIG. 1 is an isometric view of a speaker panel for a playback device.
FIG. 2 is a side view of the speaker panel for a playback device of FIG. 1.
FIG. 3 is another side view of the speaker panel for a playback device of FIG. 1.
FIG. 4 is a front view of the speaker panel for a playback device of FIG. 1.
FIG. 5 is a rear view of the speaker panel for a playback device of FIG. 1.
FIG. 6 is a top view of the speaker panel for a playback device of FIG. 1.
FIG. 7 is bottom view of the speaker panel for a playback device of FIG. 1; and,
FIG. 8 is an isometric view of the speaker panel for a playback device of FIG. 1 including a frame adjacent thereto.
The broken lines immediately adjacent to the shade lines form the bounds of the claimed design. Other broken lines indicate the disclaimed portions of the claimed design. None of the broken lines form part of the claimed design.