Introduction
The SUNBUCK AV555BT is a powerful 4000W, 5-channel digital HIFI audio amplifier designed for home theater systems and karaoke. It features built-in Bluetooth for wireless audio streaming, FM stereo radio, and supports playback from SD cards and USB drives. With multiple microphone inputs and comprehensive audio controls, it delivers a clear, strong, and dynamic sound experience.
Package Contents
Before setup, please ensure all items are present in the package:
- 1 x SUNBUCK AV555BT Audio Power Amplifier
- 1 x Remote Control
- 1 x FM Antenna
- 1 x User Manual
Note: USB Disk/SD Card is not included in the package.
Safety Information
Please read and understand all safety instructions before operating this device. Keep this manual for future reference.
- Do not expose the unit to rain or moisture to prevent fire or electric shock.
- Do not open the amplifier casing. There are no user-serviceable parts inside. Refer all servicing to qualified personnel.
- Ensure proper ventilation. Do not block ventilation openings.
- Use only the specified power voltage (AC 110V-220V/50Hz).
- Keep away from heat sources and direct sunlight.
Product Overview
Front Panel Controls
- Power Switch: Turns the amplifier on/off.
- BT/MP3/Digital: Mode selection button.
- Delay, Echo: Adjusts microphone effects.
- Mic 1&2 Volume, Mic 1&2 Bass, Mic 1&2 Treble: Controls for microphone inputs.
- Mic 1, Mic 2, Mic 3 Input: Microphone input jacks.
- Music Volume, Bass, Treble, Balance: Main audio controls.
- Display Screen: Shows current mode and settings.
- Cycle, Play/Pause, Mode, Prev, Next: Media playback controls.
- FM Antenna: Connection for FM radio antenna.
- SD Card Slot, USB Slot: For media playback.
Rear Panel Connections
- Audio Input (L/R): RCA jacks for connecting external audio sources (e.g., CD player, TV).
- Audio Output (L/R): RCA jacks for connecting to other audio devices.
- Speaker System (R/L, SR/SL, C): Terminals for connecting main, surround, and center speakers.
- Power Source: AC power input (220V-240V/50Hz or 110V depending on model).
Setup Guide
1. Speaker Connection
The AV555BT supports 5-channel output and can connect up to 2 pairs of speakers below 10 inches. Ensure speakers are rated between 4 to 16Ω impedance.
- Identify the speaker terminals on the rear panel: R (Right Main), L (Left Main), SR (Surround Right), SL (Surround Left), and C (Center).
- Connect your speakers to the corresponding terminals. Ensure correct polarity (+ to + and - to -) for optimal sound quality.
- For main channel output, the amplifier is compatible with most fixed impedance speakers and card package speakers.
- For center and surround output, connect appropriate speakers to enhance stereo sound effects.
2. Audio Source Connection
Connect your audio sources (e.g., TV, CD player, MP3 player, phone) to the "AUDIO INPUT" RCA jacks on the rear panel.
3. Microphone Connection
The amplifier features three microphone inputs on the front panel:
- Connect up to two wired microphones to "MIC 1" and "MIC 2" inputs.
- A wireless microphone receiver can be connected to "MIC 3 Input".
4. FM Antenna Connection
Connect the included FM antenna to the "FM ANT" terminal on the rear panel for radio reception.
5. Power Connection
Connect the power cord to the "POWER SOURCE" input on the rear panel and then plug it into a suitable AC outlet (110V or 220V, depending on your model/region).
Operating Instructions
1. Power On/Off
Press the "POWER" switch on the front panel to turn the amplifier on or off. The dazzling color light on the front panel will illuminate when powered on.
2. Mode Selection
Press the "MODE" button on the front panel or remote control to cycle through input modes: Bluetooth (BT), USB, SD, FM, and AUX.
3. Bluetooth Pairing
- Switch the amplifier to "BT" mode. The display will show "AUX" or "BT" and indicate it's ready for pairing.
- Enable Bluetooth on your device (smartphone, tablet, PC, etc.).
- Search for "AV555BT" in your device's Bluetooth settings and select it to pair.
- Once paired, you can stream audio wirelessly from your device to the amplifier.
