The Twin Pro Wireless Microphone System
User Guide
The Twin Pro
Wireless Microphone System User Guide
©2006 Shure Incorporated
Printed in U.S.A.
27C8642 (Rev. 4)
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DESCRIPTION
INTRODUCTION
The Twin Proꢀ Wireless System is the finest in its class. This
system will give you excellent performance for years to come.
T88 Wireless Receiver (Figure 1)
System Contents
The Twin Pro Wireless System contains the following
components:
5
FRONT
• One T88 dual channel wireless receiver
• Two transmitters available in one of three different combina-
tions (see System Combinations below)
• One PS20 (120 Vac) or PS20E (230 Vac) power adapter
• One plastic screwdriver for squelch adjustment
1
2
3
4
1
2
3
4
System Combinations
The Twin Pro system includes one of the following three transmit-
ter combinations:
5
• Two handheld microphone transmitters (includes two swivel
adapters and two anti-roll devices)
or
• Two body-pack transmitters with lavalier microphones
or
7
6
7
• One handheld microphone and one body-pack transmitter
(includes one swivel adapter and one anti-roll device)
BACK
FIGURE 1
1
2
Power Indicators.
RF Signal Indicators. Yellow indicates when RF (radio
frequency) signals are received from the transmitter.
3
Audio Peak Indicators. These lights flicker occasionally
in normal operation. They are ON steadily when the au-
dio input is overloaded.
4
5
Volume Controllers. Controls the audio output level.
Telescoping Antennas. Receive signals from the
transmitters. Make sure the antennas are fully extended
vertically.
6
7
Power Input Connector. Connects to a PS20 (120 Vac)
or PS20E (230 Vac) power adapter.
Independent Audio Output Connectors. There is a
separate, unbalanced 1/4 inch phone jack for each
channel.
1
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T2 Handheld Microphone Transmitter (Figure 2)
T1 Body-Pack Transmitter (Figure 3)
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OFF PWR
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ON
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MUTE
FIGURE 2
FIGURE 3
Battery Compartment.
1
2
Antenna. For best operation, the antenna must hang
vertically, and should not be coiled or bundled.
1
2
3
POWER ON/OFF Switch. Turns transmitter on and off.
POWER Indicator. Lights when transmitter is turned on.
3
4
5
6
Belt Clip. Allow transmitter to be attached to belt.
POWER Indicator.
LOW BATTERY Indicator. Red light glows when you
have one hour or less of useful operating time; when this
light glows, change the battery.
POWER ON/OFF Switch. Turns transmitter on and off.
4
5
6
MIC ON/MUTE Switch. Lets you turn the microphone
audio on and off (muting the microphone).
Audio ON/MUTE Switch. Mutes the transmitter to pre-
vent unwanted sounds from being picked up by the re-
ceiver without turning the transmitter off.
Audio Gain Control. Provides audio level adjustment to
accomodate different sound sources.
7
8
LOW BATTERY Indicator. When this red light is glow-
ing, you have one hour or less of useful operating time;
change the battery.
9V Alkaline Battery (shown installed). Provides power
to the microphone-transmitter. Typical battery life is 18
hours.
Audio Gain Control. Provides audio level adjustment to
accommodate different sound sources (e.g., speaking or
playing an instrument). The factory setting is at mid-point.
A small screwdriver is supplied to make adjustments.
7
Battery Cover. Unscrews for access to the 9V alkaline
battery and gain control.
9
Microphone Input Connector. 4-Pin miniature connec-
tor provides connection to a variety of lavalier and head-
set microphone cables, and the Shure WA302 instrument
adapter cable.
10 Lavalier Microphone. Condenser lavalier microphone
supplied with a mount that clips onto a tie, lapel, or
acoustic instrument.
2
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USING THE T88 WIRELESS RECEIVER
Connecting the T88 Wireless Receiver
USING THE T2 HAND HELD MICROPHONE
TRANSMITTERS
Operating the T2 Hand Held Microphone Transmitters
1. Press the POWER switch on the T88 receiver ON.
2. Slide the transmitter POWER ON/OFF switch to the ON posi-
tion. Check the battery level. If the LOW BATTERY indicator
is lit, see Transmitter Battery Installation.
3. Check the RF indicator on the T88 receiver to see if the radio
signal is being received.
4. Slide the MIC ON/MUTE switch to the ON position and begin
speaking or singing.
T88 BACK
NOTE: If the red PEAK light on the receiver does not flicker
during the loudest sounds, the transmitter gain may need to be
increased. See the Transmitter Audio Gain Adjustment
section.
5. During the performance or presentation, slide the MIC ON/
MUTE switch to the MUTE position when the microphone is
not being used.
