1. Introduction
Thank you for choosing the Sunbuck 326BT 2.0 Channel Bluetooth Audio Power HiFi Amplifier. This versatile amplifier is designed for both car and home audio systems, offering a powerful and feature-rich audio experience. It includes built-in Bluetooth 5.0 for wireless streaming, FM radio, USB and SD card inputs, and multiple microphone inputs with echo and delay adjustments for karaoke. The amplifier features a 5-band EQ mixer function for precise sound control.
The amplifier incorporates advanced components such as the NJW1194 electronic volume control, which provides low noise and low distortion characteristics with a resistance ladder circuit. It also features a Qualcomm Bluetooth module supporting Bluetooth 5.0 with apt-X for high-quality wireless audio, and an Infineon MA12070 audio power amplifier for efficient, high-dynamic range, low-distortion, and low-noise performance.
2. Package Contents
Please check the box for the following items:
- 1 x Sunbuck 326BT Audio Power Amplifier
- 1 x Remote Control
- 1 x Power Cable
- 1 x User Manual
3. Product Overview
The Sunbuck 326BT amplifier features a comprehensive set of controls and connections on its front and rear panels. Familiarize yourself with these components before operation.
Front Panel Controls & Indicators:
- Power ON / OFF: Main power switch for the unit.
- MIC Input (MIC1-MIC4): 1/4" (6.35mm) jacks for connecting microphones.
- MIC Adjustment: Controls for individual microphone volume (MIC1 VOL, MIC2 VOL), Treble, Bass, Echo, and Delay.
- TREBLE: Adjusts the high-frequency response of the audio.
- BASS: Adjusts the low-frequency response of the audio.
- Balance (MIC): Adjusts the left/right balance for microphone input.
- SD Input: Slot for inserting an SD card for media playback.
- LED Display: Digital display for showing mode, track information, and volume level.
- USB Disk: USB port for connecting a USB flash drive for media playback.
- MIC VOL: Master volume control for all microphone inputs.
- MUSIC VOL: Master volume control for music playback.
- Balance Adjustment (Music): Adjusts the left/right balance for music playback.
- EQ (Left/Right Channel): 5-band graphic equalizer for fine-tuning the audio frequency response for each channel.
- Input Selector: Button to switch between different audio input sources (MP3/FM/BT, A/B).
- Media Controls: Buttons for Mode, Play/Pause, Next, Previous, Auto Repeat.
Rear Panel Connections:
- Audio Input (DVD/LINE): RCA jacks for connecting external audio sources like DVD players or other line-level devices.
- Audio Output: RCA jacks for sending audio signal to another amplifier or recording device.
- Speaker System (4~8Ω): Screw terminals for connecting passive speakers.
- FM ANT: Terminal for connecting the FM antenna.
- Power Input (AC 220V-240V / 110V-120V): AC power socket for connecting to mains power.
- DC12V Input: DC power input for car use (e.g., 12V/5A).
4. Setup Instructions
Follow these steps to set up your Sunbuck 326BT amplifier:
4.1 Speaker Connection
Connect your passive speakers to the 'Speaker System' terminals on the rear panel. Ensure correct polarity (red to red, black to black) and that your speakers have an impedance between 4 and 8 ohms.
4.2 Audio Input Connection
- DVD/LINE Input: Use RCA cables to connect audio output from devices like DVD players, CD players, or other audio sources to the 'Audio Input' jacks on the rear panel.
- Microphone Input: Plug up to four microphones into the 'MIC Input' jacks on the front panel.
- USB/SD Card: Insert a USB flash drive into the 'USB Disk' port or an SD card into the 'SD Input' slot on the front panel.
4.3 FM Antenna Connection
Connect the included FM antenna to the 'FM ANT' terminal on the rear panel for improved radio reception.
4.4 Power Connection
- AC Power: Connect the power cable to the 'Power Input' socket on the rear panel and then to a suitable AC power outlet (110V-US or 220V-EU, depending on your model).
- DC12V Power: For car use, connect a DC12V power supply (e.g., 12V/5A) to the 'DC12V Input' terminal on the rear panel.
5. Operating Instructions
5.1 Power On/Off
Flip the 'Power ON / OFF' switch on the front panel to turn the amplifier on or off.
5.2 Source Selection
Press the 'Input Selector' button on the front panel to cycle through available audio sources: MP3/FM/BT (for USB, SD, Bluetooth, FM Radio) or A/B (for DVD/LINE inputs).
5.3 Volume Control
- MUSIC VOL: Adjust the main volume for music playback using the 'MUSIC VOL' knob.
- MIC VOL: Adjust the overall microphone volume using the 'MIC VOL' knob.
- Individual MIC Volume: Fine-tune the volume for each microphone using the 'MIC1 VOL', 'MIC2 VOL', etc., knobs.
5.4 Tone and Balance Adjustment
- TREBLE / BASS: Use the 'TREBLE' and 'BASS' knobs to adjust the high and low frequencies of the audio.
