EN
Noise Attenuation
APPROVAL: ISOtunes
PRO is tested and approved in accordance with ANSI S3.19-
®
1974 Specifi cations.
Frequency, Hz
125
250
Grand Mean Attenuation, dB
24.0
25.9
Standard Deviation, dB
4.1
3.5
The level of noise entering a person's ear, when ISOtunes
are worn as directed, is closely approximated by the difference between the
A-weighted environmental noise level and the Noise Reduction Rating (NRR).
Improper fi t of this device will reduce its effectiveness in attenuating noise. Consult
the enclosed instructions for proper fi tting.
Example:
1. The surrounding noise level measured at the ear is 97 dB.
2. The NRR of ISOtunes
PRO is 27 dB.
®
3. The noise level entering the ear is approximately equal to 70 dB.
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 gunfi re.
Guarantee
There is a one year guarantee against defects in material and workmanship. The
guarantee does not cover damage by misuse, abuse or unauthorized modifi cations.
500
1000
2000
3150
4000
6300
8000
32.5
36.2
35.9
39.2
40.8
45.5
45.3
3.6
3.5
2.3
3.4
3.0
4.0
4.0
PRO headphones
®
Maintenance
: : Clean your TRILOGY
Use water only. Do not clean tips with alcohol-based cleaning solutions. Let tips dry
completely before next use. To ensure peak performance, we recommend replacing
TRILOGY
Foam Tips every three months or when they become soiled.
™
NRR
: : Replacement eartips can be purchased directly from ISOtunesAudio.com
27
: : Do not use abrasive cleaning solvents to clean the headset.
: : Avoid scratching the headset with sharp objects, as this may cause damage.
: : Keep the headset away from high temperature areas, humidity, and dust.
WARNING:
ISOtunes
®
PRO does an excellent job of blocking outside noise. As such, ISOtunes
PRO should NOT be used in environments where users need to be fully aware of their
surroundings for personal safety reasons. For example, do NOT use them while driving
a car or riding a motorcycle. Similarly, do NOT use them when riding a bicycle outside.
The user is solely responsible for ensuring that ISOtunes
environments.
Additional Notes
: : ISOtunes
PRO is compliant with Bluetooth
®
compatibility of all functions on every Bluetooth
device's user manual for compatibility and functionality.
: : For questions about ISOtunes
info@ISOtunesAudio.com
™
Foam Tips by gently wiping them with a clean, damp cloth.
PRO is used ONLY in safe
®
®
V4.1. We do not guarantee
®
-enabled device. Please check your
®
products, please email
EN
®