Gochanmi ER2020Y Professional UHF In-Ear Wireless Audio Monitoring System

1. Introduction

The Gochanmi ER2020Y is a professional UHF in-ear wireless audio monitoring system designed for stage, studio, and live event applications. It provides reliable and high-quality audio monitoring with advanced features such as 200 selectable frequencies, Bluetooth connectivity, and latency-free transmission. This manual provides detailed instructions for the proper setup, operation, and maintenance of your ER2020Y system.

Figure 1.1: Gochanmi ER2020Y Wireless Audio Monitoring System, showing the main receiver unit and two bodypack receivers with in-ear monitors.

2. Key Features

• UHF Frequency Range: Operates within the 530-580MHz band for stable and clear signal transmission.
• Selectable Frequencies: Offers 200 selectable frequencies to minimize interference and ensure optimal performance.
• Bluetooth Connectivity: Integrated Bluetooth for wireless audio streaming to the receiver.
• Latency-Free Technology: Advanced chip technology ensures minimal audio delay for real-time monitoring.
• IR Synchronization: Infrared synchronization for quick and easy pairing of receiver and bodypacks.
• Audio Output: AB Mono output with wired headphone jack (3.5mm and 6.35mm support).
• Durable Construction: Made with stainless steel for enhanced durability.
• Water Repellent: Designed with water-repellent features for added protection.
• Extended Range: Maximum operation distance of up to 150 meters (approximately 492 feet).

3. Package Contents

Please verify that all items are present in your package:

• ER2020Y Receiver Unit
• Bodypack Receiver(s) (quantity may vary based on model variant)
• In-Ear Monitors (earphones)
• Power Adapter for Receiver Unit
• Antennas
• Audio Cables (e.g., XLR, 6.35mm Jack)
• User Manual (this document)
• AA Batteries (for bodypack receivers, not included with all models)

4. Setup Guide

4.1 Initial Setup and Connections

1. Connect the provided antennas to the antenna ports on the rear of the ER2020Y receiver unit.
2. Connect the power adapter to the DC IN port on the receiver unit and plug it into a power outlet.
3. Connect your audio source (e.g., mixing console) to the receiver unit's input ports (XLR or 6.35mm Jack). The system supports both XLR and 6.35mm universal input ports.
4. Insert AA batteries into the bodypack receiver(s). Ensure correct polarity.
5. Connect your in-ear monitors to the 3.5mm headphone jack on the bodypack receiver.

Figure 4.1: Rear view of the ER2020Y receiver showing universal input ports that support both XLR and 6.35mm jack connections.

Figure 4.2: Front view of the ER2020Y receiver highlighting the 6.35mm headphone input, which also supports binaural audio.

4.2 Frequency Adjustment

The ER2020Y allows for independent frequency adjustment for each channel.

1. Press the SET button on the corresponding channel panel on the receiver.
2. The frequency number on the channel display will become editable.
3. Use the UP and DOWN buttons to change the frequency.

Figure 4.3: Visual guide for adjusting frequencies independently on the ER2020Y receiver unit.

4.3 Automatic Frequency Linking (IR Sync)

To automatically synchronize the bodypack receiver with the main unit:

1. Turn on both the receiver unit and the bodypack receiver.
2. Open the battery compartment cover of the bodypack receiver to expose the IR sensor.
3. Align the IR point on the bodypack receiver with the IR sensor on the main receiver unit (usually located near the channel controls).
4. Ensure the devices are within approximately 2 cm (0.8 inches) of each other. The frequency pairing will complete automatically.

Figure 4.4: Demonstrates the IR synchronization process between the main receiver and a bodypack.

4.4 Bluetooth Connection

To connect a Bluetooth device to the ER2020Y receiver:

1. Ensure the ER2020Y receiver is powered on.
2. Activate Bluetooth on your mobile phone or other Bluetooth-enabled device.
3. Search for new devices. The ER2020Y will appear as "ER102" (or similar, refer to your device's display).
4. Select "ER102" to connect. Once connected, you can stream audio wirelessly to the monitoring system.

Figure 4.5: Instructions for pairing a mobile device via Bluetooth with the ER2020Y receiver.

5. Operating Instructions

5.1 Power On/Off

To power on the receiver unit, press the POWER button. To power off, press and hold the POWER button until the unit shuts down. Bodypack receivers typically have a separate power switch or button.

5.2 Channel Management

The ER2020Y system supports multiple bodypack receivers per channel. Each channel can connect up to 100 units, allowing for extensive monitoring setups.

Figure 5.1: Illustration of the ER2020Y's capability to connect up to 100 bodypack units per channel, enabling large-scale monitoring.

5.3 Volume Control

Adjust the volume for each channel using the dedicated volume control knobs on the receiver unit. For individual monitoring, adjust the volume directly on the bodypack receiver.

6. Maintenance

• Cleaning: Use a soft, dry cloth to clean the exterior of the receiver and bodypack units. Do not use liquid cleaners or solvents.
• Battery Replacement: Replace bodypack batteries when the low battery indicator appears or audio quality degrades. Always use fresh, high-quality AA batteries.
• Storage: When not in use for extended periods, store the system in a cool, dry place away from direct sunlight and extreme temperatures. Remove batteries from bodypacks before long-term storage.
• Cable Care: Avoid sharp bends or kinks in cables. Store cables neatly to prevent damage.

7. Troubleshooting

8. Specifications

Figure 8.1: Diagram illustrating the main components and controls of the Gochanmi ER2020Y receiver and bodypack.

9. Warranty and Support

Gochanmi products are manufactured to high-quality standards. For warranty information, please refer to the warranty card included with your product or visit the official Gochanmi website. For technical support, troubleshooting assistance, or service inquiries, please contact Gochanmi customer support through the contact information provided on their official website or your purchase platform.

Online Resources:

• For the latest product information and FAQs, visit the Gochanmi Brand Store on Amazon.