1. Introduction
The Shure BLX288/B58 is a dual-channel wireless microphone system designed for clear, professional vocal performance. This system offers straightforward setup and reliable operation, making it suitable for various applications including live sound, presentations, and karaoke. It operates within the H10 frequency band (542-572 MHz), providing a robust wireless connection with a range of up to 300 feet (100 meters).
2. What's in the Box
Verify that all components are present in your package:
- 1x BLX88 Dual-Channel Receiver
- 2x BLX2 Handheld Wireless Transmitters with integrated BETA 58A Vocal Mic Capsules
- 2x Microphone Clips
- 4x AA Batteries (for transmitters)
- 1x Power Supply (for receiver)
3. Setup Instructions
3.1. Frequency Band Selection
Before initial setup, ensure that the H10 frequency band (542-572 MHz) is appropriate for your region. Wireless performance can be affected by local regulations and environmental factors. Consult the Shure website's Wireless Frequency Finder for detailed regional information.
3.2. Receiver Connection (BLX88)
- Power Connection: Connect the included power supply to the BLX88 receiver's DC input and then to an AC power outlet.
- Audio Output: Connect the receiver's XLR or 1/4-inch (6.3mm) output jacks to your mixer, amplifier, or sound system using appropriate audio cables. The BLX88 features two independent channels, each with its own output.
3.3. Transmitter Battery Installation (BLX2/B58)
- Unscrew the bottom half of the BLX2 handheld microphone to reveal the battery compartment.
- Insert two AA batteries, observing the correct polarity (+/-).
- Securely reattach the bottom half of the microphone.
3.4. System Pairing and Synchronization
- Power on the BLX88 receiver.
- Press the Group button on the receiver to scan for an available frequency. The display will show a group and channel.
- Power on each BLX2 handheld transmitter.
- On each transmitter, press and hold the Group button until the LED flashes. The transmitter will automatically sync with the receiver's selected frequency.
- Confirm that the 'Ready' indicator on the receiver illuminates for both channels, indicating a successful link.
4. Operating Instructions
4.1. Powering On/Off
- Receiver: Press the power button on the front panel of the BLX88 receiver.
- Transmitters: Press and hold the power button on the BLX2 handheld microphone until the LED indicator illuminates (on) or extinguishes (off).
4.2. Adjusting Audio Levels
Use the gain control knobs on the BLX88 receiver to adjust the output level for each microphone channel. Start with a conservative setting and increase as needed to achieve optimal sound without distortion. Monitor the audio indicator LEDs on the receiver to prevent clipping.
4.3. Operating Range and Battery Life
- The system operates reliably up to a range of 300 feet (100 meters) under optimal conditions. Obstacles and interference can reduce this range.
- BLX2 transmitters provide up to 14 hours of continuous use with two AA alkaline batteries. Monitor the battery status indicator on the transmitter and receiver to avoid unexpected power loss during use.
4.4. Multiple System Expansion
The BLX system supports running up to 12 compatible channels per frequency band. For complex setups with multiple wireless systems, careful frequency planning is recommended to avoid interference. Refer to the Shure website for advanced frequency coordination tools.
5. Maintenance
5.1. Battery Replacement
Replace AA batteries in the BLX2 transmitters when the low battery indicator appears. Always use fresh, high-quality alkaline batteries for optimal performance and battery life.
5.2. Cleaning
- Wipe the receiver and transmitters with a soft, dry cloth.
- For microphone grilles, gently remove any debris. Do not use harsh chemicals or abrasive cleaners.
5.3. Storage
When not in use for extended periods, remove batteries from the transmitters to prevent leakage. Store the system in a cool, dry place, away from extreme temperatures and humidity.
6. Troubleshooting
If you encounter issues with your Shure BLX288/B58 system, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No Sound | Transmitter off, receiver off, incorrect frequency, audio cable disconnected, mixer input muted. | Ensure all components are powered on and synced. Check audio cable connections and mixer settings. |
| Interference/Dropouts | Other wireless devices, line-of-sight obstruction, operating too far from receiver. | Perform a fresh frequency scan. Ensure clear line-of-sight between transmitter and receiver. Reduce distance. Turn off other interfering wireless devices. |
| Short Battery Life | Old or low-quality batteries. | Replace with fresh, high-quality AA alkaline batteries. |
| Distorted Audio | Input gain too high on transmitter or receiver, output level too high on receiver. | Reduce gain settings on both transmitter and receiver. Adjust output level on receiver. |
For more detailed troubleshooting or specific technical issues, please visit the official Shure support website or contact their customer service.
7. Specifications
| Feature | Specification |
|---|---|
| Model | BLX288/B58-H10 |
| Frequency Band | H10 (542-572 MHz) |
| Microphone Type | Handheld (BETA 58A Dynamic) |
| Receiver Type | Dual Channel (BLX88) |
| Operating Range | 300 ft (100 m) line of sight |
| Battery Life | Up to 14 hours (with 2x AA alkaline batteries) |
| Number of Channels | 2 |
| Max Systems per Band | Up to 12 |
| Signal-to-Noise Ratio | 96 dB |
| Item Weight | 3.1 pounds (total system) |
| Product Dimensions | 19.3 x 16.4 x 3.5 inches (receiver) |
| Power Source | Battery Powered (transmitters), AC Adapter (receiver) |
| Included Components | BLX88 Receiver, 2x BLX2/B58 Transmitters, 2x Mic Clips, 4x AA Batteries, Power Supply |
8. Warranty and Support
8.1. Warranty Information
The Shure BLX288/B58 Wireless Microphone System includes a 2-year limited warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.
8.2. Customer Support
For technical assistance, product registration, or warranty service, please visit the official Shure website at www.shure.com. You can find FAQs, user guides, and contact information for customer support in your region.
