Sigtronics SH-40S - Manual

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Model SH-40S
Headphone Instructions
The SH-40S series headphones are adjusted at the factory for immediate use
with all current standard radio systems in general aviation aircraft. SH-40S head-
phones are equipped with one plug in the standard configuration. The head-
phone plug is a large diameter plug and should be inserted into the headphone
jack (.250” standard stereo 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 headphone. Place the head-
phone over your head, adjust the slides up until minimum pressure is felt on
the top of your head. The headphone 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.
When you first connect the headphone, turn the volume controls on the head-
phone to maximum ( full clockwise on main cable 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 head-
phone 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 headphone
volume down, if necessary.
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The headphone parts may be cleaned with mild soap and water using a soft
cloth. Then dry immediately. Caution: Do Not immerse any part of the head-
phone in water or any other liquid. Exposure to moisture may cause internal cor-
rosion and failure and will void your manufacturers warranty.
Cleaning will help the headphone maintain its “like new” condition for many
years.
WARRANTY
Your headphone is covered by a limited three-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 headphone only. Parts
lists for other models are available on our Web Site or can be obtained by contact-
ing Sigtronics Corporation.
Sigtronics Corporation
178 East Arrow Highway
San Dimas, CA 91773
Phone: 909 305-9399
E-mail: [email protected]
Web Site: www.sigtronics.com