AUDIO MIXER
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or KARAOKE UNIT
6. When the performance or presentation is over, slide the trans-
mitter POWER ON/OFF switch to the OFF position to con-
serve battery power.
AC ADAPTER
FIGURE 4
1. Connect the receiver outputs for channels 1 and 2 to the mixer
or karoake unit using unbalanced, single-conductor, shielded
cables with1/4-inch phone plugs.
T2
TRANSMITTERS
2. Connect the ac adapter to the POWER jack on the rear panel
of the receiver.
3. Plug the ac adapter into an appropriate power outlet.
Squelch Adjustment
T88
RECEIVER
SQUELCH
FIGURE 6
Transmitter Battery Installation
1. Slide the transmitter POWER ON/OFF switch to the OFF posi-
tion.
DECREASE
INCREASE
2. Unscrew the transmitter battery cover to expose the battery
terminals, as shown in Figure 7.
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FIGURE 7
FIGURE 5
3. Insert a fresh 9V alkaline battery into the battery compartment
as shown in Figure 7 (Alkaline recommended and included
with the system). A fresh 9V alkaline battery should typically
provide 18 hours of performance time. A fully charged 8.4V
NiCad battery should provide 2 hours of performance time.
When the LOW BATTERY light on the transmitter turns on,
you have 1 hour or less of useful battery life remaining;
change the battery at your first opportunity.
The receiver squelch control is factory preset at the 12
o'clock position for optimum performance. No further adjust-
ment is normally required. However, it is possible to adjust the
squelch control to emphasize either signal quality or system range.
• To raise the squelch threshold, rotate the control clockwise.
This causes the receiver to demand a higher quality signal
(less noise before muting), but it reduces the operating
range.
• To lower the squelch threshold, rotate the control counter-
clockwise. This allows a lower quality signal through (more
noise before muting), but it extends the operating range.
IMPORTANT: Carbon-zinc and zinc-chloride batteries will not
provide adequate power and are not recommended.
4. Replace the battery cover.
3
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USING THE T1 BODY-PACK TRANSMITTERS
Installing the Anti-Roll Device
The rubber anti-roll device prevents hand-held microphones
from rolling off onto the ground when they are set down on a flat
surface, such as a table or speaker cabinet. The anti-roll device
proves an important safeguard in stage situations where the T2
may be used by inexperienced microphone handlers.
Operating T1 Body-Pack Transmitters
To install the anti-roll device, simply slip it over the microphone
handle and slide it up so that it is positioned just below the label un-
der the microphone grille, as shown in Figure 8.
LAVALIER
MIC
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T88 RECEIVER
FIGURE 8
FIGURE 10
Gain Adjustment
NOTE: The T1 body-pack system is designed for use with
other equipment, such as lavalier microphones, guitars,
headset microphones, etc. See your Shure dealer for details
on ordering the proper equipment for your needs.
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1. Clip the T1 body pack transmitter to your belt or guitar strap.
2. Connect the lavalier microphone, headset or instrument
adapter cable to the body-pack transmitter.
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3. Turn the transmitter POWER switch ON. Check Power/Battery
fuel gauge.
4. Check the RF Signal Indicator on the T88 receiver to see if the
RF signal is being received.
5. Slide the transmitter ON/MUTE switch to the ON position and
begin speaking or playing your instrument.
FIGURE 9
The transmitter audio gain control has been factory preset to
provide satisfactory output. However, if the PEAK light on the T88
receiver is constantly on or never on, the transmit audio level may
require adjustment. Use the gain controls as follows to adjust the
equipment for the best sound quality.
NOTE: If the red PEAK light on the receiver does not flicker
during the loudest sounds, the transmitter gain may need to be
increased. See the Transmitter Audio Gain Adjustment
section.
To adjust the audio gain, locate the transmitter audio gain con-
trol and use the supplied screwdriver to adjust the control.
• If the PEAK light is always on, decrease the audio gain by
turning the gain control counter-clockwise (while the vocalist
is singing or the musical instrument is being played) until the
PEAK light on the receiver flickers only occasionally.
• If the PEAK light is never on, increase the audio gain by turn-
ing the gain control clockwise (while the vocalist is singing or
the musical instrument is being played) until the PEAK light
on the receiver flickers only occasionally.
6. During the performance or presentation, slide the ON/MUTE
switch to the MUTE position when the system is not being
used.
7. When the performance or presentation is over, slide the trans-
mitter POWER ON/OFF switch to the OFF position to con-
serve battery power.
4
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TIPS AND TROUBLESHOOTING
Transmitter Battery Installation
1. Slide the transmitter ON/OFF switch to the OFF position.
2. Press down on the OPEN side of the battery compartment
cover, slide it back and flip it open, as shown in Figure 11.
