FIG. 1 is a front perspective view of a first speaker unit showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a right side view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a top view thereof;
FIG. 6 is a bottom view thereof;
FIG. 7 is a rear view thereof;
FIG. 8 is a front perspective view of a second speaker unit showing our new design;
FIG. 9 is a front view thereof;
FIG. 10 is a right side view thereof;
FIG. 11 is a left side view thereof;
FIG. 12 is a top view thereof;
FIG. 13 is a bottom view thereof;
FIG. 14 is a rear view thereof;
FIG. 15 is a front perspective view of a third speaker unit showing our new design;
FIG. 16 is a front view thereof;
FIG. 17 is a right side view thereof;
FIG. 18 is a left side view thereof;
FIG. 19 is a top view thereof;
FIG. 20 is a bottom view thereof;
FIG. 21 is a rear view thereof;
FIG. 22 is a front perspective view of a fourth speaker unit showing our new design;
FIG. 23 is a front view thereof;
FIG. 24 is a right side view thereof;
FIG. 25 is a left side view thereof;
FIG. 26 is a top view thereof;
FIG. 27 is a bottom view thereof; and,
FIG. 28 is a rear view thereof.
The broken line showing of the environmental structure of the speaker unit and the area bounded inside of the broken line areas in FIGS. 1–14 is for illustrative purposes only and forms no part of the claimed design.