NuForce Earphones User manual

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NuForce
Earphones User's Guide
382 South Abbott·Ave, Milpitas, CA 95035, USA·
www.nuforce.com • EMAIL: [email protected]

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IMPORTANT: LISTENING
AT
HIGH
VOLUME
LEVELS
CAN
CAUSE
PERMANENT
DAMAGE
TO
YOUR
HEARING.
BEFORE
USE,
READ
ALL
WARNINGS
AND
INSTRUCTIONS.
To
avoid hearing damage, do
not
prolong listening
at
high volume levels. Follow guidelines established
by
the U.S. Occupational Safety Health
Administration (OSHA) for
maximum
time
exposure at various sound pressure levels. Ignoring
these guidelines can result in permanent hearing loss.
The
following table
may
prove helpful.
• 90 dB SPL for 8 hours
• 95 dB SPL for 4 hours
• 1
00
dB SPL for 2 hours
• 105 dB SPL for 1
hour
• 110 dB SPL for 1/2
hour
• 115 dB SPL for
15
minutes
• 120 dB SPL to be avoided altogether.
382 South Abbott Ave, Milpitas, CA 95035, USA •
www.nuforce.com • EMAIL: [email protected]

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A Beginner's Guide to Good Audio
What qualities distinguish a good audio system?
Let's
start with a misconception. "Wow!
I'll
bet that
can play loud!" This, or something like it, is typical
of
the newcomer's reaction to an audiophile's setup,
particularly
if
the speakers are large.
Why a system's loudness capability should be the
measure
of
excellence
isn't
difficult to understand.
People install often quite costly sound systems in
their cars. Some
of
the larger specimens seem
capable
of
shaking their host vehicle apart. The
pavement trembles when one passes by. A club's
sound system is in the same league: ear-splitting,
gut-wrenching, floor-buckling output. With the
exception
of
classical music, which is rarely ever
amplified, the same is true for most live concerts.
Domestically, the average boom box can break a
382 South Abbott Ave, Milpitas,
CA
95035,
USA·
www.nuforce.com • EMAIL: [email protected]

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lease. TV ads featuring hard-pumping woofer cones
say it all.
On actually sitting down and listening to our
hypothetical audiophile's sound system, the
newcomer will likely say "Wow!" again, followed
this time by
"It's
so clear!"
Clarity. The term takes in a host
of
qualities. As
strange as this may seem, one
of
clarity's principal
components is silence. A silent audio system -an
audio system that contributes little to no noise
of
its
own -reveals the music all the more clearly at
listening levels from soft to loud.
Resolution likewise contributes to clarity. Imagine
two mounds
of
sand in bright sunlight. One mound
is mixed with mud.
It's
difficult to see its individual
grains. The other mound is free
of
mud. You have
no trouble seeing its tiny, glittering bits. And so
it
is
with high-quality audio. The music shines through.
382 South Abbott Ave, Milpitas,
CA
95035, USA •
www.nuforce.com • EMAIL: [email protected]

nuForce:
Nothing muddies the sonic image. You hear the
texture
of
a singer's voice almost as
if
she's in the
room. Instrumental timbres allow you to distinguish
the purposeful grunge
of
the rockers' guitars. Violas
differ from violins, likewise oboes from English
horns. A good sound system allows you to make
these listening distinctions.
Soundstage. Another critically important measure
of
an audio system's quality is its ability to project a
convincing soundstage. Can you perceive its width
and depth? Is it realistically proportioned? Can you
hear the venue as large
or
small? Is it clear to you
where the musicians perform within the soundstage?
Depending on the style
of
recording, our
audiophile's sound system provides the answers.
And
of
course the pleasures.
Speed. An audio system's superior speed produces
crisp, clean attacks: a violin
or
trumpet's edge, a
382 South Abbott Ave, Milpitas,
CA
95035, USA •
www.nuforce.com
·EMAIL:
[email protected]

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drummer's rim shot, a marimba's wooden loveliness
-all those little delights that mimic live music.
Bass. To return to trembling pavements and hard-
pumping woofer cones, the audiophile's guest will
be pleasantly surprised to discover that a high-
quality sound system's low end is as tuneful and
clean as the rest
of
the audio spectrum. Again, no
mud. Just lovely, well-defined sounds. A good audio
system aims at naturalness.
Size. Good audio is not necessarily big audio.
If
you
shop wisely, you need not spend a fortune to achieve
a high level
of
audio performance. With these
pointers as a guide, the newcomer has a good idea
of
what to listen for. The least expensive NuForce
components will more than satisfy modest
applications. With our reference-grade components
serving as the culmination
of
all our efforts, our
entire line answers to the same ideal: accurate,
vibrant, lifelike sound.
382 South Abbott Ave, Milpitas, CA 95035, USA •
www.nuforce.com • EMAIL: [email protected]

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PREPARING
FOR
USE
We recommend that you do not exceed 50%
of
the
maximum volume on your audio playing device and
that you limit your use to one hour per day.
Always
tum
music volume down on your listening
device before inserting any earphones into your ears.
Once inserted, gradually increase the volume to a
moderate listening level. Refer to above for SPL
chart to prevent damage to your hearing.
Using any earphones at high volumes (greater than
85 dB (A)) or for extended periods
of
time (more
than a one hour period per day) can permanently
damage your ears.
Clean your eartips as often as possible to avoid
infections with antiseptics but do not soak it or else
earphones can be damage.
382 South Abbott Ave, Milpitas,
CA
95035, USA •
www.nuforce.com • EMAIL: [email protected]

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SHOULD ANY OF THESE SYMPTOMS OCCUR,
STOP USING
YOUR
EARPHONES AND
CONSULT A MEDICAL DOCTOR.
• Ringing
or
buzzing in the ears
• Difficulty in hearing speech
• Muffling
of
sounds
• Abnormal build up
of
earwax
382 South Abbott Ave, Milpitas,
CA
95035, USA •
www.nuforce.com • EMAIL: [email protected]

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INSERTING YOUR EARPHONES
Quality
of
the frequency response and sound
isolation depends on how well you insert your
earphones into your
ear
canal.
If
you feel there is a lack
of
bass, try experimenting
with different ear-tips (comes in several different
sizes) to obtain better seal and sound isolation
Insert your earphones(images shown below are for
illustration only) using the following guidelines:
382 South Abbott Ave, Milpitas,
CA
95035, USA •
www.nuforce.com • EMAIL: [email protected]

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LEFT
RIGHT
382 South Abbott Ave, Milpitas, CA 95035, USA ·
www.nuforce.com ·EMAIL: [email protected]