Tips for getting the best performance
• Maintain a line-of-sight between the transmitter and receiver
antennas.
• Keep the receiver and antennas away from large metal ob-
jects.
• Avoid placing the receiver near computers or other RF gen-
erating equipment.
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• Point the receiver antennas straight up.
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• Avoid placing the receiver in the bottom of an equipment rack
unless the antennas are remotely located.
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Troubleshooting
Some common problems and their solutions are identified in the
table below. If you are unable to solve a problem, contact your
dealer.
FIGURE 11
3. Insert a fresh 9V alkaline battery into the battery compartment
as shown in Figure 11 (Duracell MN1604 recommended and
included with the system). A fresh 9V alkaline battery should
typically provide 18 hours of performance time. A fully
charged 8.4V NiCad battery should provide 2 hours of perfor-
mance time. When the red LOW BATTERY light on the trans-
mitter glows, you have 1 hour or less of useful battery life
remaining; change the battery at your first opportunity.
Solution
Problem
No sound; RF light(s)
not glowing.
• Make sure the transmitter
POWER switch is ON and the
receiver is plugged into a power
source.
IMPORTANT: Carbon-zinc and zinc-chloride batteries will not
provide adequate power and are not recommended.
4. Replace the battery cover.
• Check battery.
• Check receiver squelch setting.
• Check receiver antenna
connection(s).
Transmitter audio gain adjustment
• Make sure antennas are in line of
sight of transmitter.
The transmitter audio gain control has been factory preset to
provide satisfactory output. However, if the PEAK light on the T88
receiver is constantly on or never on, the transmit audio level may
require adjustment. Use the gain controls as follows to adjust the
equipment for the best sound quality.
No sound; RF and Audio Level • Turn up receiver audio VOLUME
meter lights glowing.
control.
• Check for proper connection
between receiver and karaoke
unit.
• Talk into microphone and observe
receiver audio level lights. If they
glow, the problem is elsewhere in
the sound system.
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Received signal is noisy or con- • Check battery.
tains extraneous sounds with
• Remove local sources of RF
transmitter on.
interference.
FIGURE 12
• If using a guitar or other
instrument, check connections.
• Two transmitters may be operating
on the same frequency. Locate
and turn one off.
To adjust the audio gain, locate the transmitter audio gain con-
trol and use the supplied screwdriver to adjust the control.
• If the PEAK light is always on, decrease the audio gain by
turning the gain control counter-clockwise (while the vocalist
is singing or the musical instrument is being played) until the
PEAK light on the receiver flickers only occasionally.
• Signal may be too weak.
Reposition antennas. If possible,
move them closer to transmitter.
• If the PEAK light is never on, increase the audio gain by turn-
ing the gain control clockwise (while the vocalist is singing or
the musical instrument is being played) until the PEAK light
on the receiver flickers only occasionally.
Noise from receiver with transmit- • Adjust receiver squelch control.
ter off.
• Remove local sources of RF
interference.
• Reposition receiver or antennas.
Momentary loss of sound as trans- • Reposition receiver and perform
mitter is moved around performing
area.
another “walkthrough” test and
observe the RF indicators. If audio
dropouts persist, mark these
“dead spots” in performing area
and avoid them during
performance.
5
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SPECIFICATIONS AND INFORMATION
Specifications
RF Carrier Frequency Range
169.445 to 216.000 MHz
Working Range
RF Sensitivity
-101 dBm typical
System Distortion (ref. ±15 kHz deviation, 1 kHz modulation)
0.7%
Power Requirements
T1, T2/14A: 9V alkaline battery (Duracell MN1604 recommend-
ed). 8.4V Nicad (rechargeable) are optional but not recom-
mended.
100 m (approximately 300 ft) under typical conditions.
Audio Frequency Response
T88: 12 Vdc (PS20, 120Vac; PS20E, 230 Vac Power Supply)
Current Drain
T1: 31 mA average (40 mA max)
T2/14A: 30 mA average (35 mA max)
T88: 160 mA average (195 mA max)
Operating Temperature Range
50 to 15,000 Hz, ±2 dB
Audio Output Level (±15 kHz deviation, 1 kHz tone)
1/4 inch connector (into 3 kꢁ load) -8.8 dBV (Hi Z)
Audio Connectors
Model:
T88
T1
-20°to 50°C (-4°to 122°F). NOTE: Battery characteristics may
Connector Type:
1/4-inch
phone plug
(female)
4-Pin miniature
connector
(TA4F)
limit this range.
Overall Dimensions
T1: 82.6 mm H x 63.5 mm W x 26.2 mm D
T2/14A: 241 mm L x 50.8 mm Dia.
