Etymotic Research hf2, Руководство пользователя

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8
Filters
hf2 earphones have special filters that smooth the frequency
response and prevent earwax from entering the earphones. A
filter is located at the end of the earphone and is visible when the
eartip is removed. If a filter becomes clogged, it should be
replaced. A dirty filter will reduce earphone output. A filter
should be changed if the loudness decreases or the sound quality
declines.
Note: Filters are not reusable.
Filter Removal
Filter Replacement
1. Remove Eartip. 2. Insert tool into
the filter.
3. Remove filter.
1. Insert a new filter and press
gently against a hard surface
to secure it in place.
2. Re-attach eartip.