- Balance (Music): Use the 'Balance Adjustment' knob in the music section to adjust the left/right audio balance.
- Balance (MIC): Use the 'Balance' knob in the microphone section to adjust the left/right microphone balance.
5.5 Microphone Effects (Echo & Delay)
For karaoke or vocal performances, use the 'ECHO' and 'DELAY' knobs in the microphone adjustment section to add effects to your voice.
5.6 Graphic Equalizer (EQ)
The 5-band graphic equalizer allows you to fine-tune the frequency response for both the left and right channels. Adjust the sliders for specific frequency bands (e.g., 100Hz, 330Hz, 1KHz, 3KHz, 10KHz) to customize your sound.
5.7 Bluetooth Operation
To connect via Bluetooth:
- Select the 'BT' input mode using the 'Input Selector' button. The LED display will show 'BLUE'.
- Enable Bluetooth on your mobile device (phone, tablet, laptop).
- Search for available devices and select 'Sunbuck' or a similar name.
- Once paired, you can stream audio wirelessly to the amplifier.
5.8 USB/SD Card Playback
Insert a USB flash drive or SD card (up to 64GB, not included) into the respective slots on the front panel. The amplifier will automatically detect and begin playing compatible audio files. Use the media control buttons (Play/Pause, Next, Previous) to manage playback.
5.9 FM Radio
Select the 'FM' input mode. Use the media control buttons to scan for stations or manually tune to your desired frequency. Ensure the FM antenna is properly connected for optimal reception.
5.10 Remote Control Operation
The included remote control provides convenient access to various functions:
- Player standby and power button: Turns the unit on/off or puts it in standby.
- Channel next: Skips to the next track/station.
- Next: Skips to the next track/station.
- PREV: Skips to the previous track/station.
- Vol-: Decreases volume.
- Vol+: Increases volume.
- Function button: Cycles through input modes.
- Pause/Play: Toggles playback.
- EQ effect: Cycles through equalizer presets.
- Mode: Cycles through input modes.
- Recycle: Toggles repeat modes.
- Numeric Keypad: Direct track selection or frequency input.
6. Specifications
| Feature | Specification |
|---|---|
| Model Number | 326BT |
| Brand Name | SUNBUCK |
| Channels | 2 (2.0) |
| Input Voltage | 110V-US, 220V-EU, DC12V |
| Rated Power | 1200W |
| Peak Power | 2000W |
| Maximum Power Per Channel | 101-130W |
| Rated Frequency | 20Hz - 20KHz |
| Signal to Noise Ratio | 90dB |
| Standard Impedance | 4 to 16 ohm |
| Bluetooth Version | 5.0 (with apt-X support) |
| Bluetooth Transmission Distance | 8 meters (No obstacles) |
| 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) | 26 x 29 x 10 cm (10 x 11.4 x 4 inches) |
| Certification | CE |
7. Troubleshooting
If you encounter issues with your amplifier, please refer to the following common problems and solutions:
- No Power:
- Ensure the power cable is securely connected to both the amplifier and a working power outlet.
- Check the power switch on the front panel is in the 'ON' position.
- If using DC12V, ensure the power supply is adequate and correctly connected.
- No Sound:
- Verify that speakers are correctly wired to the 'Speaker System' terminals with proper polarity.
- Check that the audio input source is correctly connected and selected (e.g., Bluetooth, USB, DVD/LINE).
- Increase the 'MUSIC VOL' and 'MIC VOL' knobs.
- Ensure the source device (phone, DVD player) is playing audio and its volume is turned up.
- Poor Sound Quality:
- Check all audio cables for secure connections and damage.
- Adjust the 'TREBLE', 'BASS', and 'EQ' settings to optimize sound.
- Ensure speaker impedance matches the amplifier's requirements (4-16 ohms).
- Bluetooth Pairing Issues:
- Ensure the amplifier is in 'BT' mode.
- Make sure your device's Bluetooth is on and discoverable.
- Move your device closer to the amplifier (within 8 meters, clear line of sight).
- Try restarting both the amplifier and your Bluetooth device.
8. User Tips
- Always ensure all connections (speakers, audio sources, power) are secure before turning on the amplifier to prevent damage.
- Experiment with the 5-band EQ to find the sound profile that best suits your music and listening environment.
- When using microphones, start with low 'MIC VOL' and gradually increase to avoid feedback. Adjust 'ECHO' and 'DELAY' for desired vocal effects.
9. Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior of the amplifier. Do not use liquid cleaners or solvents.
- Ventilation: Ensure the amplifier has adequate ventilation. Do not block the ventilation openings on the top or sides of the unit.
- Storage: When not in use for extended periods, store the amplifier in a cool, dry place away from direct sunlight and extreme temperatures.
10. Warranty and Support
This product is covered by a standard manufacturer's warranty. For specific warranty details or technical support, please refer to the documentation provided at the time of purchase or contact the seller directly. Keep your purchase receipt as proof of purchase.