T88: 44 mm H x 349 mm W x 194 mm D
Net Weight
Configuration:
active
unbalanced
active
unbalanced
Actual
Impedance:
3 kꢁ
18 kꢁ
with lavalier
T1: 79.5 g without battery
T2/14A: 294.8 g without battery
T88: 435 g
Maximum
Input Level:
-
12.2 dBu
-
Certification
T1, T2: Type-accepted under FCC Parts 90 and 74; IC certified
under TRC-78
T88: Approved under the Notification provision of
FCC Part 15
PS20 Power Supply: Conforms to safety standard UL1310.
Canada/CSA 22 2 No. 223.
PS20E Power Supply: Conforms to safety standard EN 60065
PS20UK Power Supply: Conforms to safety standard
EN 60065.
Maximum
Output Level:
0 dBu
Pin
Tip = hot
pin 1= ground
pin 2 = +5 V
pin 3 = audio
pin 4 = through
20 kꢁ resistor
to ground
Assignments:
sleeve = ground
Furnished Accessories
Phantom Power
Protection:
yes
-
-
Plastic Screwdriver ...........................................65A1659
Swivel Adapter (hand-held only)....................... WA370A
Anti-Roll Device (hand-held only) .....................66A8043
Voltage:
+5 V
Optional Accessories
Microphone Adapter Cable (T1)...........................WA310
4-Pin Female Mini Connector TA4F (T1) .............WA330
In-Line Audio Switch (T1).....................................WA360
1.8 Meter (6 ft.) Receiver-Mixer Cable.................WA410
6.1 Meter (20 ft.) Antenna Extension Cable.........WA421
T1 Pin Connections
MICROPHONE
ELEMENT
T1 MIC JACK BOARD
+5 V
500
2
2
27 pF
4
4
20K
500
AUDIO
Replacement Parts
3
1
3
1
27 pF
14A Cartridge with Grille.........................................R200
AC Adapter ................PS20 (120 Vac)/PS20E (230 Vac)
Grille (T2/14A)....................................................RK143G
Belt Clip (T1)...................................................53A8247A
1/4 Wave Antenna ............................................90A8380
GROUND
NOTE: LAVALIER MIC TIES PINS 3 AND 4 TOGETHER; GUITAR CABLE DOES NOT.
T88 Output Wiring (1/4 inch male plug to output connector)
SLEEVE
This symbol indicates that dangerous voltage constituting a
risk of electric shock is present within this unit.
TIP +
Gain Adjustment Range
T1: 40 dB
This symbol indicates that there are important operating and
maintenance instructions in the literature accompanying this unit.
T2/14A: 25 dB
RF Power Output
T1, T2/14A: 50 mW maximum (complies with FCC and IC
regulations)
6
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Licensing Information
Changes or modifications not expressly approved by Shure Inc.
could void your authority to operate the equipment. Licensing of
Shure wireless microphone equipment is the user's responsibility,
and licensability depends on the user's classification and applica-
tion, and on the selected frequency. Shure strongly urges the user
to contact the appropriate telecommunications authority concern-
ing proper licensing, and before choosing and ordering frequen-
cies other than standard frequencies.
Warranty Information
Shure Incorporated (“Shure”) hereby warrants that these
products will be free from defects in material 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. 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
postpaid to:
Shure Incorporated
Attention: Service Department
5800 W. Touhy Avenue
Niles, IL 60714-4608 U.S.A.
Telephone: 1-800-516-2525
For service outside the United States, return the product to any
authorized Shure Distribution Center.
All claims of defects or shortage should be directed to the above
address. Please furnish model number, operating frequency, and
date, place and proof of purchase (such as a copy of your sales re-
ceipt) to establish warranty. Your letter should include all pertinent
details including applicable model or part numbers and a brief de-
scription of the problem. Do not mail any units or parts to Shure
unless requested to do so by Shure's Service Department. Any re-
turned items must have prior authorization. Unauthorized returns
are delayed in handling; these delays can be avoided by contact-
ing Shure in advance and furnishing the necessary information.
Shure reserves the right to make design changes and product
improvements on any previously manufactured products. Shure
also reserves the right to ship new and/or improved products which
are similar to the form, fit and function of the originally ordered
products.
7
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United States, Canada, Latin America, Caribbean:
5800 W. Touhy Avenue, Niles, IL 60714-4608, U.S.A.
Phone: 847-600-2000 U.S. Fax: 847-600-1212 Intl Fax: 847-600-6446
Europe, Middle East, Africa:
Shure Europe GmbH, Phone: 49-7131-72140 Fax: 49-7131-721414
Asia, Pacific:
Shure Asia Limited, Phone: 852-2893-4290 Fax: 852-2893-4055
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