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Identifying the earmolds
Right earmold: •red dot
Left earmold: •blue dot or no marking
Insertion
Moisten mold for ease of insertion. Pull the ear
outward and upward while easing the mold into the
ear canal.
Cleaning
Remove attenuator button from mold. Use water and
mild soap on the mold only. Dry mold before replacing
button.
Reasons to replace the molds
and/or attenuators
Discoloration,shrinkage,cracking,hardening of the
earmold material,or deterioration in performance.
General Information
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Most attenuator buttons have the number 9,15 or 25
stamped on the button. Some have either a black or
a white sealing ring,others are plain, depending on
the style,color,attenuation characteristics and the
manufacturing process. These identifiers and bands
do not affect the performance of the attenuators.
Each attenuator is carefully constructed and measured
to assure uniform acoustic properties.
Solid Plugs
Some inserts are solid; some have a diaphragm sealed
with epoxy. The average attenuation of Etymotic’s
sealed button is 30 dB, measured at E-A-RCAL
Laboratories by the ANSI Real-Ear-Attenuation-atThreshold method. Note:When the sound channel
of the earmold is plugged,the total attenuation is
dependent on the insert plus the earmold seal.
Identifying the Attenuators
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Musicians practice and perform
in a variety of different settings
and they are exposed to high
levels of sound,sometimes
for long periods. They require
different amounts of protection,
depending on the sound levels
they encounter during rehearsal
and performance.
Buttons are interchangeable.
Some musicians use one type
of attenuator in one ear and
another type in the other,
depending on the source and
location of sound.
Recommended Earplugs
Small strings
Large strings
Woodwinds
Brass
Flutes
Percussion
Vocalists
Acoustic guitar
Amplified instruments
Marching bands
Music teachers
Recording engineers
Sound crews
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Own instrument, other strings
Brass
Brass,percussion
Own instrument, other brass
Percussion
Own instruments, other percussion
Own voice,speakers, monitors
Drums, speakers, monitors
Speakers, monitors
Multiple sources
Multiple sources
Speakers, monitors
Speakers, monitors
Harmful sound comes from:
E
R
-9
ER
-15
E
R
-25
ER
-20
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Musicians Earplugs are flat-response attenuators that
lower sounds evenly at all frequencies. Sound heard
with these earplugs has the same quality as the
original,just quieter.
Musicians Earplugs Defined
Frequency in Hz
125 250 500 1000 2000 4000 8000
0
10
20
30
40
50
Sound Reduction in dB
ER-25
ER-15
ER-9
EARPLUG ATTENUATION (Sound Reduction)
Mean Attn.
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ER-20 High Fidelity earplugs are
ready-fit earplugs that preserve
sound quality while reducing sound
levels approximately 20 dB at all
frequencies.ER-20s reduce harmful
sound without distorting speech and music.
ER-6 Isolator earphones™are
used with personal players such
as CD, DVD, MP3 and computers.
ER-6 earphones have the best
sound quality and highest sound
isolation of all earphones and earbuds
in their class.ER-6 earphones
plug directly into your
Musicians Earplugs with
a special adapter.
Other Products
ER6-15
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Styles & Colors
ETYMOTIC RESEARCH, INC.
www.etymotic.com
©2003 Etymotic Research,Inc.
standard partially
countersunk
countersunk
Attenuator attaches
to a custom earmold
clear beige brown red blue
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