Shure W10BT User Manual

MODEL W10BT TRANSMITTER
The W10BT uses a standard 9-volt transistor-radio­type battery (alkaline recommended). This long-life bat­tery is available everywhere, and replacement is easily accomplished through a locking slide-off cover plate; no screws or hinges are used. A battery test switch and LED indicator provides information on battery condi-
tion.
The transmitter operates at a single, crystal-
controlled frequency in the VHF-FM band between 150 and 216 MHz. A total of 15 frequencies, computer­selected for interference-free operation, are readily available, and other frequencies can be ordered on a special basis. This means that a number of wireless microphone systems can be operated in a single sound installation, simultaneously and without intermodula­tion problems.
The W10BT has a maximum output power of 50 milliwatts, based on Federal Communications Commis­sion regulations. This means that the transmitter-to­receiver-antenna distance should be kept as short as possible, with about 150 meters (500 feet) considered a
maximum. Operation at greater distances -300 meters (1,000 feet) or more-is often accomplished, but the determining factors in each installation will be reflec­tions, obstacles and interference.
The transmitter is supplied with a zippered carrying storage bag and a small screwdriver for adjusting the transmitter gain.
DESCRIPTION (see Figure 1) ANTENNA: This is a flexible, 1/4-wave vertically
polarized antenna approximately 30 cm (12 in.) in length and permanently attached to the bottom surface of the transmitter. For proper operation, the antenna must be in the vertical position, not coiled or bundled.
BATTERY (not supplied): Only alkaline (Duracell MN1604 or equivalent) or heavy-duty nickel-cadmium (8.4-volt) transistor-radio-type batteries should be used. A fresh alkaline battery should provide approximately 8
hours of operation, and a fully charged nicad should pro­vide 1-1/2 to 2 hours.
BATTERY COMPARTMENT: Slide-off cover exposes the battery compartment.
BATTERY TEST Push-Button Switch: Permits checking the condition of the installed battery when the power switch is on. The Battery Test LED Indicator will fail to light if the battery is weak or dead (or if the Power switch is off). Note that if the battery is tested periodically dur­ing
an impending battery failure can be
use, detected: the LED will fail to light at 7.25 volts. At that time, approximately 1 hour of battery life remains (alkaline batteries only).
BELT CLIP: Permits convenient attachment to the user’s belt, waistband or other clothing.
GAIN HI/LO Slide Switch: Selects the High Gain posi­tion to boost the signal of low-output (low-impedance) microphones, or the Low Gain position for high-output
(high-impedance) microphones or musical instruments. Allows maximum modulation without clipping.
MICROPHONE JACK: This is a 4-pin, miniature, male
Tini Q-G connector designed to mate with Switchcraft TA4F or equivalent connectors. A built-in 20-kilohm load resistor provides proper matching for dynamic, ribbon or condenser microphones. Connector pin 2 supplies
+5-volt bias voltage for condenser microphone phan­tom powering. In addition to microphones with TA4F connectors, Shure has available an adapter cable with a standard XLR female connector for use with conven­tional microphones (WA310), and a musical instrument
222 HARTREY AVENUE, EVANSTON, ILLINOIS 60202-3696 U.S.A.
Copyright 1986, Shure Brothers Inc. 27A2313 (FH)
l TELEPHONE: (312)866-2200 l CABLE: SHUREMlCRO
Printed in U.S.A.
W10BT TRANSMITTER
FIGURE 1
adapter cable with a 1/4-in. phone plug on the equipment end (WA300).
MICROPHONE LEVEL Rotary Control: In conjunction with the Gain Hi/Lo switch, this control provides addi­tional audio level adjustment. A small screwdriver is supplied to make adjustments.
MICROPHONE ON/OFF Toggle Switch: Permits the user to “mute” the microphone without turning the transmitter off. This avoids the “pop” that may accom­pany power turn-on and turn-off, and generally prevents pickup of unwanted signals by the receiver.
POWER ON/OFF Slide Switch: Applies power to the transmitter circuitry. The switch is a low-profile type to minimize accidental turn-off.
SETUP AND CONNECTIONS
With the transmitter POWER ON/OFF Switch in the OFF position, slide the battery compartment access cover down and off the transmitter case. Insert a new 9-volt transistor-radio-type battery (Duracell MN1604 or equivalent) in the compartment. Observe the proper polarity: the large (negative) terminal in the large chan­nel and the small (positive) terminal in the small channel. Operation with a full charged, heavy-duty, 8.4-volt nickel­cadmium rechargeable battery is also permissible. IMPORTANT: Do not use a “conventional” g-volt-sized nickel-cadmium battery; its 7.2-volt output will operate the transmitter for about 15 minutes. Carbon-zinc bat­teries will also result in diminished operating life (about 1 hour).
