Seht SH10X User manual

SH10X
AVIATION HEADSET
USER MANUAL
Edition 0.2 (2018)

SEHT 10X USER MANUAL Edition 0.2
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Welcome
We are so confident this product will bring you of years of trouble free, quiet, comfortable
and enjoyable use that we offer not only a full 5 year warranty (by registration, see
separate document for details) but we also offer our unrivalled satisfaction guarantee, if
you are not entirely satisfied for any reason with the product simply return it (full details
available on request)
The SH10X is not just a high quality ANR aviation headset employing the latest active
noise cancelling technologies but with an unrivalled price/performance ratio and weighing
in on your head at under 180 grams it is one of the lightest and best performing aviation
headsets available.
WARNING!
Please read the information in this user manual carefully and completely before using
your headset. Keep these instructions and make them easily accessible to all other
users. Always include this user manual when giving this headset to third parties.
In an unlikely event of a problem with your headset, it is recommend to switch to an
alternate communication method and to use standard cockpit resource management
skills to minimize distraction.
Your aircraft sounds such as engines, propellers, warning alarms and other sound
sources may sound differently when using a new headset.
When listening to an audio source via the SH10X limit the volume to safe levels to
ensure you are able to hear communication and warning alarms from your aircraft.
Do not attempt to disassemble the headset as this may void your warranty and result in
unexpected performance of your headset. Always refer servicing and repair to SEHT
approved service centres. Contact SEHT for details.
Features
Advanced reverse noise cancelling technology, reduces up to 90% of background noise.
Noise cancelling dedicated 50mm driver, single piece formed corona diaphragm ensuring
crystal clear, high quality sound reproduction. Hi-Fi quality speakers for music
reproduction to maximize listening pleasure and reduce fatigue.
Failsafe design to ensure communication is not lost in the event of battery failure.
Headset reverts automatically to passive mode.
Full cover cap design, high quality synthetic kid leather ear seal material to maximise
comfort and reduce background noise.
Electret noise cancelling microphone to ensure faithful voice reproduction and minimise
noise and unwanted breakthrough of interference.

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Using the SH10X
The SH10X uses state-of-the-art technology to reduce exterior noise and promote clear
in-flight communications reducing user fatigue.
Once the ANR power switch is activated the SH10X reduces unwanted ambient noise
through Active Noise Reduction (ANR). This is done by placing a microphone inside and
outside the ear cup and generating an anti-noise signal through the speakers.
The anti-noise and the ambient noise cancel each other out before they reach the ear
resulting in a quieter environment. Through this technology low frequency ambient noise
is significantly reduced making communication easier and reducing user fatigue.
The SH10X will continue to operate as a standard passive aviation headset should the
ANR become inactive for any reason such as low or no battery power.
Getting started
Correct fitment is essential to ensure the correct operation of any headset. A good seal
around your entire ear and a symmetrical fit across the top of your head is necessary to
ensure the correct performance of the ANR feature.
The following steps will assist you in achieving the proper fit:
1. Extend the ear shell slider adjusters fully.
2. Place the headset on your head and compress the sliders slowly on each side
until the head pad rests softly on the top of your head.
3. Adjust the ear cups to ensure the ears are fully inside the ear seal and there is
uniform pressure on your head
4. Tighten the adjusters securely to prevent unwanted movement.
5. Position the microphone approximately 3mm from your lips.
Aircraft Squelch/Gain control (locate this on your aircraft)
The sensitivity of the squelch is controlled by turning the control clockwise (increasing
microphone sensitivity) or by turning the control counter clockwise (decreasing
microphone sensitivity).
The squelch can be adjusted to meet even the most extreme noise levels of aircraft
noise.
Setting the squelch correctly allows the intercom to be active only when someone speaks
into their headset microphone.
The intercom will become inactive as soon as they stop speaking. In this manner all
Extraneous noise in the cockpit is not heard over the microphone
IMPORTANT
If the headset is not fitted correctly this may generate an oscillating noise, this is caused
by the ears seals not sealing entirely around the ear, adjust the ear cup and ear seal to
make sure the ears are sealed completely.

