SportEar custom edge Guida
IN-EAR Sound Enhancement & Hearing
Protection Manual & Warranty
1
!!! Important Performance & Safety Tips
for Your New Custom Edge
Congratulations on the purchase of your new Custom Edge personal
sound amplification devices. Whether you are using this for general sound
enhancement, hearing protection or both, Custom Edge offers you the
best product for fit, performance and reliability.
In order to ensure you recieve the best performance from your new
Custom Edge devices, please thoroughly read the enclosed manual.
Hearing loss can happen gradually or quickly, depending on the levels
of noise(s) exposed to your ears. Once hearing loss occurs, it does not
reverse its course, THE DAMAGE IS DONE. Many who suffer hearing loss
wish they had a better understanding of this process sooner rather than
later in life. Take action now and protect your ears from further damage.
ALWAYS make sure you use the product as intended for best results.
ALWAYS use your new Custom Edge devices when in damaging loud
environments.
Make sure your product is working properly before use in extreme
environments, so you get the performance and protection your ears need.
See the following charts on “How the Ear Works” and The Decibel (dB)
Rating Chart
2
How the Ear Works
1. Acoustic design of the outer ear captures the oncoming sound
waves.
2. Sound waves enter the ear canal and penetrate the eardrum
(tympanic membrane).
3. The eardrum taps the malleus causing a chain reaction with the
stapes and the incus.
4. The incus taps the cochlea, causing a hydraulic effect on
35,000-40,000 hair-like nerves (cilia) in the cochlea.
5. As the cilia are pushed, they send a signal through the auditory
nerve to the brain.
6. The brain registers the incoming signal as a specific sound.
3
Ear Canal Eardrum
Eustachian Tube
Auditory Nerve
Semi-circular Canals
Ossicles
Cochlea
Brain
123 4 5 6
4
How the Ear Gets Damaged
1. As the nerves continually bend over from oncoming sound, they
eventually begin to wear out or even break off (especially from
damaging loud sounds).
2. Therefore, they do not respond as sensitively as they used
to and your ability to hear continues to diminish over time.
Extreme loud noises can damage your hearing instantly and
permanently.
5
Damaged
Worn Out
Healthy
6
How to Help the Ear Hear Better
A traditional piano has 88 strings that allow you to create many
beautiful sounds for your enjoyment. A traditional guitar only has
six strings. Your ear has 35,000-40,000 “strings on a piano”. This is
the most advanced sound system on the planet. But just as
strings on a piano, they can be easily damaged if you are not
careful. Once damaged, they cannot be restored to normal. If
your ears have been damaged and you need to hear better, then
modern technology offers digital hearing enhancement. This
allows you to have personal hearing device(s) tuned to match the
deficiency in your hearing. If you are missing more high tones in
your hearing, then you can have your devices programmed to
enhance those sounds only. Therefore, your hearing device(s) will
give the added stimulation to those damaged nerves (cilia)
without affecting the other sounds. This will help you hear things
again more clearly. Please see the entire SportEAR product
line and call one of our SportEAR product specialists to help
determine any additional needs.
7
Longer, thicker
nerves produce
low sounds,
very durable
Medium length
and thickness
produce mid
sounds, moderately
durable
Shorter, finer
nerves produce
high sounds,
very delicate,
most easily
damaged
PIANO
8
OSHA Hearing Chart shows hearing damage and loss occur when
exposed to sounds at 85 dB or louder for an 8 hour or greater
period of time.
Threshold of pain occurs for most people around 125 dB.
Whisper
General Household
Electronics
Industrial Environments
Music Concerts
Power Tools
Firearm(s) Shooting
The Decibal Rating Chart
SOUND NOISE LEVEL (dB)
30
70-90
85-140
110-140
110-140
110-185
EFFECT
Very Quiet
Moderate to Loud
& Invasive
For any noise over 85 db
see OSHA note below
See OSHA & Threshold of
pain notes below
Extreme Hearing Damage
Indice
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