Shure I4C User Manual

©2005, Shure Incorporated
27EN3212 (Rev. 2)

Sound Isolating Earphones

I4c

These sound-isolating earphones with

VoicePort inline microphone connect

to both your cell phone and portable

media player. The inline control switch

allows you to easily transition from

listening to music to answering

phone calls. Tuned Port-enhanced

High Definition Drivers deliver a

superior frequency soundstage with

extended bass that you can now enjoy

at low listening levels, even in noisy

environments.

Printed in U.S.A.

WEARING THE EARPHONES

Wear the the earphones as illustrated below.

Over the ear

in front

INSERTING THE EARPHONES

If the earphone seems to be lacking in low frequency response (bass), check
the tightness of the seal between the earphone and your ear, or try one of the
other sleeve options.

Warning:

Do not push the earphone sleeve beyond the ear canal opening.

left ear

Make sure that the sleeve completely
covers the earphone nozzle. If any part
of the nozzle is exposed, the sleeve is
not properly installed.

right ear

CHOOSING AN EARPHONE SLEEVE

Your earphones come with a selection of sleeves. Make sure the sleeve you
use is easy to insert into your ear, fits comfortably, and is easy to remove from
your ear.

Flex Sleeves

In small, medium, and large sizes. Made from translucent
PVC.

Soft Flex Sleeves

In small, medium, and large sizes. Made from pliable rubber.

Foam Sleeves

When using the foam sleeves, compress the sleeve between
your fingers before inserting it into the ear canal. Hold the
earphone in place for about ten seconds while the foam
expands and creates a tight seal.

Triple-Flange Sleeves

If desired, the sleeve nozzle may be shortened. Use sharp
scissors to carefully trim the nozzle to the desired length.

INLINE SWITCH CONTROL CLEANING THE EARPHONE NOZZLE

If the nozzle of your earphone is blocked, clean the nozzle using the supplied

Push and hold to MUTE cell phone microphone

Volume

Note: switching to media during call mutes cell phone.

wax removal loop.

Wax Removal Loop

Nozzle

When cleaning, do not force any object through the earphone nozzle! This will
damage the earphone sound filter.

If necessary, the supplied replacement nozzles may be used. See the back of
this guide for instructions on nozzle replacement.

SAFE USE







�

















Use a slow twisting motion to remove the earphones. Never pull
on the earphone cord.

Warning: If a sleeve becomes lodged in your ear, seek skilled
medical assistance to remove the sleeve. Damage to the ear

may be caused by non-professionals attempting to remove the
sleeve.

Prior to inserting the earphone, always recheck the sleeve to
make sure it is firmly attached to the nozzle.

Turn up the volume control only far enough to hear properly.

Ringing in the ears may indicate that the volume level is too high.
Try lowering the volume.

If you connect these earphones to an airplane’s sound system,
listen at low levels so that loud messages from the pilot do not
cause discomfort.

Have your ears checked by an audiologist on a regular basis. If
you experience wax buildup, discontinue use until an audiologist
has examined your ears.

Stop using the earphones if they are causing great discomfort or
infection.

FURNISHED ACCESSORIES

Carrying pouch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95A2259

Fit Kit w/cleaning tool . . . . . . . . . . . . . . . . . . . . . . . . 90XJ1371

Triple flange sleeves . . . . . . . . . . . . . . . . . . . . . . . . . 90WX1371

Replacement nozzles . . . . . . . . . . . . . . . . . . . . . . . . 90XF1371

Plug adapter — 1/8” to 1/4” . . . . . . . . . . . . . . . . . . . PA234

REPLACEMENT PARTS

Bag of 20 foam sleeves . . . . . . . . . . . . . . . . . . . . . . . PA750

Bag of 500 foam sleeves . . . . . . . . . . . . . . . . . . . . . . PA754

Bag of 10 clear flex sleeves:
small
medium

large . . . . . . . . . . . . . . . . . PA756L

Bag of 10 soft flex sleeves:
small
medium

large . . . . . . . . . . . . . . . . . PA758L

Triple-flange sleeves (2)

Replacement nozzles (2) . . . . . . . . . . . . . . . . . . . . . . PA4NC

. . . . . . . . . . . . . . . . PA756S

. . . . . . . . . . . . . . PA756M

. . . . . . . . . . . . . . . . PA758S

. . . . . . . . . . . . . . PA758M

. . . . . . . . . . . . . . . . . . . . . . PA755

TECHNICAL SPECIFICATIONS

Transducer type Single balanced armature

Sensitivity (at 1kHz) 109 dB SPL/mW

Impedance (at 1kHz) 29 Ω

Output connector Gold-plated 3.5 mm (1/8-inch) stereo plug

Cable length 157 cm (62”)

Net weight 31 g (1.1 oz.)

Operational temperature -18° C to 57° C (0° F to 135° F)

Storage temperature -29° C to 74° C (-20° F to 165° F)

CUSTOM EARPHONE SLEEVES

Those who use earphones regularly for extended periods of time often find
custom-fit molded sleeves offer the best comfort and sound isolation.

Ask a Hearing Health Care Professional about creating custom molded sleeves
for your earphones. For more information, visit http://www.sensaphonics.com.

REPLACING THE EARPHONE NOZZLE

Replace the nozzle if it becomes damaged, or if wax buildup cannot be
removed using the wax removal loop.

Unscrew the retainer  from the earphone base .

1.

Remove the nozzle .

2.

Slide the retainer  over the new nozzle .

3.

Place the nozzle on the earphone base with the flange  aligned with the

4.

groove in the base. Tighten the retainer .

Be careful when replacing the earphone nozzle. Parts are small and easily lost
if dropped.

MAINTENANCE

Careful maintenance ensures a tight seal between the sleeve and



nozzle, improving sound quality and product safety.

Keep the earphones and sleeves as clean and dry as possible.



Do not expose earphones to extreme temperatures.



Wipe the earphones and sleeves with mild antiseptic to avoid



infections. Do not use alcohol-based disinfectants.

CERTIFICATION

Eligible to bear CE marking.

Conforms to European EMC Directive 89/336/EEC.

Meets applicable tests and performance criteria in European Standard
EN 55103 (1996) Parts 1 and 2, for residential (E1) and light industrial (E2)
environments.

FULL TWO YEAR WARRANTY

Shure Incorporated (“Shure”) hereby warrants that this product will be free
from defects in materials and workmanship for a period of two years from
the date of purchase. At its option Shure will repair or replace the defective
product and promptly return it to you, or refund the purchase price. You should
retain proof of purchase to validate the purchase date and return it with any
warranty claim.

If you believe this product is defective within the warranty period, carefully
repack the unit, insure it, and return it postage prepaid to:

Shure Incorporated
5800 W. Touhy Ave.
Niles, IL 60714-4608

Phone: [phone] U.S. Fax: [phone] Int’l Fax: [phone]

Shure Europe GmbH, Phone: [phone] Fax: [phone]

Shure Asia Limited, Phone: [phone] Fax: [phone]

SHURE Incorporated http://www.shure.com

United States, Canada, Latin America, Caribbean:

5800 W. Touhy Avenue, Niles, IL 60714-4608, U.S.A.

Europe, Middle East, Africa:

Asia, Pacific: