ZK-DAM H2 Isolation Low Noise Karaoke Reverberation Board User Manual

1. Introduction

The ZK-DAM H2 is an upgraded isolation-type microphone mixing board designed to provide low-noise karaoke and front-stage effects. It features an upgraded structure for more convenient use and offers a range of functionalities for enhanced audio experience. This manual provides detailed instructions for the proper setup, operation, and maintenance of your ZK-DAM H2 device.

Key Features:

• Isolation type design for no common ground noise.
• Supports EQ adjustment via upper computer software.
• Multiple audio input options: Bluetooth (BT), USB drive, AUX decoding.
• Dedicated microphone mixing capabilities.
• Dual independent microphone interfaces.
• Dynamic anti-whistling sound function.
• TWS (True Wireless Stereo) box matching function.
• Virtual bass enhancement.

2. Safety Information

• Ensure the power supply voltage is within the specified range (8-36V DC) to prevent damage.
• Do not expose the device to moisture, rain, or extreme temperatures.
• Avoid placing the device near heat sources or in direct sunlight.
• Do not attempt to disassemble or repair the device yourself. Refer to qualified personnel for service.
• Keep out of reach of children.

3. Package Contents

Upon opening your ZK-DAM H2 package, please verify that all the following components are included:

• ZK-DAM H2 Reverberation Board
• Microphone Input Module (with two 6.35mm jacks)
• Connecting Cable for Microphone Module
• Small Screwdriver (for assembly)
• Assorted small components (e.g., standoffs, screws)

Note: The casing for the board is not included and needs to be assembled by the user if desired.

4. Product Overview

The ZK-DAM H2 board features various inputs, outputs, and control knobs for comprehensive audio management. Familiarize yourself with the layout below.

Component Identification:

• Power Supply (8-36VDC): Input for DC power.
• Audio Output: Connects to an amplifier or speakers.
• Microphone Echo Function Enable Switch: Toggles microphone echo.
• Virtual Bass Function Enable Switch: Toggles virtual bass.
• Isolation Module: Ensures no common ground noise.
• Microphone 1 Input / Microphone 2 Input: Connect your microphones.
• USB Drive/Sound Card Input: For USB media playback or PC connection.
• AUX Audio Input: For external audio sources.
• MIC_BASS: Adjusts microphone bass level.
• MIC_TREBLE: Adjusts microphone treble level.
• MIC_REVERB: Adjusts microphone reverberation (echo) level.
• MIC_VOL (with multifunctional button): Controls microphone volume and mode switching.
• MUSIC_VOL (with multifunctional button): Controls music volume and playback.

5. Setup

5.1 Basic Connections

1. Power Supply: Connect a DC power supply (8-36V) to the 'Power In' terminals on the board.
2. Audio Output: Connect the 'Audio Output' of the ZK-DAM H2 to your amplifier or active speakers.
3. Microphones: Connect your microphones to the 'Microphone 1 Input' and 'Microphone 2 Input' jacks on the external module. Connect the module to the main board using the provided cable.
4. Audio Input: Choose your desired audio input source:
   • Bluetooth (BT): Ensure no USB drive or AUX cable is inserted.
   • USB Drive: Insert a USB drive into the 'USB Drive/Sound Card Input'.
   • AUX: Connect an audio source via a 3.5mm cable to the 'AUX Audio Input'.

5.2 PC Software Setup (for EQ Adjustment)

The ZK-DAM H2 supports EQ adjustment via a dedicated PC upper computer debugging software. To use this feature:

1. Download the software and tuning help manual from the official link: http://www.qingdaowuzhi.cn/YaSuo/DAM/ShanJing.zip
2. Decompress the downloaded ZIP file.
3. Connect the ZK-DAM H2 to your computer using a dual male USB data cable (not included).
4. Follow the instructions in the tuning help manual (PDF) for software installation and EQ adjustment.

6. Operating Instructions

6.1 Knob Functions

• MIC_BASS: Rotate to increase or decrease the bass frequency of the microphone input.
• MIC_TREBLE: Rotate to increase or decrease the treble frequency of the microphone input.
• MIC_REVERB: Rotate to adjust the amount of reverberation (echo) applied to the microphone input.

6.2 Multi-Function Buttons

The MIC_VOL and MUSIC_VOL knobs also function as multi-function buttons:

• MIC_VOL Button:
  • Short press: Switches between BT, USB drive, and AUX input modes.
  • Long press for 1 second: Activates/deactivates Vocal Remover function.
  • Long press for 3 seconds: Initiates TWS pairing or unpairing.
• MUSIC_VOL Button:
  • Click: Plays or pauses the current music track.
  • Double click: Skips to the next song.
  • Long press for 1 second: Skips to the previous song.
  • Long press for 3 seconds: Clears TWS pairing records.

6.3 TWS (True Wireless Stereo) Function

The TWS function allows two ZK-DAM H2 units to be paired for stereo sound. This is particularly useful for creating a wider soundstage with separate left and right channels.

TWS Connection Method:

1. Ensure both ZK-DAM H2 products are powered on.
2. Verify that Bluetooth is NOT connected and no USB drive or AUX cable is inserted into either unit.
3. On one of the products, long press and hold the MIC_VOL adjustment knob for more than 3 seconds. The red TWS indicator light will start flashing, indicating it is searching for a matching box.
4. After successful pairing, the TWS indicator light on the first product will remain on (for the left channel), while the TWS indicator light on the second product will flash (for the right channel).
5. Once paired, the TWS function will work normally in BT, USB, and AUX modes.

TWS Cancellation Method:

Long press the MIC_VOL adjustment knob of either paired product for more than 3 seconds. The red TWS indicator light will turn off, confirming that the TWS function has been canceled.

TWS Clearing Pairing Records:

After TWS pairing, both the host and slave units record each other, which can make it difficult for a third party to pair successfully. To clear these records, long press the MUSIC_VOL adjustment knob for more than 3 seconds.

Note on TWS Mode:

• In TWS mode, only the host unit will emit the sound from the microphone.
• Decoding of FLAC and APE songs from a USB drive may experience lag in TWS mode, which is not the case in non-TWS mode.

7. Maintenance

• Clean the device regularly with a soft, dry cloth. Do not use liquid cleaners or aerosols.
• Ensure all connections are secure and free from dust or debris.
• Store the device in a cool, dry place when not in use.
• Avoid dropping or subjecting the device to strong impacts.

8. Troubleshooting

If you encounter issues with your ZK-DAM H2, please refer to the following common problems and solutions:

9. Specifications

10. Warranty and Support

This product is covered by a standard manufacturer's warranty against defects in materials and workmanship. For warranty claims or technical support, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase.