Shure BLX14/SM31 Wireless Microphone System User Manual

Package Contents

• BLX4 Wireless Receiver
• BLX1 Bodypack Transmitter
• SM31FH Fitness Headset Condenser Microphone
• Power Supply
• Clothing Clip
• Windscreens
• User Guide

Initial Setup

1. Connect the power supply to the BLX4 wireless receiver and plug it into an electrical outlet.
2. Connect the receiver to a mixer or amplifier using the provided XLR or ¼" output connectors.
3. Turn on the BLX4 wireless receiver by pressing the power button.
4. Press the group button on the receiver to perform a group scan. The receiver will automatically select the clearest group and channel.
5. Install the included AA batteries into the BLX1 bodypack transmitter.
6. Turn on the bodypack transmitter by pressing the power button.
7. Set the group and channel on the transmitter to match the receiver by using the group and channel buttons.
8. The ready LED on the receiver should illuminate when properly connected, and RF bars will appear on the BLX4 display.
9. Adjust the gain on the transmitter as needed for optimal sound quality.
10. Attach the SM31FH fitness headset microphone to the BLX1 bodypack transmitter using the 4-pin TA4F (TQG) connector.
11. Secure the bodypack transmitter to your clothing or use a belt pouch (such as the Shure WA570A) to keep sweat away during fitness applications.

Operating Instructions

1. Place the SM31FH fitness headset microphone on your head, positioning the microphone close to your mouth for optimal sound quality.
2. Adjust the microphone boom and headband as needed for a secure and comfortable fit.
3. Turn on the BLX1 bodypack transmitter and ensure it is connected to the BLX4 wireless receiver.
4. Begin speaking or singing into the microphone. The sound will be transmitted wirelessly to the connected mixer or amplifier.
5. Adjust the gain on the bodypack transmitter as needed to achieve the desired volume and sound quality.
6. Turn off the bodypack transmitter and receiver when not in use to conserve battery life.

Troubleshooting Tips

• If you experience interference or signal dropouts, perform a group scan on the receiver to find a clearer frequency.
• Ensure the transmitter and receiver are set to the same group and channel for proper connectivity.
• Check the battery status LED on the bodypack transmitter and replace the batteries if needed.
• Maintain a line of sight between the transmitter and receiver for optimal signal strength and operating range.
• Avoid placing the receiver near other electronic devices or metal surfaces that may cause interference.

Frequently Asked Questions

What is the operating range of the Shure BLX14/SM31 Wireless Microphone System?

The system has an operating range of up to 300 feet (91 meters) line of sight.

How long does the battery life last on the BLX1 bodypack transmitter?

The bodypack transmitter can operate for up to 14 hours on two AA batteries (included).

Is the SM31FH fitness headset microphone suitable for singers?

The SM31FH microphone is designed for fitness instructors and may not provide the optimal sound quality for singers. However, some users have reported satisfactory results for singing applications.

Can I use this system with other Shure wireless microphones?

The BLX4 wireless receiver is compatible with other Shure wireless microphones, such as the handheld SM58 style Shure wireless microphones.

How do I prevent sweat from damaging the bodypack transmitter during fitness applications?

It is recommended to use a belt pouch, like the Shure WA570A, to keep sweat away from the bodypack transmitter during fitness applications.

Q: What is included in the Shure BLX14/SM31 Wireless Microphone System?
A: The system includes a BLX4 wireless receiver, BLX1 bodypack transmitter, SM31 fitness headset microphone, power supply, clothing clip, windscreens, and user guide.

Q: How long does the BLX1 wireless bodypack transmitter last on batteries?
A: The transmitter lasts for up to 14 hours on two AA batteries (included).

Q: How does the SM31FH fitness headset microphone connect to the bodypack transmitter?
A: The SM31FH microphone wires to the BLX1 bodypack via a 4-pin TA4F (TQG) connector.

Q: What is the operating range of the Shure BLX14/SM31 Wireless Microphone System?
A: The system has a 300 feet (91 m) operating range (line of sight).

Q: Is the BLX Wireless System easy to set up?
A: Yes, the system features quick and easy frequency matching and adjustable gain control for simple setup.

Q: Can additional Shure transmitters be added to this system?
A: Yes, additional transmitters can be added as long as they are set to a different channel during setup.

Q: Does this system come with a cable to connect to speakers?
A: No, it does not come with a cable as there are different ways to connect. You will need either an XLR to XLR mic cable or a 1/4" to 1/4" instrument cable, depending on your system.

Q: What frequency band should I choose for my area?
A: Use Shure's wireless frequency finder tool to determine which frequency band is best suitable for your area.

Q: How is the SM31FH fitness headset microphone worn?
A: The microphone can be worn under hair when hair is down or adjusted higher on the temple for support when wearing a hat.

Q: Is the BLX Wireless System compatible with a MacBook?
A: The system does not sync to anything. It is a transmitter and receiver pair that plugs into an analog audio input of some kind. It has 1/4" and XLR outputs.