Legalities - ISOtunes SPORT Manual Del Usuario

Fitting
ANSI S3.19-1974 Table (NRR Table)
A1: Frequency, Hz 125 250
A2:
Grand Mean Attenuation, dB 19.9 22.3
A3: Standard Deviation, dB 3.7 2.9
EN 352-1:2002 Table (SNR Table)
B1: Frequency (Hz) 125 250 500
B2: Mf (dB) 17.5 21.4 26.6
B3: sf (dB) 4.5 2.5 2.6
B4: APVf 13.0 18.9 24.0
B5: SNR=30dB H=34dB M=27dB
Important
Please read, understand, and follow all safety information.
Full manual can be found at ISOtunes.com/DEFYManual
Fitting
1. Remove white foam inserts from each earcup
2. Pull the earcups apart
3. Place the product on your head
4. Adjust the earcup position by extending the headband to ensure a
good fit around the ears
500 1000 2000 3150 4000 6300 8000
27.8 30.8 38.8 44.3 50.0 46.3 42.4
2.4 2.3 3.8 3.9 3.8 3.1 4.3
1000 2000 4000 8000
29.3 37.6 46.4 39.6
2.3 3.7 4.6 6.8
27.0 33.9 41.8 32.8
L=21dB APVf=MF-SF (dB)
Introduction
Thank you for purchasing ISOtunes® Sport DEFY Professional Noise
Isolating Earmuffs. These earmuffs 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 EN352-1:2002 and the ANSI & NIOSH
standards for a hearing protector, with a Single Number Rating (SNR)
of 30 dB with a Noise Reduction Rating (NRR) of 25 dB. Full testing
details are available in the Noise Attenuation section of this booklet.
Noise Attenuation APPROVAL
NRR
ISOtunes® Sport DEFY is tested and approved in accordance with
25
ANSI S3.19-1974 Specifications and the European Safety Standard
EN 352-1:2002.
ANSI
S3.19-1974
The level of noise entering a person's ear, when ISOtunes® Sport
DEFY 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® Sport DEFY is 25 dB.
3. The noise level entering the ear is approximately equal to 75dB.
Please note that the NRR is based on the attenuation of continuous
noise and may not be an accurate indicator of the protection attain-
able against impulsive noise, such as gunfire.
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