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Fitting
FIG 1
ANSI S3.19-1974 Table (NRR Table)
Frequency, Hz
125
250
Grand Mean Attenuation, dB
16.0
18.8
Standard Deviation, dB
2.4
1.9
Bluetooth® Input
Requirement:
Result
The maximum sound pressure level
73.9 dB(A) at -10 dBFS
Important
Please read, understand, and follow
all safety information.
Full manual can be found at
ISOtunes.com/manuals
Fitting
1. Pull the earcups apart
2. Place the product on your head
3. Adjust the earcup position by extending the headband to
ensure a good fit around the ears
FIG 2
FIG 3
500
1000 2000
3150 4000 6300 8000
26.1
32.5
35.3
39.6
43.0
41.6
40.6
2.3
2.2
2.5
3.6
4.0
4.5
3.8
Introduction
Thank you for purchasing ISOtunes® LANDSCAPER 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.
Noise Attenuation APPROVAL
This product has been tested to the European Safety Standard
EN 352-1:2020 and the ANSI S3.19-1974 standard for a hearing
protector, with a Single Number Rating (SNR) of 30 dB and a Noise
Reduction Rating (NRR) of 24 dB. Full testing details are available in
the Noise Attenuation section of this booklet.
NRR
ANSI S3.19-1974
24
The level of noise entering a person's ear, when ISOtunes®
LANDSCAPER 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® LANDSCAPER is 24 dB.
3. The noise level entering the ear is approximately equal to 76dB.
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.
SafeMax™ Technology
ISOtunes® LANDSCAPER incorporates SafeMax™ Technology,
therefore its volume output has been limited to 85 decibels (IT-33).
ISOtunes® devices with SafeMax™ Technology are OSHA, and ANSI
EN | 10
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