Specifications

24
• Whistling (feedback) occurs when
amplied sound returns to the
microphone and is re-ampled.
Most hearing aids (even ones
costing thousands of dollars)
will whistle when not inserted
properly into the ear canal.
• Conrm that the hearing aid is
working properly by removing the
aid and covering the hole in the
tubing/domes with your nger
(the whistling should stop).Try
pulling your ear up and back and
reinserting ear piece into ear so it
ts better (or try a different sized
ear piece).
• Clean any wax that may be
interfering with the hearing aid.
• Sometimes feedback may occur
when you have a blockage of wax
in the ear canal, a stiff eardrum
(from a cold, for example) or any
condition that causes sound to be
reected from the ear canal. In
these cases, the t may be ne,
and the feedback will disappear
when the condition is corrected.
Troubleshooting
1. Instrument makes a whistling sound