IASUS IA-NT4-BASIC-BT Stealth Bluetooth Throat Mic Headset Instruction Manual

IA-NT4-BASIC-BT Stealth Bluetooth Throat Mic Headset

STEALTH
Bluetooth throat mic headset
MODEL NUMBER: IA-NT4-BASIC-BT

Thank You for choosing the IASUS STEALTH Throat Microphone Headset System.
In this manual, you will find instructions to operate your STEALTH Throat Microphone Headset with Bluetooth-enabled devices. Should you have any questions and require
assistance with setup and usage, please feel free to visit our website,

ABOUT THIS MANUAL

We recommend reviewing this manual in its entirety before using this product to get the most out of it, for a richer user experience.

WARNINGS

Any changes or modifications to this unit not expressly approved by the part responsible for compliance could void the user’s authority to operate the equipment,
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions :

1. This device may not cause harmful interference
2. This device must accept any interference received, including interference that may cause undesired operation.

SPECIFICATIONS

SUPPORTED PROFILES

AVRCP 1.6| HSP 1.2
A2DP 1.3.1| SPP 1.2
HFP 1.7| BLE 5.0
STRAP
Adjustable & removable neck strap. Magnetic breakaway clasp.
BATTERY
PLAYBACK TIME| 9 HOURS
CALL TIME| 10 HOURS
STAND-BY TIME| 250 HOURS
CHARGING TIME| 90 MINUTES
CHARGING SPECS| 5V
BATTERY CAPACITY| 150mAh
ERGONOMY
Flexible silicone wing-blade design for a customized angle fit.
STANDARD
Ingress Protection Rating against dust and water. Silicone surrounding all essential ports restricts entry of dust and dirt.

PARTS & CONTROLS REFERENCE

1 ………. + Button
2 ………. – Button
3 ………. Primary Button
4 ………. Primary Button Ring with Regular Cap
5 ………. Magnetic Clasp Base
6 ………. Magnetic Clasp Top
7 ………. Acoustic Coil Module| 8 ………. 3.5mm (recessed/slim jack) Module
9 ………. Speaker 3.5mm slim connector
(sold separately)
10 ……. Wing
11 ……. Opaque Cap
12 ……. Elastic Wrap for Acoustic Coil
13 …… Charging Cable
---|---

ORIENTATION OF THE STEALTH DURING USAGE

When positioning the Stealth, the volume buttons on the wing should be facing downwards, while the primary button should be on the left side of the throat and the acoustic coil or 3.5mm module attachment should be on the right side.
The optimal position for a throat mic is about 1-1.5” to the side of the voice box where the Stealth is positioned. The throat mic wing shape was designed for aerodynamic applications so that there would not be pressure applied to the neck under high wind situations. Ergonomics are comfortable and intuitive to use.
NOTE: The transponders should rest comfortably on the neck and be in contact with your neck at all times. They should not be too tight. The adjustable straps have flex in order to maintain the Stealth in position. Dot, do not over-tighten the straps.

THROAT MIC OPTIMIZATION

For users with no prior experience with throat mics, please keep in mind the sound quality will never be as clear as a standard headset. This is because the audio is created from vibrations of the larynx through the body of the throat. Since air is not the medium, nasal sounds will be absent. The audio quality is similar to a person with a cold, hence the “muffled” sound that is commonly associated with throat mics. The Stealth benefits from a vast improvement in sound quality through our in-house advancement.
IMPORTANT: DO NOT WEAR THE THROAT MIC AND STRAP TOO TIGHT AROUND THE NECK.
When worn properly, the neck strap should rest on the back of the neck, and only very little pressure should be felt

BACKGROUND NOISE THROUGH MULTI_MIC MOBILE DEVICES

New smartphones on the market today have secondary mics, which are used in conjunction with the primary mic input for background noise cancellation.
When using a headset, the device uses the primary mic to compare to secondary mic inputs and processes accordingly. When the throat mic is not worn, the secondary mic provides slight voice inputs because no audio is picked up from the throat mic. However, once the throat mic is activated, the audio will perform back to normal.

CHARGING

The Stealth comes shipped from our facilities with the built-in Lithium-Ion battery already charged and ready for use. When charging is needed, connect the included USB cable to the micro-USB port covered by the Primary Button Ring.

To access the charging port, remove the Primary Button Ring by turning it counter-clockwise. A full charge takes about 90 minutes to complete and a red LED will remain lit until it is fully charged. Please note to charge with a computer USB port only.

Fast chargers (>500mA) may damage Stealth’s charging mechanism. To avoid damage to the battery, refrain from draining the battery completely and leaving it without charge for an extended amount of time.

INTERCHANGEABLE MODULES

The Stealth can operate with two modules for audio output :

• The accoustic coil module
• The 3.5mm recess/thin audio connector module.

To use the Stealth with helmet speakers or earbuds, please connect the 3.5mm recess/thin audio connector to the throat mic. Each module can be switched and replaced as follow:

To properly attach either module, it needs to be turned clockwise and tightened firmly until the IASUS logo is horizontal and right side up. This position ensures proper alignment with the electrical contacts. It should be tightened to the point where it will not turn anymore in order for the silicon ring to maintain a waterproof seal.
NOTE: When connecting helmet speakers or earbuds to the iASUS helmet speaker’s 3.5mm jack module, be sure to insert the plug all the way into the module until a click is felt to confirm a waterproof seal has been established.

