1. Introduction
The SUNBUCK AV-MP326BT is a versatile sound amplifier designed for both home and car audio systems. It features Bluetooth connectivity, an EQ equalization card receiver, and supports subwoofer output. This manual provides detailed instructions for setting up, operating, and maintaining your amplifier to ensure optimal performance.
Video 1: Unboxing and initial overview of the SUNBUCK AV-MP326BT amplifier.
2. Product Features
- Built-in Bluetooth for wireless audio streaming.
- Integrated FM Radio tuner.
- EQ Equalization for sound customization.
- Supports USB and SD/MMC Card playback.
- Dual microphone inputs for karaoke or public address.
- Remote control for convenient operation.
- Compatible with both household 220V AC and car 12V DC power inputs.
- Designed for high-fidelity (HiFi) audio performance.
Image 1: The amplifier shown in both car and home environments, emphasizing its versatile features.
3. Package Contents
Please check the package carefully for the following items:
- 1 x SUNBUCK AV-MP326BT Amplifier Host
- 1 x User's Manual
- 1 x Remote Control
Image 2: The amplifier, user manual, and remote control as found in the product packaging.
4. Specifications
| Parameter | Value |
|---|---|
| Brand | SUNBUCK |
| Model | AV-MP326BT |
| Rated Power | 200W + 200W |
| Standard Impedance | 4 - 16Ω |
| Frequency Response | 20Hz - 20KHz (±3dB) |
| Signal-to-Noise Ratio | ≥90dB (A weight) |
| Total Harmonic Distortion | 0.01% |
| Signal Input Sensitivity | 200MV (±30MV) |
| Microphone Input Sensitivity | 9 MV (±2MV) |
| Recording Level Output | ≈1V |
| Auxiliary Level Output | ≈1V |
| Use Voltage | 220V-240V AC 50/60Hz, 12V DC |
| Dimensions (W x D x H) | 290mm x 240mm x 100mm |
| Weight | 3.2 KG |
| Material | Metal |
| Channel | 2.0 Channel |
Image 3: Basic parameters and specifications of the amplifier.
5. Amplifier Overview
5.1 Front Panel Controls
The front panel provides access to all primary controls and inputs:
Image 4: Labeled diagram of the amplifier's front and rear panels.
- MIC 1 & 2 Inputs: 6.35mm jack for microphone connection.
- MIC 3 & 4 Inputs: 6.35mm jack for additional microphone connection.
- MIC 1 & 2 VOL: Adjusts the volume for Microphone 1 and 2.
- MIC 3 & 4 VOL: Adjusts the volume for Microphone 3 and 4.
- TREBLE (MIC): Adjusts the high frequencies for microphone input.
- MID (MIC): Adjusts the mid-range frequencies for microphone input.
- BASS (MIC): Adjusts the low frequencies for microphone input.
- ECHO: Controls the echo effect for microphones.
- DELAY: Controls the delay effect for microphones.
- LED DISPLAY: Digital display for current mode, track information, etc.
- USB Port: For connecting USB storage devices.
- SD/MMC CARD Slot: For inserting SD or MMC memory cards.
- LINE/USB/SD/BT Switch: Selects the audio input source (Line, USB, SD, Bluetooth).
- MIC VOL: Master volume control for all microphone inputs.
- INPUT: Selects the main audio input source.
- MUSIC VOL: Master volume control for music playback.
- TREBLE (MUSIC): Adjusts the high frequencies for music playback.
- BASS (MUSIC): Adjusts the low frequencies for music playback.
- BALANCE: Adjusts the left/right channel balance.
- EQ Equalization Sliders: Graphic equalizer for fine-tuning audio frequencies.
- POWER Switch: Turns the amplifier ON/OFF.
5.2 Rear Panel Connections
The rear panel houses all necessary audio and power connections:
Image 5: Rear panel connections of the amplifier.
- AUDIO INPUT (RCA): Connect external audio sources (e.g., CD player, DVD player) using RCA cables.
- AUDIO OUTPUT (RCA): Connect to other audio devices or recording equipment.
- FM ANT: Connect the FM antenna for radio reception.
- SPEAKER SYSTEM (L/R): Connect your passive speakers (4-16Ω impedance) to these terminals. Ensure correct polarity (+ to + and - to -).
- POWER DC INPUT (12V): For connecting to a 12V DC power source, typically in a car.
- 220V AC POWER SUPPLY: For connecting to a standard household AC power outlet (220V-240V).
6. Setup
Follow these steps to set up your SUNBUCK AV-MP326BT amplifier:
6.1 Power Connection
- For Home Use (AC Power): Connect the provided AC power cable to the 220V AC POWER SUPPLY input on the rear panel and then to a wall outlet.
- For Car Use (DC Power): Connect a 12V DC power source (e.g., car battery) to the POWER DC INPUT (12V) terminals on the rear panel. Ensure correct polarity: red to positive (+), black to negative (-).
