IMPORTANT USeR INfORMATION
fITTINg INSTRUCTIONS
PeRSONAlIzeD HeADBAND ADjUSTMeNTS
Denali headsets accommodate the differences in head shapes and sizes of the pilot population
through angled ear domes, the shape and surface area of the ear seal, low side force and a light-
weight design. When worn properly, you will feel very little pressure on top of the head, which is a
refreshing departure from the traditional fit and feel of an older style aviation headset.
Additionally, personalized fit adjustments can be made in the length of the headband, the rotation
of each ear cup, both side-to-side and up and down, and the placement of the boom and microphone.
DeNAlI HeADPAD ReMOvAl AND INSTAllATION
ReMOvAl
Your new Denali ear seals are permanently attached to the hard
plastic backing plate. Do not attempt to remove the ear seal from
the backing plate.
To remove the ear seal assembly, look inside the ear seal opening,
half way down either side of the ear cup. You will notice a small
cut-out just large enough to place your finger tip under the backing
plate. Pull the backing plate (with the ear seal) away from the ear
cup. Note: it will take a bit of force and the ear seal will pop off of
the ear cup.
DeNAlI eAR SeAl ReMOvAl AND INSTAllATION
IMPORTANT:
Contrary to popular belief, wrapping the headset cords around the headband is not
a proper storage method. In fact, by doing so you risk damaging the com cable, splitter, or battery
box. Instead, loosely loop the headset cord in your hand and place the cable in the headset bag,
next to the headset.
geNeRAl CleANINg
To clean the Denali headset, earseals, or headpad, dampen a non-abrasive cloth with water and mild
soap. After cleaning, wipe dry with a soft cloth. Note: do not allow any water to seep into the ear
dome.
IMPORTANT:
Do not immerse the headset in water. Never use bleach on ear seals, headpad, or
any other part of the Denali headset.
• Insert the larger headset plug into the jack marked "headphone" or "phone" (on your aircraft
com panel, intercom or radio).
• Insert the smaller headset plug into the jack marked "microphone" or "mic."
• Set the stereo/mono switch on the cable splitter box to the "M" position. If connecting to a
stereo intercom, set the switch to the "S" position.
• If you are not sure about the type of intercom in the aircraft, test the headset by selecting the
"S" position and talking into the headset. If you hear sidetone out of one ear only, you have a
mono intercom. Move the switch to "M."
• for the ANR model:
The stereo/mono switch is located on the back of the in-line battery box,
near the clip.
• Adjust the headband sliders for proper fit and comfort, making sure the boom is being worn on
the left side of the head.
• Individual volume controls are located on the front of each eardome to reduce or adjust the
level of audio in each headset ear cup.
• for the ANR model:
Once the 9-volt battery is installed, turn the ANR power to the ON
position, indicated with the symbol "|". The OFF position is indicated with an "o". A blinking
green LED indicates the active noise cancellation circuit is ON. A blinking red LED indicates
low battery life. (For proper battery installation, see the diagram in the Care and Maintenance
section of this guide.)
If the aircraft does not have a built-in push-to-talk (PTT) switch, a portable PTT switch must be
installed in order to use the radio.
An avionics technician should optimize the master gain control located in the aircraft radio
whenever adding a new model microphone to the system.
Sure Power System(SPS):
To conserve battery life, ANR models will automatically shut off
the ANR circuit if no audio is sensed by the headset for a period of 28 minutes. Full passive
performance is maintained. ANR operation is reactivated by turning the ANR power switch to
the OFF position and back to the ON position, indicated with the symbol "|".
MICROPHONe AND BOOM ADjUSTMeNTS
INSTAllATION
WARNINg
:
Do not store your Denali headset in temperatures that exceed 156° Fahrenheit. Do not
leave it in the sun, or hanging on the yoke of your aircraft, or exposed in conditions where the surface
area of the headset might exceed this high temperature.
Under certain conditions, a mic muff might be necessary. A mic muff is provided for your convenience.
We also recommend that in the interest of hygiene, you replace your ear seals at least annually.
• Hold the Denali headset in front of you. Place the dome that holds the mic boom in your left hand.
• Extend the headband to full extension. When you have reached the
maximum headband extension, the headband slider will stop. Make
sure you have extended the headband equally on both sides.
• Place the headset on your head. If the domes feel as if they’re sitting too
low on your ears, starting on one side of the headset, move the headband
slider to a smaller position, ensuring both sides are adjusted equally.
IMPORTANT:
While wearing the Denali, you should feel very little pressure
on top of your head. THIS IS NORMAL AND OPTIMAL.
If you’re an experienced headset wearer, you may have a tendency to reduce
the headband size until you feel a familiar pressure on the top of your head or
at the top of your jawbone. For Denali, this indicates you’ve actually reduced
the size of the headband too much. Extend the headband in a downward
direction, on both sides, until the top of the headset seems to "disappear."
Check for a secure fit by shaking your head from side to side. Denali should
remain firmly in place—without creating undue pressure on the top of the head.
INDIvIDUAl eAR DOMe ADjUSTMeNTS
Denali’s ear domes rotate not only in an up and down direction, but also from side-to-side. This allows
for maximum adjustment around the ear and jaw area.
• Once the headset is in place and the headband is
adjusted properly, you may want to individually rotate
the dome and ear cup around each ear, to determine
the most comfortable position.
• If during an extended flight you start to feel a bit of a
pressure point, adjust the ear cup or the length of the
headband to restore comfort.
Outward dome rotation
Inward dome rotation
• Adjust the mic boom for proper fit and comfort. Place the microphone no
more than 1/8" from lips, at the corner of the mouth. This is critical to the
performance of the noise-canceling electret microphone.
IMPORTANT:
All Denali mic booms are shipped from the factory for wearing
on the left side of the head only. Because the domes are canted to match the
angle of the ears, the boom can ONLY be worn on the left side.
CAUTION:
Rotating the boom beyond the “stop” will cause non-warranty damage
to the boom
0-1/8" from lips
CARe AND MAINTeNANCe
geNeRAl CARe
As with most electronic equipment, it’s important to protect your Denali headset from exposure to the
elements. Do not leave the headset on the seat of a plane or car, or in intense, direct sunlight exceeding
156° F. Do not leave the headset out in the rain or in freezing temperatures. Return the headset to its
carrying case and store in a cool, dry area.
Cut-out
ear seal
backing plate
ear cup
INSTAllATION
Lay the gasket (for ANR models only) flat on the ear seal backing plate. The gasket must have no
wrinkles. Carefully position the backing plate (with the gasket) on the ear cup and apply even pres-
sure with your fingers spaced around the circumference of the ear seal/backing plate and then snap
on to the ear cup. Note: the backing plate must not have any space between it and the ear cup.
Your new Denali headpad is permanently attached to the backing plate. Do not remove the headpad
from the backing plate.
To remove the headpad, pull on each side of the headpad and it will snap out of position on the
headset. To install the headpad, line it up to the top of the headset and then snap into position.
PlUg CONNeCTION CHART
headphone
.206" phone plug
microphone
ground
microphone hot
no connection
program audio
ground (headphone)
microphone
ground and shield
microphone hot
left on stereo (300)
program on mono (150)
headphone
.25"phone plug
ground
and shield
right on stereo (300)
ground on mono
Helicopter Plug
