Shure BLX24E/PG58 Technical manual

BLX
Wireless System
Online user guide for Shure BLX wireless system.
Version: 4 (2019-H)
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Table of Contents
BLXWireless System 3
IMPORTANT SAFETY INSTRUCTIONS 3
System Components 4
Quick Start Guide 4
Features 6
Front Panel 6
Back Panel 7
BLX1 7
BLX2 8
Single System Set Up 9
Setting Transmitter Group and Channel 10
Group (letter) 10
Channel (number) 10
Multiple System Setup 11
Manually Setting Receiver Group and Channel 12
Group (letter) 12
Channel (number) 12
Locking and Unlocking Controls 12
Transmitter (lock/unlock) 12
Receiver (lock/unlock) 12
Tips to Improve Wireless System Performance 12
Getting Good Sound 13
Correct Microphone Placement 13
Wearing the Headworn Microphone 13
Adjusting Gain 14
BLX1 14
BLX2 15
Batteries 15
Wearing the Bodypack Transmitter 16
Power Off 16
Removing and Installing Identification Caps 17
Troubleshooting 17
Specifications 18
Certifications 21
Important Product Information 21
LICENSING INFORMATION 22
Information to the user 22
Australia Warning for Wireless 23
Frequency Range and Transmitter Output Level 23
Frequencies for European Countries 24

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BLX
Wireless System
IMPORTANT SAFETY INSTRUCTIONS
READ these instructions.
KEEP these instructions.
HEED all warnings.
FOLLOW all instructions.
DO NOT use this apparatus near water.
CLEAN ONLY with dry cloth.
DO NOT block any ventilation openings. Allow sufficient distances for adequate ventilation and install in accordance
with the manufacturer’s instructions.
DO NOT install near any heat sources such as open flames, radiators, heat registers, stoves, or other apparatus (in
cluding amplifiers) that produce heat. Do not place any open flame sources on the product.
DO NOT defeat the safety purpose of the polarized or grounding type plug. A polarized plug has two blades with one
wider than the other. A grounding type plug has two blades and a third grounding prong. The wider blade or the third
prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replace
ment of the obsolete outlet.
PROTECT the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the
point where they exit from the apparatus.
ONLY USE attachments/accessories specified by the manufacturer.
USE only with a cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a
cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
UNPLUG this apparatus during lightning storms or when unused for long periods of time.
REFER all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any
way, such as power supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus,
the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
DO NOT expose the apparatus to dripping and splashing. DO NOT put objects filled with liquids, such as vases, on the
apparatus.
The MAINS plug or an appliance coupler shall remain readily operable.
The airborne noise of the Apparatus does not exceed 70dB (A).
Apparatus with CLASS I construction shall be connected to a MAINS socket outlet with a protective earthing connec
tion.
To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.
Do not attempt to modify this product. Doing so could result in personal injury and/or product failure.
Operate this product within its specified operating temperature range.

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This symbol indicates that dangerous voltage constituting a risk of electric shock is present within this unit.
This symbol indicates that there are important operating and maintenance instructions in the literature accom
panying this unit.
WARNING: Danger of explosion if incorrect battery replaced. Operate only with AA batteries.
System Components
Note: Your system comes with a combination of the following components.
BLX1 Bodypack Transmitter
BLX2 Handheld Transmitter (choice of SM58, BETA58A, or PG58)
BLX4 Wireless Receiver
BLX88 Dual Wireless Receiver
PS24 Power Supply
Lavalier microphone (choice of PG185, WL185 or WL93)
Headworn microphone (choice of PG30, SM31FH or SM35)
MX153 Earset microphone
Instrument microphone (BETA98H/C)
Guitar cable (WA302)
Quick Start Guide
Connect receiver to power source.
Connect receiver to mixer or amplifier. Hold power button to turn on.
Press group button on receiver to perform a group scan.

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Install batteries and turn on transmitter.
On the transmitter, set the group and channel to match the receiver. The audio LED on the receiver should illu
minate.
If setting up additional systems, leave the first transmitter and receiver on. For each additional receiver, manual
ly set the group to match the first receiver. Note: The receiver will automatically perform a channel scan to find
an available frequency after the group has been selected. Set the transmitter frequency to match the receiver.
If sound is too faint or distorted, adjust the gain accordingly.

