9
CHANGING FILTERS
Etymotic 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. The filter should be changed if loudness decreases or the
sound quality declines.
Note:
Filters are not reusable.
Filter Removal
Note:
Use the tool to remove the filter.
1. Remove eartip.
2. Insert tool into
the filter.
3. Remove filter.
2. Press gently
against a hard
surface to secure
it in place.
3. Re-attach eartip.
1. Insert a new filter.
Filter Replacement
Note:
Do not use the tool to replace the filter.
Note:
Do not pull or twist
from the cable connector. It's
important to pull straight out.
Summary of Contents for ER4SR
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