6.2 Speaker Connection
Connect your passive speakers to the SPEAKER SYSTEM (L/R) terminals on the rear panel. Ensure the speaker impedance is between 4-16Ω. Match the positive (+) terminal of the amplifier to the positive (+) terminal of the speaker, and the negative (-) terminal of the amplifier to the negative (-) terminal of the speaker for both left and right channels.
6.3 Audio Input Connection
- RCA Input: Connect your external audio source (e.g., CD player, TV, DVD player) to the AUDIO INPUT (RCA) jacks on the rear panel using RCA cables.
- USB/SD Card: Insert a USB drive into the USB Port or an SD/MMC card into the SD/MMC CARD Slot on the front panel.
- Bluetooth: Ensure Bluetooth is enabled on your device and the amplifier is in Bluetooth mode (selected via the front panel switch).
6.4 Microphone Connection
Connect up to four microphones to the MIC 1 & 2 and MIC 3 & 4 6.35mm input jacks on the front panel.
6.5 FM Antenna Connection
Connect the FM antenna to the FM ANT terminal on the rear panel for improved radio reception.
7. Operating Instructions
7.1 Power On/Off
Press the POWER switch on the front panel to turn the amplifier ON or OFF.
7.2 Input Source Selection
Use the LINE/USB/SD/BT Switch or the INPUT selector on the front panel to choose your desired audio source (Line, USB, SD, Bluetooth, FM Radio).
7.3 Volume Control
- Adjust the overall music volume using the MUSIC VOL knob.
- Adjust the overall microphone volume using the MIC VOL knob.
- Individual microphone volumes can be adjusted with MIC 1 & 2 VOL and MIC 3 & 4 VOL.
7.4 Tone and EQ Adjustment
- Use the TREBLE and BASS knobs for music to adjust high and low frequencies.
- For microphones, use the dedicated TREBLE (MIC), MID (MIC), and BASS (MIC) knobs.
- Fine-tune the audio spectrum using the EQ Equalization Sliders to match your preferences or room acoustics.
7.5 Microphone Effects
Enhance your vocal performance using the ECHO and DELAY knobs for microphone effects.
7.6 Bluetooth Pairing
- Select 'BT' as the input source.
- The LED display will indicate Bluetooth pairing mode.
- On your mobile device, search for available Bluetooth devices and select 'SUNBUCK AV-MP326BT'.
- Once paired, you can stream audio wirelessly.
7.7 USB/SD Card Playback
When a USB drive or SD card is inserted and selected as the input source, the amplifier will automatically begin playing compatible audio files. Use the front panel controls or remote control to navigate tracks.
7.8 FM Radio Operation
Select 'FM' as the input source. Use the tuning controls (usually on the remote or front panel) to scan for and select radio stations. Extend the FM antenna for better reception.
7.9 Remote Control
The included remote control allows for convenient operation of various functions from a distance, including power, volume, input selection, and media playback controls.
Image 6: The remote control for the amplifier.
8. Maintenance
- Cleaning: Use a soft, dry cloth to clean the amplifier's exterior. Do not use liquid cleaners or aerosols.
- Ventilation: Ensure adequate ventilation around the amplifier to prevent overheating. Do not block ventilation openings.
- Storage: Store the amplifier in a cool, dry place away from direct sunlight and extreme temperatures.
- Power Cord: Regularly check the power cord for any damage. If damaged, replace it immediately with an appropriate cord.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cable not connected; Power switch off; Blown fuse (internal) | Check power cable connection; Turn power switch ON; Contact service for fuse replacement. |
| No sound output | Incorrect input source selected; Speaker cables loose or incorrectly connected; Volume too low; Mute function active | Select correct input source; Check speaker connections and polarity; Increase volume; Deactivate mute. |
| Bluetooth not connecting | Amplifier not in Bluetooth mode; Device too far; Bluetooth on device is off | Ensure amplifier is in BT mode; Move device closer; Enable Bluetooth on your device. |
| Poor FM radio reception | Antenna not connected or extended; Weak signal | Connect and extend FM antenna; Try repositioning the antenna or amplifier. |
| Microphone not working | Microphone not connected; Microphone volume too low; Microphone faulty | Ensure microphone is securely connected; Increase MIC VOL; Test with another microphone. |
10. User Tips
- Car Connection: When connecting to a car, ensure you use a stable 12V DC power supply. Connect the amplifier's 12V DC input terminals directly to your car's battery, observing correct polarity (red to positive, black to negative) to avoid damage.
- EQ Customization: Experiment with the graphic equalizer sliders to find the perfect sound profile for different music genres or listening environments.
- Microphone Feedback: If you experience microphone feedback (howling), try reducing the microphone volume, adjusting the microphone's position, or slightly lowering the treble/mid frequencies for the microphone input.
11. Warranty and Support
For any issues or questions regarding your SUNBUCK AV-MP326BT amplifier, please refer to the warranty information provided at the time of purchase or contact the seller/manufacturer's customer support. Keep your purchase receipt as proof of purchase.