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 Sigtronics  Corporation 
178 East Arrow Highway 
San Dimas, CA   91773 
Phone: 909 305-9399 
E-mail: [email protected] 
Web Site: www.sigtronics.com

igtronics 

®

S

…when it counts!

igtronics 

®

S

Model S-68S

Headset Instructions

The S-68S series headsets are adjusted at the factory for immediate use with all 

current standard radio systems in general aviation aircraft. Headsets equipped 

with two plugs are the standard configuration. The headphone plug is the larger 

diameter plug and should be inserted into the headphone jack (.250" standard 

monaural jack). The mic plug is the smaller diameter plug and should be inserted 

into the microphone jack (.206" standard microphone jack).

The headband is adjustable through a full range of motion, or the locking nuts 

may be tightened to allow you to custom fit the headset. Place the headset over 

your head, adjust the slides up until minimum pressure is felt on the top of your 

head. The headset is now properly adjusted. For maximum noise attenuation, the 

clamping pressure has been set at the factory. Releasing the clamping pressure 

by bending the headband is not advised, because loss of attenuation will result. 

Note: If especially small (children) or large headbands are needed, they may be 

ordered from Sigtronics.

The microphone boom is fully adjustable and will rotate 180 degrees for use on 

the left or right side of the head. Make sure you are speaking into the side of the 

mic labeled “Talk” or substantial loss of gain will occur. Microphone placement 

should be at the corner of the mouth, approximately ¼" from the lips.

When you first connect the headset, turn the volume controls on the headset to 

maximum ( full clockwise on mic side, counterclockwise on pot side ), then adjust 

the listening volume with the audio control of either your radio or intercom as 

appropriate. Passengers should also turn their individual headset volumes up fully. 

Doing this allows for a full range of adjustment for each passenger, since those 

with the most acute hearing can turn their headset volume down, if necessary.

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The headset is equipped with a stereo / 

monaural switch on the main cable. For 

monaural sound or aircraft with only 

monaural jacks, move the switch to the 

monaural position. In aircraft equipped 

for stereo audio, move the switch to 

the stereo position.

The headset parts may be cleaned with 

mild soap and water using a soft cloth. Then dry immediately. Caution: Do Not 

immerse any part of the headset in water or any other liquid. Be especially care-

ful not to allow the microphone to become wet! Exposure to moisture may cause 

internal corrosion and failure and will void your manufacturers warranty. Cleaning 

will help the headset maintain its “like new” condition for many years.

WINDSCREEN

The microphone windscreen will reduce annoying wind noise and breath pops 

picked up by headset microphones. It also protects the microphone element from 

dirt and moisture. The windscreen should be washed regularly to maintain hygiene 

and avoid clogging. Wash in warm water and mild soap. Rinse thoroughly and 

make sure it is completely dry before putting it back on.

To remove the windscreen, carefully grasp the windscreen lightly along its entire 

length and remove from the microphone element being careful not to twist the 

element itself. To put the windscreen on the microphone, gently pulling from 

the open end. Do not pull it so tightly that it stretches against the end of the 

microphone.

WARRANTY

Your headset is covered by a limited five-year parts and labor warranty. Please see 

the enclosed warranty card for details.

You may refer to the parts list on the reverse side, if you choose to replace parts 

yourself. The parts list describes parts for this particular headset only. Parts lists 

for other models are available on our Web Site or can be obtained by contacting 

Sigtronics Corporation.

Stereo / Monaural Switch

Stereo

 

• •

Monaural

 

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