Shure 27EU3222B User Manual

PTH
Instructions

WARNINGS

Only for use between headphone jacks and earphones to

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interrupt the sound source for very brief conversation.

Not tested to be safe with non-Shure earphones.

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Always turn off PTH module when connecting or

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disconnecting cables.

Not for use as a hearing aid, hearing protection device,

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recording tool, or amplifier.

Always use in accordance with the all warnings and
instructions, in addition to any warnings and instructions

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of your sound source device and earphones.

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©2006, Shure Incorporated
27EU3222B (Rev. 1)

Printed in U.S.A.

PUSH TO HEAR (PTH) INSTRUCTION

u Set PTH and audio device volumes to lowest levels.
v Connect earphones and audio device.
w Switch PTH ON. Power LED light should be green.

When LED turns red, battery is low and should be
replaced.
x Slowly raise the PTH volume to a comfortable level.

Tapping the microphone should not cause
discomfort.

y Switch PTH OFF. Adjust volume on your audio
device.

NOTE: The Push-to-Hear module has a built-in limiter
to minimize sudden changes in sound level from the
microphone. The limiter does not affect sound source
levels.

OPERATION

When listening to your
audio player...

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OPERATION WITH PUSH TO HEAR (PTH)

...push PTH switch for
brief conversations without
removing earphones.

SET-UP

Microphone

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Power
LED

PTH
Switch

Audio Device

Earphones

Changing the Battery

Change battery when power LED changes from green to red.

Power LED

Volume Control

TECHNICAL SPECIFICATIONS

Output Impedance (On) 2.5 W

Output Impedance (Off) = output impedance of

source device +1 W

Max gain (at 1kHz) 24 dB

Min gain (at 3kHz) -27 dB (gain of circuitry)

Sensitivity (at 1kHz) -46 dB

Ducking Level of source -40 dB

Input connector 3.5 mm (1/8 in.) gold-

plated stereo plug

Power Consumption 30 mA

Battery Type (1) AAA

Battery Life (alkaline) Approximately 2-4 months

(normal usage)

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COMPLIANCE

This equipment has been tested and found to comply with the limits for
a Class B digital device, pursuant to Part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses
and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician help
This device complies with Part 15 of the FCC Rules. Operation is subject
to the following two conditions: (1) this device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
Changes or modifications not expressly approved by Shure Incorporated
could void your authority to operate the equipment.

CERTIFICATION

N 108

Canada

This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du
Canada.

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.

SHURE Incorporated Web Address: http://www.shure.com
5800 W. Touhy Avenue, Niles, IL 60714-4608, U.S.A.
In U.S.A., Phone: [phone] Fax: [phone]
In Europe, Phone: [phone] Fax: [phone]
In Asia, Phone: [phone] Fax: [phone]
International Fax: [phone]

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