User manual
26
• Whistling (feedback) occurs when
amplied sound returns to the
microphone and is re-amplied.
Most hearing aids (even ones
costing thousands of dollars)
will whistle when not inserted
properly in the ear canal.
• Lower the volume if it is set too
high, and try using a non-vented
Closed Ear Dome.
• Clean any wax from the AIR
Tubing that may be interfering
with the Hearing Aid.
• If feedback is still an issue try
using the Traditional Tubing
System.
• Conrm that the Hearing Aid
is working properly by removing
the aid and covering the end of
the AIR Tubing or attached
Ear Dome with your nger.
The whistling should stop.
• Try reinserting the Ear Dome
into ear so it ts better. If that
doesn't work, try a different
sized Ear Dome.
Troubleshooting
1. Instrument makes a whistling sound.