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Problem Possible cause and what to do
Active noise compensation but
very low volume communication
The volume control is set too low.
̈ Check the volume setting of the headset.
The headphone connection has been pulled out (except HMEC 355, HMEC 355-C and
HMEC 356).
̈ Check to see if the headphone jack plug is correctly connected.
Active noise compensation but
reduced intelligibility
The microphone connection has been pulled out (except HMEC 355, HMEC 355-C and
HMEC 356).
̈ Check to see if the microphone jack plug is correctly connected.
Communications in one ear only
(only HMEC 350, HMEC 352,
HMEC 356 and HMEC 356)
You are using a stereo intercom system but the headset is set to mono operation.
̈ Set the Mono/Stereo switch to “Stereo”.
You are receiving a mono source but the headset is set to stereo operation.
̈ Set the Mono/Stereo switch to “Mono”.