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The microphone can be rotated and placed on the right or left side of the headset. To
adjust the microphone placement rotate the microphone from its base and bend the
flexible boom. For clear and crisp communication, the microphone should be placed
approximately 3mm from the lips.
Understanding the SH10X Controls
A- Power ON/OFF (LED glows blue when on)
B- Auxiliary 3.5mm stereo input jack (link cable included)
C- Independent left and right ear volume controls (does not affect auxiliary input)
D- Mono/Stereo switch
Battery Type
The SH10X uses two AA batteries (supplied). Always use good quality alkaline batteries
to ensure the best performance. DO NOT use rechargeable batteries as they provide
reduced and uneven voltage which can interfere with the correct headset performance.
The SH10X has a failsafe mode and will continue its basic operations of hearing and
transmitting in the event of battery failure or without batteries fitted.
DO NOT mix old and new batteries together.
Battery Life
The use of alkaline batteries can typically provide up to 40 hours of use, the exact
duration however depends on the amount of noise reduction required in your cockpit. To
maximise battery life turn off ANR when headset is not in use.

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Battery Installation
To open the battery compartment door push down the battery cover (see below)
1. Insert two AA batteries in the battery compartment observing the correct polarity
2. Slide headset power switch to the ON position to activate the ANR function
3. Observe the LED above the headset power switch illuminates blue
Stereo / Mono Setting
Whether you should use the Mono or Stereo setting depends on your aircraft’s avionics.
Incorrect setting will result in communication being heard in only one side. Stereo/Mono
setting does not affect the audio from auxiliary sources.
By default the switch is set to Mono operation, to change this setting remove the battery
compartment door (see above) and slide the switch to the desired setting (see below),

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Volume Adjustment
Each ear cup’s volume can be independently adjusted by the slider controls on the
controller handset.
The overall headset volume will be determined based on the settings on the headset as
well as the aircraft’s intercom or radio. Avoid setting the volume levels too high; exposure
to loud sounds can cause permanent hearing damage.
Auxiliary Input
The SH10X can be connected to an external audio source such as a portable audio or
GPS device via the provided 3.5mm jack cable. You will find the auxiliary input on the
side of the handset controller
Tip: Be sure to have the auxiliary audio set at a volume that ensures you do not miss any
important communications or aircraft sounds.
Pro Tips
1. Always ensure the SH10X is fitting correctly by reviewing adjustments each time
you wear them, ear seals should be centered over the ears for best performance.
2. There may be a noise generated if the ears seals are not providing a good seal
around the ear, in this case you should adjust the ear cup and ear seal to make
sure the ears are covered and sealed correctly.
3. Position the microphone in front of your lips for maximum noise cancellation.
4. Set Mono / Stereo setting to match your aircrafts avionics. In most situations this
would be mono, if set to the incorrect setting audio will be lost in one ear.
5. When the headset is powered on it is advisable to set the volume to the minimum
level for clear communications, this ensures the noise level remains low and
readability is improved

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FAQ
Q. Why can I hear in only one side?
A. The SH10X is compatible with both Stereo and Mono aircraft avionics. If your
headset is set to the incorrect setting for your aircraft hearing will be lost in one
side.
Q. What is the best way to store the headset?
A. Please remove the batteries before storing the headset for a prolonged period,
always store your headset in a ventilated area away from direct sunlight.
Q. Why do I need to yell to activate the microphone?
A. Your avionics squelch setting must be adjusted correctly; it is common for every
pilot to change the squelch setting just like adjusting the volume. Consult
someone who is familiar with your airplane’s avionics if you cannot locate the
squelch control.
Q. Why can I always hear cockpit noises in my ears even when I am not talking?
A. Your avionics squelch setting must be adjusted correctly; it is common for every
pilot to change the squelch setting just like adjusting the volume. Consult
someone who is familiar with your airplane’s avionics if you cannot locate the
squelch control.

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Technical Specifications
General
Battery power supply: 3V, 2 x AA alkaline batteries (provided)
Operating Temperature: -4 to 94°F / -20 to 70°C
Storage Temperature: -31 to 167°F/ -35 to 75°C
Cord Length: 180cm
Weight (including controller and cable): 10.5oz / 300g
Headphone
Type: Dynamic
Frequency Response: 50 Hz to 20 kHz
Sensitivity: 95 5 dB SPL
Microphone and Amplifier
Type: Noise-canceling Electret
Frequency Response: 100 Hz to 5 kHz
Operating Voltage: 8-32 VDC
Matching impedance: 150-1000 Ohms
Sensitivity: -33 4 dB
Active Noise Reduction
Main Attenuation Frequency Band: 20Hz to 700Hz
Power Consumption: 30mW
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