Sigtronics SH-40S User manual

Sigtronics Corporation
178 East Arrow Highway
San Dimas, CA 91773
Phone: [phone]
E-mail: [e-mail]
Web Site: www.sigtronics.com
igtronics
®
Sigtronics
®
S
…when it counts!
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
headphones are equipped with one plug in the standard conguration.
The headphone 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 t the headphone. Place the
headphone 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 (chil-
dren) or large headbands are needed, they may be ordered from Sigtronics.
When you rst connect the headphone, turn the volume controls on the
headphone to maximum ( full clockwise on main cable side, counterclock-
wise 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 headphone 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.
continued on back…
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
headphone in water or any other liquid. Exposure to moisture may cause
internal corrosion 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 contacting Sigtronics Corporation

SIGTRONICS SH-40S HEADPHONE PARTS IDENTIFICATION BREAKDOWN
ITEM P/N DESCRIPTION ITEM P/N DESCRIPTION ITEM P/N DESCRIPTION
1800145 HEADBAND , WITH CUSHION, S-40 12 100251 E-RING, EAR CUP TO YOKE RETAINER 23 100935 WIRE, #22, JUMPER, HEADSET, 4 INCH
2100383 HEADBAND, METAL, STANDARD 13 100252 NUT, HEX, 8-32, LOCKING 24 100568 STRAIN RELIEF, CABLE
3100367 YOKE, EAR CUP MOUNT, METAL 14 100982 EAR CUP, PRINTED AND DRILLED, CABLE SIDE 25 100579 CLIP, CLOTHING, HEADSET CABLE
4100384 BRACKET, YOKE SUPPORT WITH TANG 15 100940 EAR CUP, PRINTED AND DRILLED, NON-MIC SIDE 26 100360 KNOB, BLACK, VOLUME
5100373 SLIDE, YOKE BRACKET, LONG, NYLON 16 100049 GROMMET, 5/16 INCH, RUBBER 27 100365 POTENTIOMETER, 2K
6100258 CLIP, HEADBAND GUIDE, PLASTIC 17 900123 EAR SEAL, FOAM FILLED, SET OF TWO 28 100763 RECEIVER / RECEIVER MOUNT, 300 OHM, STEREO
7100393 CLIP, ANTI-ROTATION, YOKE, PLASTIC 18 100374 FOAM, SOUND ATTENUATING. NOTCHED, 1/2 INCH 29 100618 OPTIONAL – HEADBAND, METAL, YOUTH
8100362 CLIP, CROSS-OVER, WIRE, PLASTIC 19 100376 FOAM, SOUND ATTENUATING. RECEIVER HOLE, 1/2 INCH 30 100257 OPTIONAL – HEADBAND, METAL, LARGE
9100363 SCREW, 8-32 X 1/2, PHILLIPS HEAD 20 100379 FOAM, SOUND ATTENUATING, RECEIVER COVER, 1/4 INCH 31 900124 OPTIONAL – EAR SEAL, GEL FILLED, SET OF TWO
10 100364 SCREW, 8-32 X 3/8, PHILLIPS HEAD 21 800029 CABLE, HEADPHONE, STEREO
11 100108 SCREW, 4 X 1/4, THREAD FORMING 22 100933 WIRE, CROSSOVER, OVER THE HEAD, 28 INCH
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3-15-2022
sh-40s.pdf