MDHearingAid VOLT+ User Manual page 28

Device makes a whistling sound.
• Whistling (feedback) occurs when
amplified sound returns to the
microphone and is re-amplified.
• Most hearing aids whistle when not
inserted properly. Try reinserting
the ComfortTIP
so it fits better.
• Lower the volume.
Please note: When an object (hand, hood, person, wall, etc.) comes close to
your ear while wearing hearing aids, you may experience whistling. This is
normal for all microphones, not just microphones in hearing aids.
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into your ear canal
™
• If whistling occurs when raising the
volume, you might need more gain
and should try our closed ComfortTIP.
Call us at 312-366-3899.
• Wax or debris can cause whistling.
Clean tubing/tip and ear canal,
and replace tubing/tip if they
appear worn.