Shure LX Wireless System Manuale utente

LX Wireless System

User Guide

27D8654 (Rev. 6)

Printed in U.S.A.

LX Wireless System

READ ME FIRST!

To get your system up and running in just a few minutes, follow the simple in-

structions on this page. For more detailed information, refer to the sections of

this guide that apply to your system.

RECEIVER CONNECTIONS

1. Attach the antennas to the receiver antenna connectors.

2. Connect the AC power adapter to the receiver power connector; then plug it into an

ac electrical outlet.

3. Connect the receiver audio output to the sound system, using either a low- or

high-impedance audio cable.

TRANSMITTER CONNECTIONS

1. Open the transmitter battery compartment and insert a fresh 9-volt alkaline battery.

Observe proper battery polarity ( “+/–”).

2. If you are using a body-pack transmitter, connect the microphone or WA302 instru-

ment cable to the 4-pin connector on the transmitter.

OPERATING THE SYSTEM

1. Press the receiver POWER switch. The green POWER light on the receiver

illuminates.

2. Set the transmitter PWR/OFF switch to PWR and the ON/MUTE switch to ON. One

of the three lights on the transmitter illuminates, indicating both that the transmitter

is on and the amount of battery life remaining. Two sets of five RF level lights on

the receiver will also glow to indicate the strength of the received signal. The more

lights glowing, the stronger the signal.

3. Have someone talk or sing into the microphone, or play the musical instrument

connected to the transmitter. The audio level will be indicated as follows:

• Green lights (3) glowing indicates normal operation.

• Amber light glowing indicates approaching audio overload (should only occur

during loud signals).

• Red light glowing steadily indicates audio overload. If this happens, reduce the

transmitter gain until it flickers only during the loudest signals. Refer to the

Transmitter Audio Gain Adjustment section of this guide.

4. Adjust the receiver LEVEL control until the output level is compatible with the mixer

or amplifier input. In most cases, this control should be set fully clockwise.

YOU ARE NOW READY TO PERFORM!

IMPORTANT:Every wireless microphone installation is a unique situation,

and can present a variety of problems. Never attempt a live performance

without first conducting a “walkthrough” test of the system in the performing

area. If major changes (additional wireless systems or intercoms, relocation

of scenery, etc.) have been made since the last walk-through test, check the

wireless system again-as close to performance time as possible.

English

TABLE OF CONTENTS

TABLE OF CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

SYSTEM COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

SYSTEM FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

LX1 BODY-PACK TRANSMITTER FEATURES, CONTROLS

AND INDICATORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

LX2 HANDHELD MICROPHONE-TRANSMITTER

FEATURES, CONTROLS AND INDICATORS . . . . . . . . . . . . . . . . . . . . .6

LX3 RECEIVER FEATURES, CONTROLS AND INDICATORS . . . . . . .7

LX4 DIVERSITY RECEIVER FEATURES, CONTROLS

AND INDICATORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

RECEIVER MOUNTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

RECEIVER CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

TRANSMITTER SETUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

OPERATING LX1 BODY-PACK SYSTEMS . . . . . . . . . . . . . . . . . . . . . .14

OPERATING THE LX2 HAND-HELD SYSTEM . . . . . . . . . . . . . . . . . . .15

GAIN AND SQUELCH ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . .16

TIPS FOR ACHIEVING OPTIMUM PERFORMANCE . . . . . . . . . . . . . .17

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

LICENSING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

LX Wireless System

SYSTEM COMPONENTS

LX WIRELESS MICROPHONE SYSTEM COMPONENTS

FIGURE 1

Your LX Wireless Microphone System features a MARCAD®fixed frequency diversi-

ty receiver operating in the VHF band between 169 and 240 MHz. Up to 12 LX wireless

systems can be operated simultaneously in a single installation. Each LX system in-

cludes:

•

LX1

Body-Pack Transmitter, with your choice of instrument cable or micro-

phone,

•

LX2

Hand-Held Microphone-Transmitter with your choice of interchangeable

microphone heads:

-SM58

®cardioid dynamic microphone

- BETA 58®supercardioid premium dynamic microphone

- SM87 supercardioid condenser microphone

- BETA 87 supercardioid premium condenser microphone

and one of the following half-rack size receivers:

•

LX3

Receiver

•

LX4

Diversity Receiver

- Both single and dual rack-mounting hardware

- One antenna (LX3 systems) or two antennas (LX4 systems)

- One of the following ac power adapters: PS40,PS40E, or PS40UK.

RECEIVER

RF AUDIO

SQUELCH LEVEL POWER

WIRELESS

LEVEL POWER

RF A RF B AUDIO

SQUELCH

DIVERSITY

MARCAD

LX1

LX2

LX3

LX4

English

SYSTEM FEATURES

Shure LX Wireless Systems offer a number of exceptional features, including:

•

Exclusive Shure MARCAD

Circuitry (LX4).

MARCAD (MAximum Ratio Com-

bining Audio Diversity)

circuitry constantly monitors signals from both receiver

sections and combines them to create a single output signal. The result is im-

proved reception and exceptional freedom from dropouts.

