Figure 13: Dolby DSR1260/DSR1280 diagram
Attention: Do not damage the sealing gasket, and do not pull the horn more than a few inches
away from the cabinet due to wire length restriction.
Note: In cases where the speaker is not directly over the RLP, the arrows on the horn (Figure 12)
must always point up. In speaker locations where the speaker is not facing directly down, the
arrows on the horn should be pointing toward the ceiling (Figure 11).
5. Rotate the horn 90 degrees clockwise or counterclockwise. Ensure that the arrows molded on the horn
are pointed up toward the ceiling when the speaker is mounted, as this is essential for accurate coverage.
Figure 14: Horn rotated 90 degrees with arrows facing up (Dolby DSR1260 shown for reference)
6. Place the horn back on the cabinet face, and then insert the eight Phillips-head screws.
Horn rotation on the Dolby DSR1260/DSR1280
Dolby DSR1260/DSR1280 Owner's Manual
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8800294 Issue 1
1 January 2022
