1. Introduction
This manual provides instructions for the Shure BLX24/PG58 Wireless Microphone System. This system is designed for vocal applications in small venues, offering wireless audio transmission with a PG58 handheld microphone and a single-channel receiver. The BLX system is engineered for straightforward setup and reliable performance.
Figure 1: Shure BLX24/PG58 Wireless Microphone System
2. What's in the Box
The Shure BLX24/PG58 Wireless Microphone System package includes the following components:
- BLX4 Single-Channel Receiver
- Power Supply for BLX4 Receiver
- BLX2 Handheld Wireless Transmitter with integrated PG58 Vocal Microphone Capsule
- Microphone Clip
- 2x AA Batteries
- User Guide
3. System Components
3.1 BLX4 Single-Channel Receiver
The BLX4 receiver processes the wireless signal from the transmitter and outputs it to an audio system. It features controls for group and channel selection, and indicators for audio and ready status.
Figure 2: BLX4 Receiver Front Panel
Figure 3: BLX4 Receiver Rear Panel with connection ports
3.2 BLX2 Handheld Wireless Transmitter with PG58 Microphone
The BLX2 transmitter integrates a PG58 vocal microphone capsule, providing a robust and clear audio input. It operates on AA batteries and transmits the audio signal wirelessly to the BLX4 receiver.
Figure 4: BLX2 Handheld Transmitter with PG58 Microphone
4. Setup
4.1 Wireless Frequency Band Selection
Before setup, ensure the H9 band (512-542 MHz) is suitable for your geographical location to avoid interference. Consult the Shure Wireless Frequency Finder for detailed regional compatibility.
Figure 5: Wireless Frequency Selection Guide for various regions
4.2 Battery Installation (Transmitter)
- Unscrew the bottom cap of the BLX2 handheld transmitter.
- Insert two AA batteries, observing correct polarity.
- Securely reattach the bottom cap.
4.3 Receiver Connection
- Connect the provided power supply to the BLX4 receiver's power input and to an AC outlet.
- Connect the receiver's audio output (XLR or 1/4-inch instrument out) to your mixer or audio system using an appropriate cable.
4.4 Transmitter-Receiver Pairing
The BLX system is designed for quick synchronization. Follow the instructions in the included user guide to pair the transmitter with the receiver. This typically involves selecting a group and channel on the receiver, then synchronizing the transmitter to the same settings.
5. Operation
5.1 Power On/Off
- To power on the receiver, press the power button on the front panel.
- To power on the transmitter, press and hold the power button on the microphone handle until the indicator light illuminates.
- To power off, repeat the respective steps.
5.2 Group and Channel Selection
The BLX system allows selection of groups and channels to find a clear frequency. Refer to the receiver's front panel (Figure 2) for group (A-Y) and channel (0-9) buttons. Adjust these settings to match the transmitter for optimal performance.
5.3 Performance Characteristics
The system operates with a range of up to 300 feet (100 meters) under optimal conditions. BLX transmitters provide up to 14 hours of operation from a single pair of AA batteries. The system supports up to 12 channels per frequency band, depending on regional and environmental factors.
Figure 6: Key Performance Features
6. Maintenance
6.1 Cleaning
- Wipe the receiver and transmitter surfaces with a soft, dry cloth.
- Do not use abrasive cleaners or solvents.
- Periodically clean the microphone grille to prevent debris buildup.
6.2 Battery Care
- Replace AA batteries in the transmitter when the battery indicator shows low power or turns red.
- Remove batteries from the transmitter if the system will not be used for an extended period to prevent leakage.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound or weak signal | Transmitter off; low batteries; incorrect frequency; receiver not connected to audio system; excessive range. | Ensure transmitter is on; replace batteries; verify transmitter and receiver are on the same group/channel; check audio cable connections; reduce distance between transmitter and receiver. |
| Interference or static | Other wireless devices; local RF interference; incorrect frequency selection. | Scan for a clear frequency and resynchronize; move away from other wireless devices or sources of interference. |
| Receiver 'Ready' light off | Transmitter off or out of range; transmitter and receiver not paired. | Turn on transmitter; ensure transmitter is within range; re-pair transmitter and receiver. |
| Short battery life | Old or low-quality batteries. | Use fresh, high-quality alkaline AA batteries. |
8. Specifications
| Feature | Detail |
|---|---|
| Model | BLX24/PG58-H9 |
| Frequency Band | H9 (512-542 MHz) |
| Microphone Form Factor | Handheld |
| Microphone Capsule | PG58 |
| Receiver Type | Single Channel |
| Operating Range | 300 feet (100m) line of sight |
| Battery Life (Transmitter) | Up to 14 hours (with 2 AA alkaline batteries) |
| Number of Channels | 1 (up to 12 compatible systems per frequency band) |
| Power Source | Battery Powered (Transmitter), AC Adapter (Receiver) |
| Material | Metal |
| Item Weight | 3 pounds (total system) |
| Product Dimensions | 13.5 x 4 x 12 inches |
| Connectivity Technology | Wireless |
| Connector Type | XLR (Receiver Output) |
| Polar Pattern | Unidirectional (PG58) |
9. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the official Shure website or contact Shure customer service directly. Keep your purchase receipt as proof of purchase for warranty claims.
You can find additional resources and contact information on the Shure official website.
