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Step 2: Using the Security Key to Lock and Unlock the Speaker
The SM 3 speaker uses an included security key to lock and unlock the speaker to its
mounting plate (see the illustration below). The key has two positions: lock and unlock. The
active position of the key is nearest the top of the speaker.
Insert the key into the center of the speaker grill and turn the key, as needed, so that the
speaker is in the unlocked position (see the figure below). There are three small raised
“dimples” on the grill surface that surround the keyhole. Repeat this procedure, but set the
key to the locked position to lock the speaker.
CAUTION: The key must be rotated to the unlocked postion before the speaker is
attached to the mounting plate. Failure to place the speaker in the unlocked position
will result in damage to the speaker lock mechanism should an attempt be made to
mount the speaker.
NOTE: To avoid misplacing the key, store the key in a secure location for future use.
Unlocked
Front View
Rear View
Locked
Twist to
Lock/Unlock
Unlocked
Locked
SM 3 User Guide • Installation 10