Introduction
The Shure BLX4 Single Channel Receiver is an integral component of the BLX Wireless Systems, designed to provide professional-quality sound with simple setup and an intuitive interface. This receiver is ideal for small venues and various audio applications, offering reliable wireless freedom. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your BLX4 receiver.
What's in the Box
- BLX4 Single-Channel Receiver
- Power Supply
- User Guide
- Free 2-Year Warranty (included)
Setup
Setting up your Shure BLX4 receiver is designed to be quick and straightforward. Ensure you have a compatible Shure BLX series transmitter (BLX1 or BLX2) that matches the H11 frequency band (572-596 MHz) of your receiver.
Connecting the Receiver
- Power Connection: Connect the provided power supply to the receiver's power input and plug it into an electrical outlet.
- Audio Output: Connect the receiver's audio output (XLR or 1/4-inch instrument out) to your audio mixer or amplifier.
- Antennas: Ensure the antennas are properly attached and positioned for optimal signal reception.
Frequency Selection
Before purchasing and setting up, verify that the H11 wireless frequency band (572-596 MHz) is suitable for your area. The BLX4 receiver features a user-friendly interface for automatic frequency scanning to find a clear channel.

Image: Shure Wireless Frequency Selection Chart. This chart displays available frequency bands (H9, H10, H11, J11) across various US cities, indicating which bands are clear for use in specific locations. The H11 band is highlighted for certain areas.
Video Guide: How to Setup a Receiver
Video: This video from Shure Incorporated demonstrates the step-by-step process of setting up a Shure BLX Wireless Receiver, including power and audio connections, and basic configuration.
Operating Instructions
The BLX4 receiver is designed for ease of use, allowing you to focus on your performance.
Front Panel Controls and Display

Image: A close-up view of the Shure BLX4 receiver's front panel, showing the power button, group and channel selection buttons, and the LED display for audio and ready indicators.
- Power Button: Press to turn the receiver on or off.
- Group/Channel Buttons: Use these buttons to manually select or automatically scan for available frequency groups and channels.
- Audio LED: Indicates audio signal presence and level.
- Ready LED: Illuminates when the receiver is synchronized with a transmitter.
Back Panel Connections

Image: The back panel of the Shure BLX4 receiver, displaying the power input, XLR audio output, and 1/4-inch instrument output ports, along with antenna connectors.
- Power Input: Connects to the external power supply.
- MIC OUT (XLR): Balanced audio output for connecting to a mixer's microphone input.
- INSTRUMENT OUT (1/4-inch): Unbalanced audio output for connecting to an instrument amplifier or mixer line input.
Video Guide: Receiver Overview
Video: This Shure Incorporated video provides a general overview of the BLX Wireless Systems, highlighting key features and components, including the receiver's role.
Maintenance
To ensure the longevity and optimal performance of your Shure BLX4 receiver, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the exterior of the receiver. Avoid using harsh chemicals or abrasive materials.
- Storage: Store the receiver in a cool, dry place away from direct sunlight and extreme temperatures when not in use.
- Cable Management: Ensure all cables are neatly organized and not under strain to prevent damage to connectors and ports.
- Antenna Care: Handle antennas carefully to avoid bending or breaking.
Troubleshooting
If you encounter issues with your BLX4 receiver, consider the following common troubleshooting steps:
- No Audio: Check all cable connections (power, audio output). Ensure the receiver and transmitter are powered on and synchronized to the same frequency. Verify the audio input on your mixer/amplifier is active.
- Interference/Dropouts: Perform an automatic frequency scan on the receiver to find a clear channel. Ensure the receiver antennas are unobstructed and properly positioned. Check for other wireless devices operating on similar frequencies in the vicinity.
- Weak Signal: Reduce the distance between the transmitter and receiver. Ensure fresh batteries are in the transmitter.
- Transmitter Not Linking: Ensure the transmitter is powered on and within range. Follow the synchronization steps in your transmitter's manual to link it with the receiver.
Video Guide: How to Add a Receiver
Video: This Shure Incorporated video demonstrates the process of adding and synchronizing an additional receiver to an existing BLX Wireless System, which can be helpful for troubleshooting connectivity.
Specifications
| Feature | Detail |
|---|---|
| Item Weight | 2.3 pounds |
| Product Dimensions | 13.5 x 4 x 12 inches |
| Item Model Number | BLX4=-H11 |
| Date First Available | April 1, 2020 |
| Color | Black |
| Compatible Devices | Speaker |
| Connector Type | XLR Connector |
| Size | Standard |
| Power Source | Battery Powered (for transmitter, receiver uses power supply) |
| Connectivity Technology | XLR |
| Controller Type | Push Button |
| Audio Output Mode | Stereo |
| Surround Sound Channel Configuration | 2 Channel |
Warranty and Support
Your Shure BLX4 Single Channel Receiver comes with a Free 2-YEAR WARRANTY, ensuring peace of mind and reliable performance.
For further assistance, technical support, or to access additional resources, please visit the official Shure website or contact their customer service. You can find detailed FAQs, product registration, and service center information on their support pages.
Online Resources: www.shure.com