Microphone Connections
The Shure WL83 lavalier condenser microphone or similar microphones with identical wiring and a Switch-
craft TA4F type connector can be plugged directly into the transmitter microphone jack. The WL83 will operate using the transmitter’s regulated +5 Vdc available on pin 2 (see Figure 2). Self-powered (battery) condenser microphones can be used with the transmitter on/y if they can be operated in an unbalanced mode (one side grounded). Other non-self-powered condenser microphones may require special wiring; contact Shure’s Service Department for further information. Phantom-powered condenser microphones will not operate with the W10BT.
A high- or low-impedance dynamic or ribbon microphone with pin 2 output can be directly connected to the transmitter using the supplied WA310 microphone adapter cable. The cable has a 3-socket XLR connector
TRANSMITTER CONNECTIONS AND
ACCESSORY WIRING
FIGURE 2
2
on the microphone end and a Switchcraft TA4F connec­tor on the transmitter end, and is wired for unbalanced low-impedance operation only (see Figure 2). Shure high­impedance microphones are not wired to operate with the transmitter. If a Shure high-impedance microphone must be used, pins 2 and 3 should be reversed (by qualified service personnel). Using a low-output, low­impedance dynamic lavalier microphone such as Shure’s SM11 may require raising the mixer input gain appreciably, which in turn may result in an increase in noise and signal “pumping.”
Instrument Connections
To connect the transmitter to a guitar or other musical instrument pickup, obtain an instrument adapter cable such as Shure’s WA300. This cable has a 1/4-inch phone plug on one end and a Switchcraft TA4F on the other (see Figure 2) and should function normally with any high-impedance instrument pickup.
Battery Check
Turn the transmitter power on and depress the BAT-
TERY TEST Switch. The adjacent LED should light, in­dicating adequate transmitter input voltage. If the LED does not light, the battery voltage has dropped below
7.25 volts and the battery should be replaced or recharg­ed (nicad only).
If the battery is tested periodically, the failure of the LED to light indicates approximately one hour of battery life left (alkaline only).
AUDIO LEVEL DISPLAY
FIGURE 3
High. For high sound pressure level (SPL) applications
such as loud singing or musical instruments, the preset transmitter level may be too high. To avoid this overload and potential distortion condition, use the supplied screwdriver to turn the transmitter MIC LEVEL Control down (counterclockwise; see Figure 4). This adjustment should be made under the expected operating condi­tions, that is, with the high SPL singer or musical instru­ment in use at the microphone. Turn the control down until the optimum (-7 to 0) readings are obtained.
SETTING GAIN LEVEL
Place the POWER Switch of the receiver in the ON
position. The green POWER LED will light.
Turn the transmitter POWER ON/OFF Switch on. Observe the receiver RF SIGNAL LEVEL indicator. With Shure W20R receivers, the signal yellow LED should be continually lit, indicating adequate RF signal strength for good transmission. If the LED continually flickers or does not light, consult the Troubleshooting section of the receiver manual.
With Shure W25DR receivers, one of the green LED segments should light, indicating adequate RF signal strength for good transmission. A yellow LED indication means less than optimum signal transmission and/or reception, and a red LED indicates less than satisfactory operation.
Turn the transmitter MIC ON/OFF Switch to the ON position. With a microphone connected to the transmit­ter, the receiver audio level display will now respond to varying sound levels.
SET the transmitter GAIN Switch as dictated by the type of input: HI for low-impedance microphones; LO for high-impedance microphones and instrument pickups.
Sound Pressure Levels
Normal. The transmitter MIC LEVEL Control has been
factory-set to provide optimum audio modulation at the receiver, as indicated by LED illumination in the -7 to 0 range (see Figure 3). Readings in this area will yield the highest dynamic range without overload and resulting distortion.
HIGH SPL GAIN ADJUSTMENT
FIGURE 4
Low. Low SPL applications such as soft-spoken in-
dividuals or conditions where the microphone must be at a greater-than-normal distance from the sound source, may require an increase in the transmitter gain setting. To correct for a low-level condition, turn the MIC LEVEL Control up (clockwise; see Figure 5) until a proper (-7 to
0) LED reading is obtained.
