1. Introduction
Thank you for purchasing the SUNBUCK AV-608BT Audio Power Amplifier. This amplifier is designed to provide high-quality audio for your home theater and karaoke needs, featuring Bluetooth 5.0 connectivity, FM radio, USB/SD card playback, and multiple audio inputs. Please read this manual carefully before operating the device to ensure proper use and to maximize its performance.
2. Key Features
- Versatile Audio Inputs: Supports DVD and AUX signal inputs.
- Output Options: LINE output for connecting to active subwoofers or other signal sources, plus center and surround speaker outputs.
- Power Flexibility: 115V/230V power conversion for global compatibility.
- Wireless Connectivity: Built-in Bluetooth 5.0 for seamless audio streaming.
- Integrated Media Player: FM radio, SD card slot, and USB interface for direct media playback.
- Karaoke Functionality: Two microphone inputs with adjustable reverberation and delay.
- Audio Customization: 5-band EQ mixer, fine tuning, balance, treble, and bass controls.
- Convenient Control: Includes a remote control for easy operation.
3. What's in the Box
Upon unpacking, please ensure all items listed below are present and in good condition:
- 1 x SUNBUCK AV-608BT Audio Power Amplifier
- 1 x Remote Control
- 1 x FM Radio Antenna
- 1 x User Manual
- 1 x Power Cable
Note: USB Disk and SD Card (Max 64GB) are not included and must be purchased separately.
4. Setup Instructions
Before connecting any components, ensure the amplifier is turned off and unplugged from the power outlet.
4.1 Front and Rear Panel Overview
4.2 Connecting Speakers
- Identify the 'SPEAKER OUTPUT' terminals on the rear panel. The amplifier supports speakers with an impedance of 4-16 ohms.
- Carefully strip a small portion of insulation from the ends of your speaker wires.
- Connect the positive (+) terminal of each speaker to the corresponding positive (+) terminal on the amplifier, and the negative (-) terminal of each speaker to the corresponding negative (-) terminal on the amplifier. Ensure correct polarity for optimal sound quality.
- Tighten the terminals securely to prevent loose connections.
4.3 Connecting Audio Sources
- For external audio devices like DVD players, CD players, or computers, use RCA cables to connect their audio output to the 'AUDIO INPUT' (AUX1 or AUX2) jacks on the rear panel.
- The 'LINE Output' can be used to connect to an active subwoofer or another amplifier.
4.4 Connecting FM Antenna
Connect the included FM antenna to the 'FM ANT' terminal on the rear panel for radio reception.
4.5 Power Connection
Connect the power cable to the 'POWER INPUT' on the rear panel and then plug it into a standard 115V or 230V AC power outlet. The amplifier features automatic voltage conversion.
5. Operating Instructions
5.1 Power On/Off
Press the 'POWER' switch on the front panel to turn the amplifier on or off. The LED display will illuminate when the unit is powered on.
5.2 Volume and Tone Controls
- VOLUME: Rotate the large knob on the front panel to adjust the master volume.
- BALANCE: Adjusts the balance between the left and right audio channels.
- TREBLE: Controls the high-frequency response of the audio.
- BASS: Controls the low-frequency response of the audio.
- LOUD ON/OFF: Toggles the loudness enhancement feature.
5.3 Source Selection
Use the 'MODE' button on the front panel or the remote control to cycle through available input sources: Bluetooth, FM, USB, SD, AUX1, AUX2, DVD.
5.4 Bluetooth Pairing
- Turn on the amplifier and select 'Bluetooth' mode using the 'MODE' button. The LED display will show "BLUE".
- Enable Bluetooth on your mobile device (smartphone, tablet, etc.).
- Search for available devices and select "AV-608BT" to pair.
- Once paired, you can stream audio from your device to the amplifier.
5.5 USB/SD Card Playback
- Insert a USB flash drive or SD card (up to 64GB, not included) containing MP3 audio files into the respective slot on the front panel.
