Sigtronics ST-48 User manual

igtronics

Sigtronics

…when it counts!

Sigtronics Corporation

178 East Arrow Highway

San Dimas, CA 91773

Phone: 909 305-9399

E-mail: info@sigtronics.com

Web Site: www.sigtronics.com

Model ST-48

Headset Instructions

The ST-48 series headset is adjusted at the factory for immediate use. The headset

is equipped with a single plug and a coiled cord.

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

may be tightened to allow you to custom t the headphone. Place the headphone

over your head and adjust the slides up until minimum pressure is felt on the top

of your head. For maximum noise attenuation, the clamping pressure of the head-

band has been set at the factory. Releasing the clamping pressure by bending the

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

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 rst connect the headset, turn the volume control on the headset up

to the full clockwise position, then adjust the listening volume with the audio

control of either your radio or intercom as appropriate. If applicable, crew mem-

bers 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.

continued on back…

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 careful 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.

Put the windscreen on the microphone by 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 two-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.

SIGTRONICS ST-48 HEADSET PARTS IDENTIFICATION BREAKDOWN

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

1800221 HEADBAND , WITH CUSHION, ST-48 13 100742 NUT, HEX, 8-32, LOCKING, BLACK 25 100376 FOAM, SOUND ATTENUATING. RECEIVER HOLE, 1/2 INCH

2100602 HEADBAND, METAL, STANDARD, BLACK 14 100970 EAR CUP, PRINTED AND DRILLED, MICROPHONE SIDE 26 100379 FOAM, SOUND ATTENUATING, RECEIVER COVER, 1/4 INCH

3100603 YOKE, EAR CUP MOUNT, METAL, BLACK 15 100971 EAR CUP, PRINTED AND DRILLED, VOLUME CONTROL SIDE 27 800035 CABLE, HEADSET, STEREO, COILED

4100604 BRACKET, YOKE SUPPORT WITH TANG, BLACK 16 100049 GROMMET, 5/16 INCH, RUBBER 28 100933 WIRE, CROSSOVER, OVER THE HEAD, 28 INCH

5100373 SLIDE, YOKE BRACKET, LONG, NYLON 17 800193 MICROPHONE & FLEX BOOM ASSEMBLY 29 100935 WIRE, #22, JUMPER, HEADSET, 4 INCH

6100258 CLIP, HEADBAND GUIDE, PLASTIC 18 100597 NUT, HEX, 3/8-24, FLEX BOOM ADAPTER 30 100568 STRAIN RELIEF, CABLE

7100393 CLIP, ANTI-ROTATION, YOKE, PLASTIC 19 10 0 611 WINDSCREEN, MICROPHONE, FOAM, BULK 31 100769 KNOB, 1/2 INCH, BLACK, TACTICAL

8100362 CLIP, CROSS-OVER, WIRE, PLASTIC 20 90 0111 WINDSCREEN, MICROPHONE, FOAM, PACKAGED 32 100077 POTENTIOMETER

9100745 SCREW, 8-32 X 1/2, PHILLIPS HEAD, BLACK 21 100612 O-RING, WINDSCREEN RETAINER, SE-48 33 100858 RECEIVER AND MOUNT, 300 OHM, MONO

10 100744 SCREW, 8-32 X 3/8, PHILLIPS HEAD, BLACK 22 800192 PREAMP 34 100613 OPTIONAL – HEADBAND, METAL, LARGE, BLACK

11 100108 SCREW, 4-40 X 1/4, THREAD FORMING 23 100369 EAR SEAL, FOAM FILLED 35 100402 OPTIONAL – EAR SEAL, GEL FILLED

12 100743 E-RING, EAR CUP TO YOKE RETAINER, BLACK 24 100374 FOAM, SOUND ATTENUATING. NOTCHED, 1/2 INCH

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10-7-2021

st-48.pdf

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