•

Half-Rack Receiver Size.

The LX3 and LX4 receivers interface with the HR

(half-rack) format, and are supplied with both single and dual rack-mount hard-

ware. An optional WA503 accessory kit lets you front-mount antennas.

•

Power/Battery Fuel Gauge.

The LX1 and LX2 transmitters include a three-light

gauge that indicates both “power on” and the amount of battery life remaining

(see page 12).

•

Dual RF Level Meters (LX4).

Instead of a conventional single RF meter, the

LX4 receiver has two meters, one for each antenna. The dual meters indicate

received signal strength at each antenna, and make it easier to identify and trou-

bleshoot RF “dead spots.”

•

Audio Metering.

A five-light audio meter helps to optimize transmitter gain set-

ting and lets you monitor audio level during operation.

•

True Guitar Sound.

Guitar players demanding the highest degree of sound

quality and reliability will appreciate the low noise and uncolored sound of the

LX Wireless System.

•

Noise Squelch.

This circuit analyzes signal

quality

instead of signal

strength

This virtually eliminates the possibility of annoying noise bursts coming through

your receiver.

•

Body-Pack Transmitter Belt Clip.

The belt clip has a wider contact surface for

a better grip, and firmly holds thinner, more slippery materials. It can be re-

moved or inverted for special positioning.

•

Grip/Switch Cover Accessory.

The unbreakable WA555 grip/switch cover ac-

cessory, supplied with all LX2 hand-held microphone-transmitters, prevents ac-

cidental movement of the power and mute switches and provides a “grip” feel.

•

Compact Power Adapter.

The supplied ac power adapter incorporates small,

in-line transformers that save space on ac power strips. It also has mounting

tabs so it can be secured to any surface, as well as locking dc power connectors

to prevent accidental disconnection from the receiver.

LX Wireless System

LX1 BODY-PACK TRANSMITTER FEATURES, CONTROLS

AND INDICATORS

LX1 BODY-PACK TRANSMITTER FEATURES, CONTROLS AND INDICATORS

FIGURE 2

Antenna. A flexible wire antenna is permanently attached to the bottom of the LX1

body-pack transmitter. For best operation, the antenna must hang in the vertical

position, and should not be coiled or bundled.

Battery Compartment. Hinged cover on bottom surface exposes the battery.

Refer to the Body-Pack Transmitter Battery Installation section.

Audio Gain Control. Allows audio level adjustment to accommodate various

sound sources (e.g., singing, speaking, or playing an instrument). A small screw-

driver is supplied to make adjustments (see the Setting Audio Level section).

Input Jack. This is a Mini- connector (TA4F) that provides connection with a vari-

ety of lavalier and headset microphone cables, and the Shure WA302 instrument

adapter cable.

Power/Battery Fuel Gauge. When the Power switch is turned to the PWR posi-

tion, one or two of the three lights on the transmitter illuminates, indicating power to

the unit. The color of the glowing light(s) indicates the amount of battery life

remaining (see page 12).

Belt Clip. Allows the transmitter to be easily worn on a belt, waistband or guitar

strap.

Mic On/Mute Switch. “Mutes” the transmitter to prevent unwanted sounds from

being picked up by the receiver without turning the transmitter off.

Power Switch. Turns transmitter power on and off.











English

LX2 HANDHELD MICROPHONE-TRANSMITTER

FEATURES, CONTROLS AND INDICATORS

LX2 MICROPHONE-TRANSMITTER FEATURES, CONTROLS, AND INDICATORS

FIGURE 3

Grille. Protects the microphone cartridge and helps reduce breath sounds and

wind noise. The grilles for the various microphone heads differ in appearance.

Power Switch. Turns transmitter power on and off.

Power/Battery Fuel Gauge. When the Power switch is turned to the PWR posi-

tion, one or two of the three lights on the transmitter illuminates. The color of the

glowing light(s) indicates the amount of battery life remaining (see page 12).

Mic On/Mute Switch. “Mutes” the transmitter to prevent unwanted sounds from

being picked up by the receiver without turning the transmitter off.

Audio Gain Control. Provides audio level adjustment to accommodate different

sound sources (see page 16).

Battery Cover. Removable cup hides battery and audio gain control.













LX Wireless System

LX3 RECEIVER FEATURES, CONTROLS AND INDICATORS

LX3 RECEIVER CONTROLS, FEATURES, AND INDICATORS

FIGURE 4

RF Presence Indicators. Glows amber when the antenna is receiving usable RF

(radio frequency) signals.

Audio Level Indicators. Five lights glow to indicate audio signal strength. Green

lights indicate normal operation. An amber light indicates approaching overload

condition. A red light indicates excessive audio levels.

Squelch Control. Sets the point at which the receiver “mutes” when the transmit-

ter signal becomes noisy, weak or fails. This control is factory-set at the 12 o'clock

position to provide optimal operation in most applications.

Audio Output Level Control. Lets you adjust output level to match the input level

requirements of a mixer or amplifier. In most situations, this control should be set

fully clockwise.

