Download ER-20 High-Fidelity Earplugs

Package Includes
Aircraft
1 pair of ER-20 High-Fidelity earplugs
Carrying case
Instructions
Athletics
E T Y M O T I C
crew
flight instructors
passengers
pilots
athletes
coaches
sporting events
Construction
carpenters
equipment operators
road builders
steel workers
All earplugs reduce sound 20 dB
Emergency
Vehicles
EMTs
highway patrol
firefighters
Solid
Beige
Effective
Industrial
Translucent
Beige
factory workers
shop teachers
students
supervisors
Leisure
concerts
night clubs
noisy restaurants
Translucent
Purple
Medical-Dental
Clear
dentists
dental hygienists
dental technicians
surgeons
Motor Sports
Translucent
Red
motorcyclists
pit crews
race car drivers
spectators
Translucent
Blue
Neck Cords (optional)
for
• Sound quality is preserved
• Sound reduction: 20 dB
• Speech is clear,
not muffled
• Replicates the
ear’s natural
response
• Ready-fit
anyone
who
needs
to hear
accurately
in noise.
Music
concerts
marching bands
musicians
night clubs
rp
lu
g
Color Options
R E S E A R C H ,
Others
delivery drivers
market traders
night club staff
truck drivers
Yellow
o
No t Y
Purple
Blue
Black
Red
ETYMOTIC RESEARCH INC.
61 Martin Lane • Elk Grove Village, IL 60007
www.etymotic.com • 1-888-ETYMOTIC
Musicians Earplugs™ is a trademark of Etymotic Research, Inc.
The ER family of earplugs is covered by one or more of the following U.S. patents: #4,852,683, #5,113,967,
#5,887,070 and other patents pending.
ER20-20k-03/04
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How Much Protection Do You Need?
fidelity
Hearing loss is a function of exposure time, the average sound level, and the
peak level of very loud sounds. Exposure to excessive noise can cause hearing
loss, depending on the intensity and duration of the noise. Some persons
are more susceptible to hearing loss from high-level sound than others.
The majority of eight-hour equivalent noise exposures fall between 85 and
95 dB. Many musicians and industrial workers can be adequately protected
with as little as 10 dB of sound reduction. ER-20s provide 20 dB of sound
reduction, other earplugs provide too much sound reduction for many
environments.
What Makes the ER-20s High Fidelity?
ER-20 High-Fidelity earplugs use patented
technology that replicates the natural
response of the ear canal so that sound
heard with these earplugs is as clear as
the original, just quieter. ER-20 earplugs have virtually the same fidelity
as Musicians Earplugs™ (custom earplugs worn by professionals) and are
a low-cost alternative. For more information about Musicians Earplugs,
consult a hearing professional or visit www.etymotic.com.
Recommended Maximum Weekly Exposure (NIOSH, 1998)
Sound level (dB)
Exposure type
No protection
60
Conversation
SAFE
—
Noisy restaurant / Vacuum cleaner / Average factory
40 hrs
SAFE
88
Circular saw / Loud party / Motorcycle
20 hrs
SAFE
94
Subway / Riding mower
5 hrs
SAFE
97
Live band
2.5 hrs
40 HRS
100
Sporting event / Chain saw / Snowmobile
1.25 hrs
20 hrs
112
Blues bar / Rock concert
5 mins
1.25 hrs
36 mins
80-85
Earplug Sound Reduction
10
20
ER-20 High-fidelity earplugs
FOAM E-A-R PLUGS
(shallow insertion)
Ambulance siren
2.5 mins
140
Jet engine / Gun shot / Firecracker
INSTANT LOSS
Above 125 dB you are at risk for any period without maximum protection
30
40
115
FOAM E-A-R PLUGS
(deep insertion)
Allowable Weekly Sound Exposure To Be Safe
50
125
250
500
1000
2000
4000
MARCHING BAND
8000
130
Frequency (Hz)
The above graph shows that ER-20s provide almost equal sound reduction (20 dB)
across the range of hearing. Foam earplugs reduce the high frequencies, resulting
in muffled speech and music.
fidelity/fidélitee/ n.
1. faithfulness; loyalty. 2. strict
conformity to truth or fact. 3. exact
correspondence to the original.
4. precision in reproduction of sound.
Noise Reduction Rating (NRR)
The Environmental Protection Agency requires
manufacturers to print a noise reduction rating (NRR)
on all non-custom earplugs. NRR is computed from
laboratory data that are not representative of the
values attained in the real world by actual users.
The NRR for ER-20 High-fidelity earplugs is 12 dB,
but actual clinical measurements of properly inserted
ER-20 earplugs indicate that these earplugs provide
almost equal sound reduction (20 dB) at all frequencies.
LOUD BAR
WITH BAND
120
dB(A) Levels
Real-Ear Attenuation in dB
0
Using ER-20s
110
100
DRUMLINE
REHEARSAL
Risky
for
any
period
OLD
CHAIN SAW
CHICAGO
BLUES BAR
MAJOR
SPORTING
EVENT
PARTY
WITH BAND
90
80
40 20 10
5
HOURS
3
1
38 19
9
5
MINUTES
2
1
35 18
9
4
SECONDS
2
1