Product Warranty

3M
™
WorkTunes
™
Hearing Protector User Guide 13
Frequency Spacing
WorkTunes Hearing Protector is
preprogrammed using North American
frequency spacing between radio stations.
North America frequency spacing between
radio stations differs from frequency spacing
in Europe and Australia which is why
WorkTunes Hearing Protector comes
equipped with the option to choose the
frequency spacing you need based on
where you are located.
To Select Europe and Australia
Frequency Spacing
1. Turn WorkTunes Hearing Protector “Off”
2. Press and hold the Mode Button while
turning the unit “On”. Vocal Assist will
say “Settings Mode”
3. Turn the Tuning Knob until Vocal Assist
says “9 kilohertz”
4. Press the Tuning Knob. A beep will
confirm the selection
5. Turn the Tuning Knob to go to next
feature or press the Mode Button to
exit Settings Mode
To Select North America
Frequency Spacing
1. Turn WorkTunes Hearing Protector “Off”
2. Press and hold the Mode Button while
turning the unit “On”. Vocal Assist will
say “Settings Mode”
3. Turn the Tuning Knob until Vocal Assist
says “10 kilohertz”
4. Press the Tuning Knob. A beep will
confirm the selection
5. Turn the Tuning Knob to go to next
feature or press the Mode Button to
exit Settings Mode
Features
On/Off
Volume
Knob
AM/FM
Button
Mode
Button
Tuning
Knob
Turn clockwise
for On/Volume up
Input
Jack