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Features
Front Panel
BLX4
BLX88
①audio LED
Indicates strength of incoming audio signal: green for normal and red for overload.
②ready LED

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Green light indicates system is ready for use and receiving transmitter signal.
③LED Display
Displays group and channel setting.
④group and channel Buttons
Scan: Push and release group button to scan for an open group and channel.
Manual: Push and hold group button to select a group. Push channel button to select a channel in the current group.
⑤power Button
Push and hold to turn power on or off.
Back Panel
BLX4
BLX88
①DC Power Jack
②Adapter Cord Tie-Off
③XLR microphone output jack (MIC out)
④6.35 mm (1/4") instrument level output jack (instrument out)
BLX1
①LED Indicator
Displays power and battery status (see Transmitter LED Indicators).
②power Switch
Toggles power on or off.

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③4-Pin Microphone Input Jack (TA4 connector)
④Antenna
⑤group Button
Changes group setting.
⑥LED Display
Displays group and channel setting.
⑦channel Button
Changes channel setting.
⑧Battery Compartment
⑨Audio Gain Adjustment
Rotate to increase or decrease transmitter gain.
BLX2
①LED Indicator
Displays power and battery status (see Transmitter LED Indicators).
②power Button
Push to turn power on or off.
③group Button
Changes group setting.

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④channel Button
Changes channel and gain setting.
⑤LED Display
Displays group and channel setting.
⑥Identification Cap
⑦Battery Compartment
Transmitter LED Indicators
LED Indicator Status
Green Ready
Rapidly Flashing Red Controls locked
Solid Red Battery power low (less than 1 hour remaining*)
Flashing Red and shuts off Batteries dead (change batteries to power on transmitter)
*For alkaline batteries only. For rechargeable batteries, solid red means the batteries are dead.

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Single System Set Up
Before you begin, turn off all transmitters and turn on any equipment (other microphones or personal monitoring systems) that
could cause interference during the performance.
Press and release the group button on the receiver.
The receiver scans for the clearest group and channel.
Note: If you want to stop the scan, push the group button again.
Turn on transmitter and change the group and channel to match the receiver (See Setting Transmitter Group and Chan
nel).
Once the system is set up, perform an audio check and adjust the gain if necessary.
Setting Transmitter Group and Channel
Transmitter group and channel must be manually set to match the receiver.
Group (letter)
Press and release the group button on the transmitter to activate the display. Press the group button again and the dis
play flashes.
While the display is flashing, press the group button again to advance to the desired group setting.
Channel (number)
If channel needs to be changed, follow the same procedure using the channel button instead of the group button.
Note:
When the group and channel correctly match the receiver, the ready LED on receiver illuminates.
After manual setup, the transmitter alternately displays the group and channel setting for about two seconds.

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Multiple System Setup
Up to 12 systems can operate simultaneously (band and RF environment dependent).
Important: Set up each system one-at-a-time. Once a receiver and transmitter are tuned to the same group and channel, leave the transmitter powered on.
Otherwise, scans from the other receivers will not detect that channel as occupied. For the BLX88, be sure to setup both transmitters before progressing to the
next receiver.
Turn on any other equipment that could cause interference during the performance so it will be detected during the group and channel scans in the following
steps.
Before you begin system set up, turn all receivers ON and all transmitters OFF.
For the first receiver:
Perform a group scan.
This finds the group with the most clear channels.
Note: For the BLX88, the group scan sets up both receivers at the same time.
Turn on the first transmitter and change the group and channel to match receiver.
Leave the transmitter on and continue with the additional systems.
Note: If the selected group does not contain enough open channels, manually select group "d" when setting up larger systems.
For each additional receiver:
Use manual setup to change the receiver to match the group setting of the first receiver. Recall that each time the
group setting is changed, a channel scan is automatically done.
Turn on the transmitter and change the group and channel to match the receiver.
Leave the transmitter on and continue to the next system.
Once all receivers are set up, perform an audio check on all microphones.