ELASTIC WRAP FOR ACOUSTIC COIL

The neck strap has an elastic loop close to the neck to prevent it flailing around during use. Simply route the acoustic coil through the loop and adjust the position.

MAGNETIC BREAKAWAY CLASP

The Stealth neck strap is equipped with a magnetic breakaway clasp, designed for emergency situations when a rapid removal of the headset is required. This is done by pulling on either strap away from the other to disengage.
Under normal usage, always separate the top clasp from the base clasp with a twisting motion – the left hand pushing down and the right hand twisting up. Only a very light force is required. Disengaging the clasps any other way during normal everyday usage is unnecessary and not recommended.

PRIMARY BUTTON CAPS

Included with the Stealth are two interchangeable Primary Button Caps. The purpose of these two caps is to alter the visibility of the indicator LED. The regular cap allows the LED to shine through while the opaque cap blocks it. You may wish to swap in the appropriate cap depending on your use of the Stealth.

To switch caps, turn the Primary Button Ring counter-clockwise, replace the cap, and tighten the ring.

BLUETOOTH PAIRING

TURN PAIRING MODE ON
Press and Hold Primary Button for at least 3 seconds until LED flashes Red and Blue with an audible pairing tone.

PAIR DEVICE
Find “STEALTH” in the list of available devices in the Bluetooth menu of the device you are pairing.
The STEALTH uses standard Bluetooth 5.0 protocols.
When paired with newer devices, there is no need to enter a passcode. For older Bluetooth-equipped devices, enter the code “0000”
A list of supported protocols can be referenced in the Specifications section.

PAIRING A SECOND DEVICE

TURN PAIRING MODE ON
The IASUS STEALTH allows for pairing with two Bluetooth-enabled devices at the same time (smartphone, GPS, mp3 player, etc.)
To pair a second device, after STEALTH is paired with the first device, press and hold the Primary Button for at least 3 seconds to get into pairing mode.
PAIR SECOND DEVICE
Find “STEALTH” in the list of available devices in the Bluetooth menu in the device you are pairing.

RECONNECT FIRST DEVICE
Pairing the second device will disconnect STEALTH from the first device – this is normal. Go to your first device’s Bluetooth settings and manually reconnect to STEALTH.

CONTROLS

MUSIC MODE

PHONE MODE

Once paired for standard communication with a mobile device, the Primary Button is also used to answer/ end a phone call. The two buttons underneath the front wing blade are for volume and
When pressed once and released, a beep confirms the change in volume.
NOTE: Holding the + will power off the Stealth.

VOLUME LEVELS ON MUSIC MODE & PHONE MODE

During Music Mode (music playback), STEALTH’s volume level is adjusted independently of the phone’s Bluetooth playback volume. During a phone call, STEALTH’s volume and the phone’s volume are linked, following standard Bluetooth protocol.
TIP: If you experience low volume on Music Mode, be sure the volume is turned up on your phone as well as on STEALTH.
Example: When adjusting STEALTH’s volume in Music Mode, the phone’s Bluetooth volume is not affected.
However, in Phone Mode, adjusting STEALTH’s volume during a call affects the phone’s Bluetooth volume as well.

LED INDICATOR DEFINITION

• phone or music profile connected
2 FLASHES EVERY 2 SECONDS
ON MUSIC MODE| • playing back music
1 FLASH EVERY SECOND
ON PHONE MODE| • on a phone call
FLASH ALTERNATELY| • pairing mode. stealth ready to pair with device
FLASHING| • low battery
SOLID LIGHT| • charging

TROUBLESHOOTING

I paired the Stealth to my PC and when Windowstried to automatically install the drivers for the Stealth, it comes back with multiple “Bluetooth
Peripheral Device – No Driver Found” errors. Where can I find the drivers?| This means Windows was not able to find any Bluetooth drivers for your PC hardware. Please ensure you have your computer manufacturer’s
Bluetooth driver installed and try to pair the Stealth again. It should automatically install all Bluetooth-related functionalities of the Stealth
upon pairing.
I do not get any sound with my Acoustic Coil or
Helmet Speakers.| • Please ensure the selected module is screwed on tightly. Check the outer edge of the module is lined up with its base and that the IASUS logo is
perfectly horizontal. This position ensures a proper connection with the headset.
• When using the 3.5mm jack module, insert the speakers or earbuds gently. Do not force the plug too far into the module as it may damage
the inside. Use only helmet speakers or earbuds equipped with a slim 3.5mm plug.
My voice sounds distorted and muffled on the other party’s device.| Try speaking at a low volume and in a soft, calm, and clear manner. The loud volume will overwhelm the sensitive transponder microphone resulting in clipping of audio levels.
The volume coming out of the helmet speakers or earbuds is too soft even when the volume level on the Stealth is at its loudest.| Turn up the volume on your device during music playback. In Music Mode, the phone’s Bluetooth volume level is independent of the Stealth’s.
The volume coming out of the Acoustic Coil sounds very low.| Use an ear plug for your other ear when using Stealth in loud environments. In this scenario, your other ear becomes the dominant ear, making it difficult to get the audio from the Acoustic Coil.
How can I clean the neckstrap?| The neck strap can be taken off of the Stealth headset to wash by hand or put into a washer and dryer.

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