Shure Microphone 27C8642 User Manual

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)  
 
ENGLISH  
DESCRIPTION  
INTRODUCTION  
The Twin ProWireless 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  
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2
3
4
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2
3
4
System Combinations  
The Twin Pro system includes one of the following three transmit-  
ter combinations:  
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• Two handheld microphone transmitters (includes two swivel  
adapters and two anti-roll devices)  
or  
• Two body-pack transmitters with lavalier microphones  
or  
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6
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• 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.  
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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.  
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ENGLISH  
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.  
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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.  
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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
 
ENGLISH  
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
 
ENGLISH  
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
 
ENGLISH  
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
 
ENGLISH  
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 kload) -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 kresistor  
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
 
ENGLISH  
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
 
SHURE Incorporated http://www.shure.com  
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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