Sigtronics SH-40 User manual

igtronics

…when it counts!

Model SH-40

Headphone Instructions

The SH-40 series headphones are adjusted at the factory for immediate use with

all current standard radio systems in general aviation aircraft. SH-40 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 monaural 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 (children) or large headbands are needed, they may be

ordered from Sigtronics.

When you rst connect the headphone, turn the volume control on the headphone

up to the full clockwise position, 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 Corporation

178 East Arrow Highway

San Dimas, CA 91773

Phone: 909 305-9399

E-mail: info@sigtronics.com

Web Site: www.sigtronics.com

SIGTRONICS SH-40 HEADPHONE PARTS IDENTIFICATION BREAKDOWN

ITEM P/N DESCRIPTION ITEM P/N DESCRIPTION ITEM P/N DESCRIPTION

1100049 GROMMET, 5/16 INCH, RUBBER 11 100364 SCREW, 8-32 X 3/8, PHILLIPS HEAD 21 100258 CLIP, HEADBAND GUIDE, PLASTIC

2100360 KNOB, BLACK, VOLUME 12 100366 WIRE, 2 CONDUCTOR, #24, BLACK, 28 INCHES 22 100393 CLIP, ANTI-ROTATION, YOKE, PLASTIC

3100365 POTENTIOMETER, 2K 13 100367 YOKE, EAR CUP MOUNT, METAL 23 100383 HEADBAND, METAL, STANDARD

4100858 RECEIVER AND MOUNT, 300 OHM, MONO 14 100369 EAR SEAL, FOAM FILLED 24 100384 BRACKET, YOKE SUPPORT WITH TANG

5100108 SCREW, 4 X 1/4, THREAD FORMING 15 100568 STRAIN RELIEF, CABLE 25 800037 CABLE, HEADPHONE, MONAURAL

6100251 E-RING, EAR CUP TO YOKE RETAINER 16 100579 CLIP, CLOTHING, HEADSET CABLE 26 800145 HEADBAND , WITH CUSHION, S-40

7100252 NUT, HEX, 8-32, LOCKING 17 100373 SLIDE, YOKE BRACKET, LONG, NYLON 27 100257 OPTIONAL – HEADBAND, METAL, LARGE

8100401 EAR CUP, PRINTED AND DRILLED, VOL. & NON VOL. SIDE 18 100374 FOAM, SOUND ATTENUATING. NOTCHED, 1/2 INCH 28 100618 OPTIONAL – HEADBAND, METAL, YOUTH

9100362 CLIP, CROSS-OVER, WIRE, PLASTIC 19 100376 FOAM, SOUND ATTENUATING. RECEIVER HOLE, 1/2 INCH 29 100402 OPTIONAL – EAR SEAL, GEL FILLED

10 100363 SCREW, 8-32 X 1/2, PHILLIPS HEAD 20 100379 FOAM, SOUND ATTENUATING, RECEIVER COVER, 1/4 INCH

3- 6-2015

sh-40.pdf

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