LOW SPL GAIN ADJUSTMENT
FIGURE 5
3
RECEIVER GAIN
The rear-panel receiver OUTPUT can be adjusted using the MICROPHONE OUTPUT LEVEL Control. In this way, the wireless system output can be made identical to that of a conventional wired microphone, avoiding extreme differences in input level settings. Turning the
MICROPHONE OUTPUT LEVEL Control counter­clockwise decreases the output level, and turning it clockwise increases the output.
OPERATION
1.
Turn on the transmitter and receiver POWER Switches.
2.
Make sure the transmitter MIC ON/OFF Switch is on.
3. Talk into the microphone (or play the connected
musical instrument) and observe the receiver display for proper audio and RF indications.
4.
Continue talking or playing and move around the per­forming area. In each area, observe the receiver displays and make sure the RF signal strength is adequate.
Normal operation is shown by steady illumination of the green RF SIGNAL LED on the Shure W20R receiver, or by illumination of at least one green LED of the RF SIGNAL LEVEL display on the W25DR receiver. Weak signals are evidenced by intermittent operation of the W20R LED and by illumination of the lower LEDs on the W25DR.
In most cases, the problem of weak RF signal strength
is also indicated by audible evidence: either continuous or intermittent, or noisy, distorted operation. The condition is generally caused by poor antenna location, RF signal blocking, or operation beyond the system capability. Refer to the Troubleshooting section of the receiver manual for
remedies.
Feedback-the annoying howl or squeal heard in the
sound system- is as much a problem in wireless
microphones as in wired mics. Checking microphone operation throughout the performing area will probably
uncover any locations that are prone to audio feedback.
If the problem cannot be solved by a slight lowering of the receiver output level or the associated amplifier gain,
relocation of the speakers or possibly professional equalization of the sound system is recommended.
signal dropout,
IMPORTANT
Every wireless microphone installation is a unique
situation, and can present a variety of problems. Never attempt a live performance without a “walkthrough” first. And if major changes (fur­niture, scenery, etc.) were made since the walkthrough, operation again.
check the wireless microphone
SPECIFICATIONS
RF Power Output
50 mW maximum; 30 mW typical
Modulation
54F3 ± 12 kHz deviation, 50 µsec pre-emphasis
Modulation Limiter
Internal compressor
Input Impedance
Actual: 16k (20k dc), pin 4 wired to pin 3 for WL83 microphone; 91k, pin 4 open for microphone or instru-
ment pickup
Gain Switch
High position . . . . . . . 0.0065 Vrms required for
100% modulation
Low position . . . . . . . . . 0.065 Vrms required for
100% modulation
Gain Adjustment Range
Low Position . . . . . . . . . . . . . . . . . . . . . . 20 dB
High Position . . . . . . . . . . . . . . . . . . . . . . . 30 dB
Antenna
Attached, 305 mm (12 in.), omnidirectional, flexible wire
Power
Battery Type . . . . . . . 9-volt alkaline (NEDA
1604A); 8.4-volt nicad op­tional
Battery Life . . . . . . . . . .
Current Drain . . . . . . . . 35 mA typical
6 to 8 hours typical (alkaline); 1.5 to 2 hours typical (8.4-volt nicad; per charge)
Dimensions
102 mm H x 69.8 mm W x 25.4 mm D (4 in. x 2-3/4 in. x 1 in.) (not including antenna, controls and belt clip)
Weight
113 grams (4 oz); 170 grams (6 oz) with battery
ANTENNA
The transmitter antenna is a permanently attached, flexible wire, 1/4-wave antenna. It has an omnidirectional pickup pattern (equally effective in all directions) and is
designed to operate in a vertically polarized mode. This
means that the antenna should hang downward during
operation; coiling or wadding it to minimize visibility will
reduce the system’s operating distance.
BATTERIES
Careful transmitter battery selection, installation, use and care will help avoid problems in wireless microphone use. The most dependable, long-lived bat­teries at this time are the manganese-alkaline, or alkaline, types. In addition to offering the longest ex­pected operating life, they are commonly available.
One small word of caution about alkaline batteries: they are not all the same size. Make certain the battery you buy will make contact inside the battery compart­ment.
Nickel-cadmium (nicad) batteries can save money through their rechargeability, but the tradeoff is in shorter expected life per charge. In addition, forgetting to recharge can be disastrous.
Another major consideration in nicads is that of operating voltage. The “heavy-duty” 8.4-volt nicads are satisfactory for transmitter use, but the “9-volt-size” nicads commonly found in stores are only 7.2 volts and will not provide satisfactory wireless performance.
4
Mercury batteries in the “9-volt-size” are also actually
8.4 volts. However, their discharge characteristics are such that they will yield between 10 and 15 hours of operation with the transmitter.
