ISOtunes XTRA 2.0 Manual Del Usuario página 3

Important
Please read, understand, and follow all safety
information.
Fitting
ISOtunes® XTRA EN352 comes with 4 sets of
TRILOGY™ foam eartips (XS,S,M,L) and 3 sets
of silicone eartips (S,M,L). Choose the size that
fits most snugly in your ear canal. Remember, the
snugger the fit, the better the noise blocking. The
silicone eartips are intended for use when NOT in
noisy situations.
ISOtunes® TRILOGY™ foam eartips have a
threaded core and the sound port on the earbud
is also threaded.
1. Twist the foam eartip counterclockwise to
remove and clockwise to place on a new foam
eartip.
2. Carefully compress the foam eartip on the stem/
sound port.
3. Insert the foam/eartip into your ear as deeply as
is comfortable and hold for 5 seconds while the
foam expands.
4. Repeat with second eartip.
Hint: To open your ear canal wider, lift the top of
your ear up and away from your head, as shown
in FIG1.
Introduction
Thank you for purchasing ISOtunes® XTRA 2.0
Professional Noise Isolating headphones. These
headphones have been specifically designed
for use in noisy environments – allowing you to
block out much of the surrounding noise so that
you can listen to your music or talk on the phone
with less interruption. This product has been
tested and meets the European Safety Standard
EN352-2:2002 and the ANSI & NIOSH standards for
a hearing protector, with a Single Number Rating
(SNR) of 36 dB and a Noise Reduction Rating (NRR)
of 27 dB. Full testing details are available in the
Noise Attenuation section of this booklet.
Noise Attenuation
APPROVAL: ISOtunes® XTRA 2.0 is tested and
approved in accordance with ANSI S3.19-1974
Specifications and the European Safety Standard
EN 352-2:2002.
ANSI
S3.19-1974
The level of noise entering a person's ear, when
ISOtunes® XTRA 2.0 headphones are worn as
directed, is closely approximated by the difference
between the A-weighted environmental noise level
and the Noise Reduction Rating (NRR). Improper
fit of this device will reduce its effectiveness
in attenuating noise. Consult the enclosed
instructions for proper fitting.
A1: Frequency (Hz)
A2: Mean Attenuation (dB)
A3: Standard Deviation (dB)
Example:
1. The surrounding noise level measured at the
ear is 100 dB.
2. The NRR of ISOtunes® XTRA 2.0 is 27 dB.
3. The noise level entering the ear is approximately
equal to 73dB.
Please note that the NRR is based on the
attenuation of continuous noise and may not be
an accurate indicator of the protection attainable
against impulsive noise, such as gunfire.
EN352
B1: Frequency (Hz)
B2: Mean Attenuation (dB)
B3: Standard Deviation (dB)
B4: Assumed Protection Value (APV) (dB)
B5:
H = Hearing protection estimation for high ]
frequency sounds (f ≥ 2000Hz)
M = Hearing protection estimation for medium
frequency sounds (500 Hz < f < 2000Hz)
L = Hearing protection estimation for low
frequency sounds (f ≤ 500Hz)
The EU declaration of conformity can be accessed
at www.isotunes.co.uk/EU-declaration-of-
conformity
The products will be certified to the Product
standard EN 352-2:2002 and the PPE Regulation
2016/425
SafeMax™ Technology
ISOtunes® XTRA 2.0 incorporates SafeMax™
Technology, therefore its volume output has
been limited to 85 decibels (IT-22 and IT-27)
and 79 decibels (IT-25). ISOtunes® devices with
EN
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