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About Ear Tips & Ear Domes
There are 3 types of domes - open, closed and everything in between that we will
refer to as a hybrid style dome.
An Open Style Dome has large holes and is intended for
people with the typical mild to moderate high frequency
hearing loss who do not need much amplification in the low
frequencies. The larger openings in the dome allow for low
frequency sounds to pass though the dome with minimal
amplification and a more natural sound. It eliminates the "occlusion effect"
which is similar to putting your fingers in your ear and hearing yourself talk.
On the negative side, open domes are the most prone to feedback (whistle).
A Close Style Dome has no holes in them. This allows the am-
plifier to more aggressively boost the sound levels as much as
15-20 dB, especially in the low speech frequencies. Often closed
domes are the better answer for people suffering from a more
severe level of hearing loss. These domes virtually eliminate
all feedback that occurs from higher amplification but maximizes the "occlusion
effect".
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