Carbon-zinc batteries are the least useful for transmit­ter operation. Their low cost is more than offset by their extremely short operating and shelf life. Although the “heavy-duty” (HD) carbon-zinc types offer better low­temperature performance and service capacity at
moderate to high current drain, they will not offer ap­preciably better transmitter performance than standard
carbon-zinc batteries.
Although battery operation is inhibited at low temperatures, storing batteries at low temperatures will increase their shelf life. They should be sealed in bags and, when ready for use, allowed to warm up to room temperature (never heated!). Cold-stored batteries should be used as soon as possible after bringing to room temperature.
Battery life is shortened by high-temperature storage such as on amplifiers or in vehicles exposed to direct sunlight.
RECOMMENDED RANGES
Alkaline
Temperature
Shelf Life (room 30 months temperature; to 80% of capacity)
0° to 38°C
(32° to 100°F) (40° to 130°F) (45° to 90°F) (-4° to 113°F)
Mercury Zinc
4° to 54°C 7° to 32°C
30 months 6 to 12 10 to 80 days
Carbon-
months
Nicad
-20° to 45°C
The battery should be removed if the transmitter malfunctions, or if it is to be stored for a long period. Most batteries have a protective jacket, but partly or
completely exhausted batteries are more prone to leakage.
Do not attempt to recharge replaceable (primary) bat-
teries using “chargers”, heat or other methods. This may cause leakage or explosion. Do not disassemble bat­teries or dispose of them in fire.
BATTERY TYPE
Alkaline
Mercury
Nickel-Cadmium
MANUFACTURER
& NO.
Bright Star 7590 Duracell MN1604 ESB A1604 Eveready 522 IEC 6LF22 NEDA 1604A Panasonic 6AM6 Radio Shack
23-553 Ray-0-Vac A1604 US. Military
BA3090 Varta 4022
Burgess H146X Duracell TR146X Eveready E146X NEDA 1604M Panasonic TR146 U.S. Military
BA1090/U
SAFT PS-9 Varta TR7/8
VOLTS
9.0
8.4
8.4
EXPECTED LIFE
6 to 7 hours
10 to 15 hours
1-1/2 to 2 hours per charge
Carbon-Zinc Duracell M1604
Carbon-Zinc (Heavy Duty)
Eveready 216 Ray-0-Vac 1604 Radio Shack
23-464
Duracell
M1604HD Eveready 1222 Ray-0-Vac D1604 Radio Shack
23-583
9.0
9.0
1 hour
1 hour
ACCESSORIES
The following Shure transmitter accessories are available through your Shure dealer. (Replacement parts can be ordered from Shure’s Service Department; infor­mation is available from Shure’s Service Department.)
MODEL WL83 LAVALIER CONDENSER MICROPHONE
- This is a tiny electret condenser microphone design­ed for high-quality sound reproduction in broadcasting, film and sound reinforcement applications. The WL83
plugs directly into the W10BT transmitter, and is sup­plied with a variety of mounting options.
MODEL WA300 INSTRUMENT CABLE - This is a 1.2m (4 ft), single-conductor, shielded cable with a 1/4-inch phone plug on one end and a Switchcraft TA4F on the other. It is used for connecting the W10BT transmitter to a guitar or other musical instrument pickup.
MODEL WA310 MICROPHONE CABLE - A 1.2m (4 ft), single-conductor, shielded cable with a 3-socket (female) XLR connector on one end and a Switchcraft TA4F on the other. The WA310 is designed to connect the W10BT to a low-impedance dynamic or condenser microphone for unbalanced operation.
MODEL WA330 MICROPHONE CONNECTOR - This TA4F miniature connector permits microphones such as the Shure SM10A or SM98 to be connected directly to the W10BT transmitter.
FCC CERTIFICATION
The Shure Model W10BT transmitter is Type-Accepted under Federal Communications Commission Parts 90 and 74. Licensing of Shure wireless microphone equip-
ment is the user’s responsibility, and licensability depends on the user’s classification and application, and on the selected frequency. Shure strongly urges the
user to contact the appropriate telecommunications authority before choosing and ordering frequencies other than factory-preset frequencies. This recommen­dation applies to both original equipment purchase and subsequent frequency modification by Shure.
WARRANTY SERVICE
If your Shure wireless microphone equipment should require servicing under the Shure warranty, please con­tact:
Shure Brothers Inc. Attention: Service Department 222 Hartrey Avenue
Evanston, Illinois 60202-3696 U.S.A.
Telephone: (312) 866-5730
Refer to receiver manual for details on warranty service.
5
Loading...