- The amplifier will automatically switch to USB/SD mode and begin playback.
- Use the playback control buttons (play/pause, next/previous track) on the front panel or remote control.
5.6 FM Radio Operation
- Select 'FM' mode using the 'MODE' button.
- Use the tuning buttons on the front panel or remote to scan for available radio stations.
5.7 Microphone and Karaoke Functions
- Connect up to two microphones to the 'MIC1' and 'MIC2' input jacks on the front panel.
- Adjust the 'MIC VOL' knob to control the microphone volume.
- Use the 'ECHO' knob to add reverberation effect to the microphone sound.
6. Specifications
| Feature | Specification |
|---|---|
| Model | AV-608BT |
| Channel | 2.0 Channel |
| Rated Power | 1200W |
| Peak Power | 2000W |
| Frequency Response | 20Hz - 20KHz (±10dB) |
| Rated Voltage | 115V/230V Conversion |
| Standard Impedance | 4 to 16 ohm |
| Signal to Noise Ratio | ≥ 90dB |
| Type of Power Amplifier | AV Power Amplifier |
| Total Harmonic Distortion | ≤ 0.5% |
| Signal Input Sensitivity | 200mv (± 30mv) |
| Microphone Input Sensitivity | 9 mv (± 2mv) |
| Recording Level Output | 1V |
| Auxiliary Level Output | 1V |
| Supported Media | USB Disk / Max 64GB SD Card (Not included) |
| Dimensions (L×W×H) | 360 × 70 × 240 mm (6.3 × 2.8 × 9.5 inches) |
| Color Options | Black, Gold |
7. Maintenance
To ensure the longevity and optimal performance of your amplifier, please follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the exterior of the amplifier. Do not use liquid cleaners or aerosol sprays, as they may damage the finish or internal components.
- Ventilation: Ensure that the ventilation openings on the top and sides of the amplifier are not blocked. Proper airflow is crucial to prevent overheating.
- Environment: Place the amplifier in a cool, dry location away from direct sunlight, heat sources, and excessive moisture.
- Power: Unplug the amplifier from the power outlet when not in use for extended periods or during electrical storms.
8. Troubleshooting
If you encounter any issues with your SUNBUCK AV-608BT amplifier, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cable not connected; Power switch off; Power outlet fault. | Ensure power cable is securely connected. Turn the power switch ON. Test the power outlet with another device. |
| No sound output | Incorrect input source selected; Speaker wires loose or incorrectly connected; Volume too low; Mute activated. | Select the correct input source. Check all speaker and audio input connections. Increase the volume. Ensure the unit is not muted. |
| Bluetooth not connecting | Amplifier not in Bluetooth mode; Device not discoverable; Already paired with another device. | Switch amplifier to Bluetooth mode. Ensure your device's Bluetooth is on and discoverable. Disconnect from other Bluetooth devices and try pairing again. |
| Poor FM reception | FM antenna not connected or poorly positioned. | Connect the FM antenna securely. Adjust its position for better signal reception. |
| Distorted sound | Input signal too high; Speaker impedance mismatch; Volume too high. | Reduce the input volume from the source device. Ensure speakers are within the 4-16 ohm impedance range. Lower the amplifier's volume. |
9. User Tips
- Speaker Compatibility: For optimal sound and to prevent damage, ensure your speakers have an impedance between 4 and 16 ohms. This amplifier is capable of driving powerful speakers, with users reporting good performance even with larger 'S 90' type speakers.
- Media Playback: When using the USB or SD card input, ensure your audio files are in a compatible format, such as MP3, for seamless playback.
- Microphone Echo: Experiment with the 'ECHO' knob to find the perfect reverberation level for your voice during karaoke sessions.
10. Warranty and Support
This product is covered by a manufacturer's warranty. For detailed warranty information, please refer to the documentation provided at the time of purchase or contact your retailer. If you experience any issues that cannot be resolved using the troubleshooting guide, please contact the seller or manufacturer's customer support for assistance.