Sennheiser EvolutionWireless EW 300 Series Instruction Manual page 18

Putting the devices into operation
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Unscrew the lower part of the radio microphone from the radio microphone's body
turning it counterclockwise.
When unscrewing the radio microphone during operation, the muting function is
automatically activated. "MUTE" appears on the display panel.
When screwing the lower part of the radio microphone back to the radio micro-
phone's body, the muting function is deactivated.
Slide back the lower part of the radio microphone as far as it will go.
Open the battery compartment cover
Insert the batteries or the BA 2015 accupack as shown on the battery compartment
cover. Observe correct polarity when inserting the batteries/accupack.
Close the battery compartment cover
Push the battery compartment into the radio microphone's body.
Screw the lower part of the radio microphone back to the radio microphone's body ¿.
Charging the accupack
To charge the radio microphone with the inserted BA 2015 accupack (optional accessory):
Use the LA 2 charging adapter to insert the radio microphone into the L 2015 charger
(both the charger and the charging adapter are available as optional accessories).
Changing the microphone head
The microphone head is easy to change.
Unscrew the microphone head.
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