4. USB/SD Card Playback
- Insert a USB drive or SD card containing MP3 audio files into the respective slot on the front panel.
- Switch the amplifier to "USB" or "SD" mode.
- Use the "Play/Pause", "Prev", and "Next" buttons to control playback.
5. FM Radio
- Ensure the FM antenna is connected.
- Switch the amplifier to "FM" mode.
- Use the "Prev" and "Next" buttons to scan for radio stations.
6. Audio Adjustment
- Music Volume: Adjusts the overall output volume.
- Bass, Treble: Fine-tune the low and high frequencies of the music.
- Balance: Adjusts the left/right channel balance.
- Mic Volume, Bass, Treble: Controls for microphone audio.
- Delay, Echo: Adds effects to microphone vocals for karaoke.
7. Remote Control
The included remote control provides convenient access to various functions:
- Mute: Mutes/unmutes audio.
- Mode: Cycles through input modes.
- EQ: Equalizer settings (if available).
- Vol+/Vol-: Adjusts volume.
- CH+/CH-: Channel selection (for FM radio).
- Play/Pause: Controls media playback.
- Prev/Next: Skips tracks or tunes radio stations.
- Repeat: Repeats current track.
- Number buttons: For direct song selection or radio frequency input.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the amplifier's exterior. Do not use liquid cleaners or aerosols.
- Ventilation: Ensure the ventilation openings are clear of dust and obstructions to prevent overheating.
- Storage: When not in use for extended periods, store the amplifier in a cool, dry place away from direct sunlight and extreme temperatures.
- Fuse Replacement: If the amplifier does not power on, check the fuse located on the rear panel. Replace it with a fuse of the same type and rating if necessary.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cord not connected; Power outlet faulty; Fuse blown. | Check power cord connection; Try a different outlet; Replace fuse with the same type and rating. |
| No sound output | Incorrect input mode; Speaker wires loose or incorrectly connected; Volume too low; Audio source issue. | Select correct input mode; Check all speaker and audio input connections; Increase volume; Verify audio source is playing. |
| Hissing from speakers (even when sound is off) | Ground loop interference; Faulty audio cables; Internal component issue. | Ensure all components are properly grounded; Try different audio cables; If problem persists, contact support. |
| Bluetooth not connecting | Amplifier not in BT mode; Device Bluetooth off; Device too far; Interference. | Switch to BT mode; Enable Bluetooth on device; Move device closer; Restart both devices. |
| USB/SD card not playing | Incorrect format (only MP3 supported); Card/drive faulty; Amplifier not in correct mode. | Ensure files are MP3; Try a different USB/SD card; Select USB/SD mode. |
Specifications
| Feature | Detail |
|---|---|
| Power Amplifier Type | AV Power Amplifier |
| Material | Metal |
| Color | Black |
| Channel | 5.0 Channel (4.1) |
| Power | 4000W (Peak) |
| Maximum Power Per Channel | Above 200W |
| Voltage | AC 110V-220V/50Hz (Specific voltage depends on model/region) |
| Signal to Noise Ratio | 90dB |
| Standard Impedance | 4 to 16Ω |
| Rated Frequency | 20Hz-20KHz |
| Total Harmonic Distortion | ≤ 0.5% |
| Connectivity | Bluetooth, USB, SD Card, FM Radio, 3x Microphone Inputs |
| Certification | CE |
| Dimensions (Approx.) | Length: 48cm, Width: 33cm, Height: 14cm |
| Weight (Approx.) | 4.0 kg |
User Tips
- Speaker Compatibility: This amplifier is designed to work with speakers below 10 inches. Ensure your speakers meet this specification for optimal performance.
- Microphone Usage: Experiment with the Delay and Echo controls to find the best vocal effects for karaoke or public speaking.
- Sound Quality: If you experience unexpected noise like hissing, first check all cable connections and ensure proper grounding. Sometimes, using higher quality audio cables can also help.
- Versatile Use: The amplifier is suitable for a wide range of applications including home audio, karaoke, small stage setups, and even in classrooms.
Warranty and Support
For any issues not covered in this manual, or for warranty claims, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.