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Manually Setting Receiver Group and Channel
The receiver group may need to be changed as part of a multiple system setup.
Group (letter)
Hold the group button on the receiver until the display begins to flash.
While the display is flashing, press the group button again to advance to the next group.
Note: Only the group setting will be displayed during the manual setup.
Once the desired group is reached, release the group button. The receiver automatically performs a channel scan.
Channel (number)
Always use a channel selected by the channel scan. However, if necessary, the channel can be set manually. Follow the same
steps above using the channel button instead of the group button.
Locking and Unlocking Controls
Lock system controls to prevent accidental setting changes or power off.
Transmitter (lock/unlock)
Turn the transmitter on. Hold the group button, then press the channel button for approximately 2 seconds. The LED indicator
rapidly flashes red when locked.
Receiver (lock/unlock)
Turn the receiver on. Simultaneously hold the group and channel button. The display flashes rapidly.
When locked, the display flashes rapidly if any key is pressed.
The BLX88 locks on both sides when locked from either side.
Tips to Improve Wireless System Performance
If you encounter interference or dropouts, try the following suggestions:
Choose a different receiver channel
Reposition the receiver so there is nothing obstructing a line of sight to the transmitter (including the audience)
Avoid placing transmitter and receiver where metal or other dense materials may be present
Move the receiver to the top of the equipment rack
Remove nearby sources of wireless interference, such as cell phones, two-way radios, computers, media players, Wi-Fi
devices, and digital signal processors
Charge or replace the transmitter battery
Keep transmitters more than two meters (6 feet) apart
Keep the transmitter and receiver more than 5 meters (16 feet) apart
During sound check, mark trouble spots and ask presenters or performers to avoid those areas

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Getting Good Sound
Correct Microphone Placement
Hold the microphone within 12 inches from the sound source. For a warmer sound with increased bass presence, move
the microphone closer.
Do not cover grille with hand.
Wearing the Headworn Microphone
Position the headworn microphone 13 mm (1/2 in.) from the corner of your mouth.
Position lavalier and headworn microphones so that clothing, jewelry, or other items do not bump or rub against the micro
phone.

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Adjusting Gain
Monitor the audio LED indicator on the receiver front panel when setting the transmitter gain.
Green: normal levels
Red: excessive sound levels (overload).
The red LED should only illuminate infrequently when you speak loudly or play your instrument loudly.
BLX1
Rotate the audio gain adjustment to increase (+) or decrease (−) the gain until desired level is reached.
For instruments, turn gain to minimum setting. For lavaliers, increase the gain as desired.

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BLX2
The BLX2 features two gain level settings, default and attenuated (-10 dB). The default setting is used for most situations. If the
receiver audio LED flickers red often, set the microphone to attenuated. Use the channel button to change the gain setting.
Hold down the channel button for 5 seconds.
A dot appears on the lower righthand corner of the LED display, which indicates −10 dB gain setting has been activat
ed.
To change the gain back to default, hold the channel button again for 5 seconds, or until the dot disappears.
Batteries
Expected life for AA batteries is up to 14 hours (total battery life varies depending upon battery type and manufacturer).
When the LED indicator turns red, it signifies "low battery" with approximately 60 minutes of remaining battery life.
For alkaline batteries only. For rechargeable batteries, solid red means the batteries are dead.
To remove batteries from the handheld transmitter, push them out through the opening in the microphone battery compartment.

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WARNING: Battery packs shall not be exposed to excessive heat such as sunshine, fire, or the like.
Wearing the Bodypack Transmitter
Clip the transmitter to a belt or slide a guitar strap through the transmitter clip as shown.
For best results, the belt should be pressed against the base of the clip.

