1. Introduction
The Shure BLX2/SM58 is a wireless handheld transmitter featuring the legendary SM58 vocal microphone capsule. It is designed for seamless integration with Shure BLX Wireless Microphone Systems, offering reliable audio transmission for various applications. This manual will guide you through the essential steps for setting up, operating, and maintaining your BLX2/SM58 transmitter.
Image: Overview of a Shure BLX Wireless System, showing a receiver unit and a handheld microphone, illustrating the components working together.
2. What's in the Box
Your Shure BLX2/SM58 package includes the following items:
- BLX2 handheld wireless transmitter with integrated SM58 vocal microphone capsule
- Microphone clip
- 2x AA batteries
- User guide
3. Setup Guide
3.1. Receiver Placement
Place the BLX receiver in a location that maintains a clear line of sight to the transmitter. Avoid placing the receiver near large metal objects, other wireless devices, or sources of radio frequency interference. Optimal placement ensures stable signal reception.
Video: This video demonstrates the proper setup of a Shure BLX Wireless Receiver, including connecting power and audio outputs.
3.2. Connecting the Receiver
Connect the receiver to your sound system using either the XLR output for a balanced connection to a mixer or the 1/4" output for an unbalanced connection to a guitar amplifier or similar input. Ensure all connections are secure.
3.3. Frequency Band Selection
Before operation, ensure the wireless frequency band of your BLX2/SM58 transmitter (H9 Band: 512-542 MHz) is compatible with your BLX receiver and suitable for your geographical area. Refer to the Shure website's Wireless Frequency Finder for detailed information on available frequencies in your region.
Image: A chart illustrating wireless frequency band availability (H9, H10, H11, J11) across various US cities, emphasizing the importance of selecting the correct band for your location.
Video: This video provides guidance on how to choose the best channel for your Shure BLX Wireless System to avoid interference and ensure clear audio.
4. Operation
4.1. Powering On/Off
To power on the receiver, press the power button. The display will illuminate. To power on the BLX2/SM58 transmitter, press and hold the power button on the transmitter until the LED indicator lights up green.
4.2. Channel Scan and Synchronization
Ensure all transmitters are off before performing a channel scan on the receiver. Press the 'Group' button on the receiver to initiate an automatic scan for the best available group and channel. Once the receiver displays a stable group and channel, turn on your BLX2/SM58 transmitter. Open the battery compartment to access the group and channel buttons. Set the transmitter to the same group and channel as displayed on the receiver. The receiver's 'Ready' LED should turn solid green, indicating successful synchronization.
Video: This video demonstrates how to add an additional receiver to your Shure BLX Wireless System, including the synchronization process.
4.3. Audio Level Adjustment (Gain)
Test the audio by speaking into the microphone at typical performance levels. Observe the audio LED on the receiver. If the LED is consistently red, the audio input is too high (overload). To adjust the gain on the BLX2/SM58 transmitter, open the battery compartment. If the receiver audio LED is consistently red, press and hold the 'channel' button for 5 seconds until a dot appears next to '-10 dB' on the transmitter's display. This activates the -10 dB pad, reducing the input sensitivity. If the LED remains green, the levels are normal.
Video: This video guides you through performing a soundcheck with your Shure BLX Wireless System, including monitoring audio levels and adjusting gain.
5. Maintenance
5.1. Battery Installation and Replacement
The BLX2/SM58 transmitter operates on 2 AA batteries, providing up to 14 hours of power. To install or replace batteries, unscrew the bottom portion of the transmitter to reveal the battery compartment. Insert two fresh AA batteries, ensuring correct polarity. Close the compartment securely.
Image: A close-up view of the Shure BLX2 handheld transmitter with its lower casing removed, revealing the battery compartment with two AA batteries inserted.
5.2. Care and Cleaning
Regularly clean the microphone grille and body with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials. Store the transmitter in a dry, cool place when not in use to prolong its lifespan.
6. Troubleshooting
| Issue | Possible Solution |
|---|---|
| No audio output | Ensure receiver and transmitter are powered on and synchronized to the same group/channel. Check battery levels. Verify audio cables are correctly connected to the sound system. |
| Interference or static | Perform a channel scan on the receiver to find a clear frequency. Ensure clear line of sight between transmitter and receiver. Move away from other wireless devices or sources of RF interference. |
| Low audio level | Adjust the gain on the transmitter (deactivate -10 dB pad if active). Increase input gain on your mixer/sound system. |
| Distorted audio | Activate the -10 dB pad on the transmitter if the receiver's audio LED is consistently red. Reduce input gain on your mixer/sound system. |
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | BLX2/SM58 |
| Brand | Shure |
| Microphone Form Factor | Microphone System |
| Item Weight | 12.8 ounces |
| Product Dimensions | 11 x 3.3 x 5.3 inches |
| Power Source | Battery Powered (2 AA batteries) |
| Battery Life | Up to 14 hours |
| Material | Metal |
| Signal-to-Noise Ratio | 60 dB |
| Number of Channels | 1 (per receiver) |
| Frequency Response | 20 KHz |
| Connectivity Technology | UHF |
| Connector Type | Wireless |
| Polar Pattern | Unidirectional |
| Operating Range | Up to 300 feet (100m) |
8. Warranty and Support
The Shure BLX2/SM58 comes with a 2-YEAR WARRANTY. For technical support, warranty claims, or additional product information, please visit the official Shure website or contact their customer service department. Keep your purchase receipt as proof of purchase for warranty purposes.
