ISOtunes IT-40 Sport DEFY Slim Basic Tactical Earmuffs Instruction Manual
- June 12, 2024
- ISOtunes
Table of Contents
ISOtunes IT-40 Sport DEFY Slim Basic Tactical Earmuffs
Product Information: DEFYTM SLIM BASIC TACTICAL HEARING PROTECTOR
The DEFYTM SLIM BASIC is a tactical hearing protector that incorporates
Tactical Sound ControlTM (TSC) technology. This product allows the user to
hear the surrounding environment while maintaining a safe listening level. It
features a Power/Tactical Sound ControlTM Dial, Tactical Sound ControlTM Mic,
Battery DoorCover, and Line Input option.
Location of Controls
- Power/Tactical Sound ControlTM Dial
- Tactical Sound ControlTM Mic
- Battery Door Cover
- Line Input
Power On/Off
To power on the DEFYTM SLIM BASIC:
- Turn the Power/Tactical Sound ControlTM Dial (1) up until you hear and feel a physical click.
To power off the DEFYTM SLIM BASIC
- Turn the Power/Tactical Sound ControlTM Dial (1) all the way down until you hear and feel a physical click.
Tactical Sound ControlTM Technology
The DEFYTM SLIM BASIC is equipped with TSC (Tactical Sound ControlTM)
Technology. This microphone technology allows the user to hear the surrounding
world at a safe listening level. When ambient noise exceeds the safe listening
level, the microphone technology immediately attenuates the sound to a safe
level.
Music & Volume
The DEFYTM SLIM BASIC provides an option for playing music through the
device. Adjusting the TSC volume is easy:
- Turn the Power/Tactical Sound ControlTM Dial to adjust the volume level.
Line Input Option
The DEFYTM SLIM BASIC has a line input option to connect external audio
sources. Use the Line Input to connect your device to the hearing protector.
Battery
The DEFYTM SLIM BASIC operates on batteries. To replace the battery:
- Open the Battery Door Cover (3).
- Replace the battery with a new one.
- Close the Battery Door Cover securely.
Legalities
Refer to the user manual for legal information and guidelines regarding the
use of the DEFYTM SLIM BASIC.
Location of Controls
- Power/Tactical Sound Control™ Dial
- Tactical Sound Control™ Mic
- Battery Door Cover
- Line Input
Power On/Off
Power On: Turn the Power/Tactical Sound Control™ Dial (1) up (you will hear
and feel a physical click)
Power Off: Turn the Power/Tactical Sound Control™ Dial (1) all the way down
(you will hear and feel a physical click)
Tactical Sound Control™ Technology
This product includes TSC (Tactical Sound Control™) Technology. This is a microphone technology that allows the user to hear the world around them, but always at a safe listening level. When ambient noise breaches a safe listening level, the microphone technology immediately responds and attenuates to a safe level. Adjusting the TSC volume is easy. Turn the Power/Tactical Sound Control™ Dial (1) up or down
Music & Volume
Volume: Use the controls on your phone or personal media device to control the
volume
Line Input Option
To listen to music via the Line Input (7), use the 3.5mm audio cable included.
Insert one end into the DEFY Slim Basic and insert the other end into your
phone or other personal media device. Phone calls will not work with DEFY Slim
Basic products.
Battery
The DEFY Slim Basic operates using two standard AAA batteries. Slide the black ISOtunes Sport cover up to open and access the batteries. If you experience any issues, try removing the batteries and inserting new ones.
Fitting
ANSI S3.19-1974 Table (NRR Table)
EN 352-2:2002 Table (SNR Table)
Models IT-40
Important
Please read, understand, and follow all safety information.
Fitting
- Pull the earcups apart (Fig. 1)
- Check for R and L indicators (Fig. 2)
- Place the product on your head with the corresponding R and L sides (Fig. 3)
- Adjust the earcup position by extending the headband to ensure a good fit around the ears
Introduction
Thank you for purchasing ISOtunes® Sport DEFY Slim Basic 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.
Powering On/Off
To power on, turn the Power/Tactical Sound Control™ Dial-up (you will hear and
feel a physical click). To power off, turn the Power/Tactical Sound Control
Dial all the way down (you will hear and feel a physical click).
Powering
The DEFY Slim Basic operates using two standard AAA batteries (included). If
you experience any issues, try removing the batteries and inserting new ones.
Noise Attenuation
This product has been tested to the European Safety Standard EN352-1:2002 and
the ANSI S3.19-1974 standard for a hearing protector, with a Single Number
Rating (SNR) of 27 dB and a Noise Reduction Rating (NRR) of 21 dB. Full
testing details are available in the Noise Attenuation section of this
booklet.
ANSI S3.19-1974
The level of noise entering a person’s ear, when ISOtunes® Sport DEFY Slim
Basic 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:
The surrounding noise level measured at the ear is 100 dB.
- The NRR of ISOtunes® Sport DEFY Slim Basic is 21 dB.
- The noise level entering the ear is approximately equal to 79 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 gunfire.
EN 352
- 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)
SafeMax™ Technology
ISOtunes® Sport DEFY Slim Basic incorporates SafeMax™ Technology, therefore
its volume output has been limited to 85 decibels. ISOtunes® Sports devices
with SafeMax™ Technology are OSHA, and ANSI compliant.
Tactical Sound Control™ Technology
This product includes TSC – Tactical Sound Control Technology™. This is a
microphone technology that allows the user to hear the world around them, but
always at a safe listening level. When ambient noise breaches a safe listening
level, the microphone technology immediately responds and attenuates to a safe
level. This feature automatically turns on when the product turns on.
Adjusting the TSC volume is easy: simply turn the large dial up or down.
Cleaning and Maintenance
- Clean your ISOtunes Sport DEFY Slim Basic by gently wiping them with a clean, damp cloth with mild soap.
- Do not immerse the hearing protector in water.
- Do not use abrasive cleaning solvents to clean the hearing protector.
- If the hearing protector gets wet from sweat or rain, please discontinue use and turn the earmuff outwards, and allow it to dry.
- The ear cushions and foam liners should be regularly inspected for deterioration, cracking, or other damage.
WARNINGS
ISOtunes® Sport DEFY Slim Basic does an excellent job of blocking outside
noise. As such, ISOtunes® Sport DEFY Slim Basic 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® Sport DEFY Slim
Basic is used ONLY in safe environments.
Additional Notes
ISOtunes® Sport DEFY Slim Basic is compliant with Bluetooth® V5. We do not
guarantee compatibility of all functions on every Bluetooth®-enabled device.
Please check your device’s user manual for compatibility and functionality.
For additional information or questions about ISOtunes® Sport products or
spares and accessories, please contact our support team.
North America
[email protected]
1-844-396-3737
Monday-Friday 9-5 ET
UK & Europe
[email protected]
The full text of the declaration of conformity is available at:
www.ISOtunes.co.uk/EUdeclaration-of-conformity.