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Sound tube cleaning and care
Whistling is common in small amplifier and is known as 'feedback'.
It is caused by amplified sound leaving the ear and receiving back into
the microphone and being re-amplified. The following tips will help reduce the
effect of feedback/whistle noise:
1. Lower the volume.
Keep volume at lower setting before inserting the instrument in your ear.
2. Secure instrument fitted position
Feedback/whistling noise will stop when the instrument is best fitted/sealed
in the ear with the best fitted dome size.
3. Clear the ear canal of wax or debris.
Seek your hearing care provider for excessive wax built-up
4. Replace the dome or tubing.
Change new dome with a better fitted size.
Make sure the tubing is not broken or torn.
Whistling noise helpful tips
Care of sound tube
Use a soft cloth to remove any dirt and moisture after each used. The provided
cleaning tool and brush is for removing debris / wax built-up inside the sound
tube and dome.
Replace and cleaning of sound tube
1. To replace - rotate the sound tube counter-clockwise from the hearing
instrument case until loosening for removal.
2. To clean - insert the cleaning tool through the threaded end of the tube,push
the cleaning tool all the way through the tubing until the tip of the cleaning tool
comes through the end of the dome.
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