Jays ONE User manual

User manual

English

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CONTENTS ONE TWO THREE
1. a-JAYS Earphones •••
2. Silicone sleeves •••
3. Airline adapter • •
4. Stereo splitter • •
5. Travel case •
About a-JAYS
Thank you for choosing a JAYS product. JAYS represents high
quality and a true sound reproduction. The a-JAYS earphones
feature a newly-developed 8.6mm driver designed to enhance
your music’s rhythmic section without compromising any of the
detail in other frequencies. Furthermore the a-JAYS feature a
new at, tangle-free cable to make listening experience easier
still. Just enjoy!
We strongly recommend you read this manual carefully
before use. Further information about service and support
can be found at: www.jays.se.

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SPECIFICATIONS ONE TWO THREE Driver 8,6 mm Dynamic Speaker 8,6 mm Dynamic Speaker 8,6 mm Dynamic Speaker Isolation JAYS Sound Isolating System JAYS Sound Isolating System JAYS Sound Isolating System Sensitivity 95dB SPL @ 1kHz 96dB SPL @ 1kHz 97dB SPL @ 1kHz Impedance 16 Ohm 16 Ohm 16 Ohm Frequency response 20 - 18 000 Hz 20 - 20 000 Hz 20 - 22 000 Hz Cord length 115 cm (45 in) 115 cm (45 in) 115 cm (45 in) Weight 14 grams (0,49 oz) 14 grams (0,49 oz) 14 grams (0,49 oz) Plug Gold-Plated 3.5 mm Gold-Plated 3.5 mm Gold-Plated 3.5 mm

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Understanding the product specication
Sound Pressure, Decibel and Hz
Sound is an invisible vibration composed of frequencies which
travel in undulations known as sound waves. The amplitude
of vibration produced by an object such as a speaker driver
is proportional to the change of pressure generated as the
wave moves through the medium which surrounds it (such as
air). Therefore, the amplitude of a sound wave is commonly
measured by its pressure level.
The decibel is a non-dimensional, logarithmic scale to denote
a relative change in the strength of a signal or wave. When
placed in the context of sound pressure level; it measures the
nominal threshold of human hearing, relative to the quietest
sound audible to the human ear.
The frequency of instances where a sound wave reaches its
peak during a period of time is measured in Hz (hertz). This is
the number of complete cycles per second. Human hearing is
limited to frequencies between about 20 Hz and 20,000 Hz.
Sensitivity and impedance
Earphone sensitivity is measured in Sound Pressure Level
(SPL). This is essentially a measurement of how loud or easily-
driven a pair of earphones is.
The sensitivity is also inuenced by the drivers’ coil impedance
which varies over the frequency range. The higher the SPL
and the lower the impedance the more easily driven your
earphones will be.

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Precautions
Do not use the product in other ways than are described•
in this manual.
Handle with care at all times and protect from external•
damage.
Do not expose to heat, magnetism or cold, damp•
environments.
To clean: use a mild, antiseptic detergent.•
Do not expose the cables and plugs to abnormal wear•
and tear, e.g. by bending or pulling them.
Avoid winding the cable too tightly.•
Avoid dropping or strong impact. Always leave the sleeve•
on for shock protection.
Proper use
The a-JAYS earphone model is suitable for many different areas
of use. It is particularly suited to environments where you are
likely to be disturbed by ambient noise, e.g. at airplanes, on
trains, on the subway, at the gym or when you are studying. In
short, whenever you want. Let nothing come between you and
the full enjoyment of your music.
Inserting and removing the earphones
Turn the volume to minimum before insertion.•
For best results, moisten the sleeves before insertion.•
Holding the earphone at the rear, carefully insert the•
sleeve while pulling up and out on the back of the ear.
The earphone should seal deeply and comfortably in
the ear canal.
If the bass frequency response seems too feeble or if•

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external noise has not been eliminated, try inserting the
earphone deeper into the ear canal to obtain a better
seal or try a different sleeve size.
After use, remove carefully - avoid pulling the cable.•
Cleaning
Clean your earphones regularly using an antiseptic cloth or
wipe. Keep sleeves free of wax and other build-up. Wax and
dirt can adversely affect sound quality and can damage your
earphones. Furthermore, ensure that no moisture penetrates
the nozzle when cleaning as this may damage the delicate
dynamic speakers inside the earphones.
Changing the sleeves
The sleeves can be removed by carefully sliding them off the
earphones. When replacing, check that the sleeves’ rubber
notches are securely fastened in the locking groove.
Cleaning the mesh lter of the sound tube
If the mesh lter on the front of the sound tube shows signs of
clogging, carefully use a needle to clean it.

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Storing your a-JAYS earphones
Always store your a-JAYS earphones in a dust- and damp-free
environment. When traveling please use the JAYS travel case to
protect your earphones. See the following steps for guidance
on how to correctly place your earphones inside the travel
case. (The travel case only comes with a-JAYS Three version.)
For your safety
Hearing
These earphones are very powerful. Listening at high volumes
for prolonged periods can cause permanent hearing damage.
Always listen at a low to moderate volume and remember
to rest your ears once in a while. If your ears start ringing or
aching, remove the earphones immediately in order to rest your
ears. Occupational Safety Health Administration (OSHA) has
developed below noise exposure graph.