Power On Indicator. This green light glows to indicate that the Power switch is on

and power is applied to the receiver.

Power On/Off Button. Turns the receiver on and off.

Output Connector. Quarter-inch phone jack provides unbalanced auxiliary level

(high-impedance) output.

Power Jack: Accepts power from the supplied AC adapter, or from any filtered 15

to 18 Vdc (400 mA minimum) supply. It will also accept the dc power cord from a

Shure WA405 Antenna Power/Distribution System.

Antenna Connector. UHF-type connector provides connection to the supplied

1/4-wave antenna or to coax cable used with a remote antenna. They also provide

connection to the optional Shure WA421 remote antenna cable kit used with

optional WA380 telescoping and WA490 cable-type 1/2-wave antennas.

WIRELESS

RECEIVER

RF AUDIO

SQUELCH LEVEL POWER

ANT

OUTPUT

HIZ POWER

12.5 – 18.9 VDC

FRONT

REAR







English

LX4 DIVERSITY RECEIVER FEATURES, CONTROLS

AND INDICATORS

LX4 DIVERSITY RECEIVER FEATURES, CONTROLS AND INDICATORS

FIGURE 5

Diversity Signal Indicators for A and B Antennas. These lights glow amber

when A, B, or both antennas are receiving usable RF (radio frequency) signals.

RF Level Indicators. Five lights per antenna glow to indicate RF signal strength.

The more lights that glow, the stronger the received signal. If none of these lights

glows, no signal is being received.

Audio Level Indicators. Five lights glow to indicate audio signal strength. Green

lights indicate normal operation. An amber light indicates approaching overload

condition. A red light indicates excessive audio levels.

Squelch Control. Sets the point at which the receiver “mutes” when the transmit-

ter signal becomes noisy, weak or fails. This control is factory-set at the 12 o'clock

position to provide optimal operation in most applications.

Audio Output Level Control. Lets you adjust output level to match the input level

requirements of a mixer or amplifier. In most situations, this control should be set

fully clockwise.

Power On Indicator. This green light glows to indicate that the Power switch is on

and power is applied to the receiver.

Power On/Off Button. Turns the receiver on and off.

Antenna Connectors. UHF-type connectors provide connection to the supplied

1/4-wave antennas or to coax cable used with remote antennas. They also provide

connection to the optional Shure WA421 remote antenna cable kit used with

optional WA380 telescoping and WA490 cable-type 1/2-wave antennas.

Output Connectors. XLR connector provides balanced low-impedance mic level

or line-level output. Quarter-inch phone jack provides unbalanced auxiliary level

(high-impedance) output.

쐅Mic/Line Slide Switch: Controls output of balanced XLR connector. It can be set

for microphone (–20 dBV maximum) or line-level (+0 dBV maximum).

쐈Power Jack: Accepts power from the supplied ac adapter, or from any filtered 15

to 18 Vdc (400 mA minimum) supply. It will also accept the dc power cord from a

Shure WA405 Antenna Power/Distribution System.

POWER

MARCAD

DIVERSITY

RF A RF B AUDIO

SQUELCH LEVEL

12.5 –18.9 VDC

ANTANT

OUTPUTS

HI Z BAL

MIC LINE

POWER











쐅쐈

LX Wireless System

RECEIVER MOUNTING

SINGLE RACK-MOUNTED RECEIVER (FIGURE 6)

If the receiver is to be located on a table or other horizontal surface, attach the four

adhesive bumpers to the bottom corners of the receiver. If the receiver is to be mounted

in an audio equipment rack, identify the rack-mount kits supplied with your system and

follow the appropriate assembly directions below.

1. Remove two screws from each side of the receiver.

2. Position the large mounting brackets over the holes on the sides of the receiver

and secure them to the receiver with the screws removed in Step 1.

3. If you are not going to front mount the antennas with a Shure WA503 Front Mount

Conversion Kit, insert the plastic plugs into the holes in the brackets.

4. Secure the assembly to a standard audio equipment rack with four screws.

SINGLE RACK-MOUNTED RECEIVER

FIGURE 6

DOUBLE RACK-MOUNTED RECEIVERS

1. Remove the two screws on the outer side of each receiver.

2. Position the small mounting brackets over the holes on the outer side of each

receiver, and secure them with the screws removed in Step 1.

3. Remove the screws on the inner side of each receiver.

4. Position two link bars over the holes and secure them with the screws removed in

Step 3. For the receiver on the left, the link bar should be positioned so that its

threaded hole is toward the front of the receiver. For the receiver on the right, the

link bar should be positioned so that its threaded hole is toward the rear of the

receiver.

DOUBLE RACK-MOUNTED RECEIVERS

FIGURE 7

5. Place the two receivers next to each other so that the threaded holes in the link

bars line up, one on top of the other.

6. Fasten the receivers together by inserting a small screw from the top into the

threaded hole at the front of the link bar. Then insert the other screw from the bot-

tom into the threaded hole at the rear of the link bar.

7. Secure the assembly to a standard audio equipment rack, using four screws.

LINK BARS

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