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BLX
Wireless System
Online user guide for the Shure BLX wireless system. Includes specifications, frequency response, setup, controls, and how to troubleshoot.
Version: 5.3 (2023-A)

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Summarization of Contents

Features
Receiver Front Panel
Details the front panel components of BLX4 and BLX88 receivers, including LEDs and displays.
BLX1 Transmitter Features
BLX1 LED Indicator
Explains the LED indicator on the BLX1 transmitter for power and battery status.
BLX1 Power Switch
Describes the power switch function on the BLX1 transmitter.
BLX1 Microphone Input
Identifies the 4-pin microphone input jack on the BLX1 transmitter.
BLX1 Antenna and Controls
Details the antenna, group/channel buttons, and LED display of the BLX1 transmitter.
BLX1 Battery Compartment
Describes the battery compartment of the BLX1 transmitter.
BLX1 Audio Gain Adjustment
Explains how to adjust the audio gain on the BLX1 transmitter.
BLX2 Transmitter Features
BLX2 Controls and Indicators
Details the LED indicator, power button, group/channel buttons, and LED display of the BLX2 transmitter.
BLX2 Identification and Battery
BLX2 Identification Cap
Describes the identification cap on the BLX2 transmitter.
BLX2 Battery Compartment
Describes the battery compartment of the BLX2 transmitter.
Setting Transmitter Group and Channel
Group (letter) Setting
Instructions for setting the group (letter) on the transmitter.
Channel (number) Setting
Instructions for setting the channel (number) on the transmitter.
Multiple System Setup
Setup for the First Receiver
Steps for setting up the first receiver in a multiple system configuration.
Setup for Additional Receivers
Steps for setting up subsequent receivers in a multiple system.
Manually Setting Receiver Group and Channel
Manual Group (letter) Setting
Manual procedure to set the receiver group (letter).
Manual Channel (number) Setting
Manual procedure to set the receiver channel (number).
Locking and Unlocking Controls
Transmitter Lock/Unlock
Procedure to lock and unlock controls on the transmitter.
Receiver Lock/Unlock
Procedure to lock and unlock controls on the receiver.
Getting Good Sound
Correct Microphone Placement
Guidance on optimal microphone positioning for sound quality.
Wearing the Headworn Microphone
Instructions for correctly wearing a headworn microphone.
Troubleshooting
No sound or faint sound
Solutions for issues with no or faint sound output.
Receiver LED screen off
Steps to resolve when the receiver LED screen is off.
Transmitter indicator LED flashing red
Solutions for a transmitter LED flashing red.
Troubleshooting (Continued)
Audio artifacts or dropouts
Solutions for audio artifacts or signal dropouts.
Distortion
How to resolve audio distortion issues.
Sound level variations
Adjusting gain for sound level variations.
Receiver/transmitter won't turn off
Solutions for when the receiver or transmitter cannot be turned off.
Specifications
System Working Range
Specifies the working range of the wireless system.
Audio Frequency Response
Details the audio frequency response of the system.
Total Harmonic Distortion
Provides the total harmonic distortion specification.
Dynamic Range
Specifies the dynamic range of the system.
BLX1 Specifications
BLX1 Audio Input Level
Specifies the audio input level for the BLX1 transmitter.
BLX1 Gain Adjustment Range
Details the gain adjustment range for the BLX1 transmitter.
BLX1 Input Impedance
Specifies the input impedance for the BLX1 transmitter.
BLX1 RF Transmitter Output
Details the RF transmitter output power for the BLX1.
BLX1 Dimensions and Weight
Provides dimensions and weight specifications for the BLX1.
BLX1 Power Requirements
Details the power requirements for the BLX1 transmitter.
BLX1 Battery Life
Specifies the battery life for the BLX1 transmitter.
BLX2 Specifications
BLX2 Audio Input Level
Specifies the audio input levels for the BLX2 transmitter.
BLX2 Gain Adjustment Range
Details the gain adjustment range for the BLX2 transmitter.
BLX2 RF Transmitter Output
Details the RF transmitter output power for the BLX2.
BLX2 Dimensions and Weight
Provides dimensions and weight specifications for the BLX2.
BLX2 Power Requirements
Details the power requirements for the BLX2 transmitter.
BLX4 Specifications
BLX4 Output Impedance
Specifies the output impedance for the BLX4 receiver.
BLX4 Audio Output Level
Details the audio output levels for the BLX4 receiver.
BLX4 RF Sensitivity
Specifies the RF sensitivity for the BLX4 receiver.
BLX4 Image Rejection
Details the image rejection specification for the BLX4 receiver.
BLX4 Dimensions and Weight
Provides dimensions and weight specifications for the BLX4.
BLX88 Specifications
BLX88 Output Impedance
Specifies the output impedance for the BLX88 receiver.
BLX88 Audio Output Level
Details the audio output levels for the BLX88 receiver.
BLX88 RF Sensitivity
Specifies the RF sensitivity for the BLX88 receiver.
BLX88 Image Rejection
Details the image rejection specification for the BLX88 receiver.
BLX88 Dimensions and Weight
Provides dimensions and weight specifications for the BLX88.
BLX88 Power Requirements
Details the power requirements for the BLX88 receiver.
Safety and Compliance
General Safety Precautions
Lists general safety instructions for operating the apparatus.
Certifications
Details the European Directives and CE marking compliance.
Product Information
European Representative Details
Contact information for the authorized European representative.
Regulatory Compliance Statements
Details FCC and ISED certifications and compliance.
LICENSING INFORMATION
Information on ministerial licenses required for operation in certain areas.
Information to the user (FCC)
FCC compliance statement regarding device operation and interference.
Interference and Precautions
Interference Correction Measures
Measures to take if the equipment causes radio or television interference.
Canada Warning for Wireless
Information regarding Canada's no-protection, no-interference basis for wireless devices.
Australia Warning for Wireless
Warning for Australian wireless device operation regarding frequency bands.

Table of Contents