Set up the Shure® BLX14/P31 wireless headset system with an HDL300 or Dual HDL300 system

For use with Voice Amplification Mode in Nureva® Console
Last Updated: September 27th, 2021

The Shure BLX14/P31 wireless headset system is supported for use with HDL300 and Dual HDL300 systems that are equipped with Voice Amplification Mode.


 Required before you start:

    • This cable is purchased separately
    • See your audiovisual reseller to purchase this cable

NOTEThe connect module for the HDL300 and Dual HDL300 systems only supports mic level, mono and unbalanced audio inputs. 

Follow these steps to set up voice amplification:

Step 1: Connect the system

Setting up the HDL300 system

  • Connect the PoE cable (provided) to the RJ45-1 port on the connect module to the rear port on the microphone and speaker bar
  • Connect the power cable and power supply to the connect module and plug into a power source
  • Connect a computer to the connect module using the USB-A to USB-B cable (provided)

Connect the Shure BLX14/P31 wireless headset system

  • Using the unbalanced XLR male to female 3.5mm TRS adapter cable
    • Connect the cable to the XLR port on the back of the BLX4 headset receiver
    • Connect the cable to the Aux in port on the back of the connect module
    • Connect the BLX4 receiver into the power source using the power cable and power supply

Connection diagram


On the back of the transmitter open the plastic cover to the battery storage and adjust the gain setting to between 10:00 and 11:00 clock position as shown in the image below.


Pair the transmitter to the receiver

Ensure the headset is disconnected from the transmitter at this time
  • Turn on the transmitter
  • Set the group and channel according to the Shure set up instructions
    • See the section "Setting Transmitter Group and Channel"
  • Make sure other wireless microphones nearby are not using the same group and channel

Step 2: Adjust volume output on computer

Turn up or down the speaker volume

  • Windows® 10 computer
    • Locate and click on the speaker icon in the bottom right corner, on the taskbar
    • Move the slider control to adjust the volume as needed
    • This can be adjusted at any time
  • macOS® computer
    • Locate and click on the Volume control in the menu bar
    • Move the slider control to adjust the volume as needed
    • This can be adjusted at any time

Step 3: Adjust settings in Nureva Console

The instructions below are completed using Nureva Console cloud.  Voice Amplification Mode is not currently available in Nureva Console client.

Adjust Speaker settings

  • Navigate to Device settings, and open Speakers
  • Select Custom to adjust the Bass and Treble settings
    • Set Treble to 50
    • Set Bass to 50
    • If there is no distortion during testing, the Bass setting can be increased to meet individual preferences

Disable Sleep mode

  • Navigate to Device settings, and open Auxiliary ports
    • Ensure that Sleep mode is set to OFF by sliding the toggle to the left

Enable Voice Amplification Mode

  • Navigate to Device settings and open Voice Amplification Mode
  • Enable Voice Amplification Mode by sliding the toggle to the right
  • Click on Apply at the top of the Device settings dashboard


Adjusting the Aux in level

  • The Aux in setting should remain set at Mic level (Default)


Adjusting the Amplification level

  • Select the Amplification level that provides the best quality voice amplification

Step 4:   Test the amplification

Test the system

  • Connect your headset or earset to the transmitter
  • Stand approximately 1 to 2 meters in front of the HDL300 microphone and speaker bar
  • Have another person stand at the back of the room or where students will be seated in the classroom
  • Start talking to test the amplification level
  • If a UC&C client (e.g. Microsoft® Teams, Zoom) will be used, test the amplification setup with a remote person in an audio or video conference

Adjust amplification

  • Increase or decrease the master volume output from the computer to the correct volume for the room
  • Using the gain settings on the transmitter, fine-tune your wireless microphone to ensure you are happy with the audio output
  • See the Shure set up instructions
    • Locate the section "Adjusting Gain"

Explore additional information about Voice Amplification Mode.

Review Voice Amplification Mode FAQs.


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