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Power Off
Hold down the power button to power off the BLX2 or BLX4/88. To power off the BLX1, slide the power toggle switch to OFF.
Removing and Installing Identification Caps
The BLX2 is equipped with a black identification cap from the factory (dual vocal systems ship with additional gray cap).
To remove: Remove battery cover. Squeeze sides and pull off cap.
To install: Align the cap and click into place. Replace battery cover.
An Identification Cap Kit containing assorted colored caps is available as an optional accessory.
Troubleshooting
Issue Indicator Status Solution
No sound or faint sound
Receiver ready LED on
Verify all sound system connections or adjust gain as
needed (see Adjusting Gain)
Verify that the receiver is connected to mixer/amplifier
Receiver ready LED off
Turn on transmitter
Make sure the batteries are installed correctly
Perform transmitter setup (see Single System Setup)
Insert fresh batteries

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Issue Indicator Status Solution
Receiver LED screen off
Make sure DC adapter is securely plugged into electrical
outlet.
Make sure receiver is powered on.
Transmitter indicator LED
flashing red Replace transmitter batteries (see Changing Batteries).
Audio artifacts or dropouts Ready LED flickering or off
Change receiver and transmitter to a different group and/
or channel.
Identify nearby sources of RF interference, and shut
down or remove source.
Replace transmitter batteries.
Ensure that receiver and transmitter are positioned with
in system parameters
System must be set up within recommended range and
receiver kept away from metallic surfaces.
Transmitter must be used in line of sight from receiver for
optimal sound
Distortion Audio LED on receiver indi
cates overload (red) Reduce transmitter gain (see Adjusting Gain).
Sound level variations when
switching to different
sources
N/A Adjust transmitter gain as necessary (see Adjusting
Gain).
Receiver/transmitter won't
turn off LED/display flashing rapidly See Locking and Unlocking Controls.
Specifications
System
Working Range
91 m (300 ft) Line of Sight
Note: Actual range depends on RF signal absorption, reflection and interference.
Audio Frequency Response
50 to 15,000 Hz
Note: Dependent on microphone type
Total Harmonic Distortion
Ref. ±33 kHz deviation with 1 kHz tone
0.5%, typical

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Dynamic Range
100 dB, A-weighted, typical
Operating Temperature
-18°C (0°F) to 57°C (135°F)
Note: Battery characteristics may limit this range.
Polarity
Positive pressure on microphone diaphragm (or positive voltage applied to tip of WA302 phone plug) pro
duces positive voltage on pin 2 (with respect to pin 3 of lowimpedance output) and the tip of the high im
pedance 1/4-inch output.
BLX1
Audio Input Level
max -16 dBV maximum
min (0 dB) +10 dBV maximum
Gain Adjustment Range
26 dB
Input Impedance
1 MΩ
RF Transmitter Output
10 mW, typical
varies by region
Dimensions
4.33 in. X 2.52 in. X 0.83 in. (110 mm X 64 mm X 21 mm) H x W x D
Weight
2.6 oz. (75 g), without batteries
Housing
Molded ABS
Power Requirements
2 LR6 AA batteries, 1.5 V, alkaline
Battery Life
up to 14 hours (alkaline)
Audio Input Level
0dB -20 dBV maximum

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-10dB -10 dBV maximum
Gain Adjustment Range
10 dB
RF Transmitter Output
10 mW, typical
varies by region
Dimensions
8.82 in. X 2.09 in. (224 mm X 53 mm) L x Dia.
Weight
7.7 oz. (218 g) without batteries
Housing
Molded ABS
Power Requirements
2 LR6 AA batteries, 1.5 V, alkaline
Battery Life
up to 14 hours (alkaline)
BLX4 & BLX88
Output Impedance
XLR connector 200 Ω
6.35 mm (1/4") connector 50 Ω
Audio Output Level
Ref. ±33 kHz deviation with 1 kHz tone
XLR connector –27 dBV (into 100 kΩ load)
6.35 mm (1/4") connector –13 dBV (into 100 kΩ load)
RF Sensitivity
-105 dBm for 12 dB SINAD, typical
Image Rejection
>50 dB, typical
Dimensions
BLX4 1.57 in. X 7.40 in. X 4.06in. (40 mm X 188 mm X 103 mm) H x W x D
BLX88 1.50 in. X 12.13 in. X 3.98in. (38 mm X 308 mm X 101 mm) H x W x D