PTH
Instructions
WARNINGS
Only for use between headphone jacks and earphones to
interrupt the sound source for very brief conversation.
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Not tested to be safe with non-Shure earphones.
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Always turn off PTH module when connecting or
disconnecting cables.
Not for use as a hearing aid, hearing protection device,
recording tool, or amplifier.
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Always use in accordance with the all warnings and
instructions, in addition to any warnings and instructions
of your sound source device and earphones.
©2006, Shure Incorporated
27EU3222B (Rev. 1)
Printed in U.S.A.
OPERATION
When listening to your
audio player...
OPERATION WITH PUSH TO HEAR (PTH)
...push PTH switch for
brief conversations without
removing earphones.
SET-UP
Microphone
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)
Min gain (at 3kHz)
Sensitivity (at 1kHz)
24 dB
-27 dB (gain of circuitry)
-46 dB
Ducking Level of source -40 dB
Input connector
3.5 mm (1/8 in.) gold-
plated stereo plug
Power Consumption
Battery Type
30 mA
(1) AAA
Battery Life (alkaline)
Approximately 2-4 months
(normal usage)
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
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.
N 108
5800 W. Touhy Avenue, Niles, IL 60714-4608, U.S.A.
In U.S.A., Phone: 1-847-600-2000 Fax: 1-847-600-1212
In Europe, Phone: 49-7131-72140 Fax: 49-7131-721414
In Asia, Phone: 1-852-2893-4290 Fax: 1-852-2893-4055
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