1. Product Overview
The Sunbuck AV-555BT and AV-999BT are high-performance multifunctional audio power amplifiers designed for home theater, KTV, and commercial audio applications. These amplifiers feature built-in Bluetooth connectivity, dual dynamic digital displays, and multiple input options, delivering immersive sound and versatile audio playback.
The AV-999BT model offers 7-channel output with a maximum power of 4000W, while the AV-555BT model provides 5-channel output with a maximum power of 2500W. Both models include FM radio, USB/SD card playback, and microphone inputs for a comprehensive audio experience.
2. Safety Information
- Operating Environment: Use the amplifier in a well-ventilated area away from direct sunlight, moisture, heat sources, and excessive dust.
- Voltage Selection: Ensure you select the appropriate voltage (US Plug is 110V; EU Plug is 220V) according to your country's power supply to avoid damaging the amplifier.
- Overload Protection: Avoid operating the amplifier at maximum volume for extended periods to prevent overheating and component damage.
- Cleaning: Use a dry, soft cloth to wipe the exterior. Do not use liquid cleaners or aerosols directly on the unit.
- Cable Management: Ensure all cables are properly routed and secured to prevent tripping hazards and accidental disconnections.
- Emergency Procedures: If you notice unusual smells, smoke, or noises, immediately turn off the power and disconnect the cord. Do not attempt to repair the unit yourself; contact authorized service personnel.
3. Package Contents
The package for both AV-555BT and AV-999BT models typically includes:
- 1 x Audio Power Amplifier (AV-555BT or AV-999BT)
- 1 x Remote Control
- 1 x FM Antenna
- 1 x User Manual
- 1 x Power Cord
- 1 x Audio Cable
- 1 x 32GB USB Card (gift, subject to actual packaging)
4. Setup and Connection
4.1 Power Connection
- Connect the power cord to the AC power input on the rear panel.
- Plug the other end into a grounded electrical outlet (110V for US Plug, 220V for EU Plug).
- Ensure the power switch is in the "OFF" position before connecting to the power supply to prevent damage from inrush current.
4.2 Speaker Connection
Use high-quality speaker wires to connect the speaker terminals on the rear panel to your speakers. Observe polarity markings (red = positive, black = negative) to ensure correct phasing and avoid audio distortion. Secure all connections tightly.
4.3 Audio Source Connection
- Bluetooth Pairing: Power on the amplifier, select the "Bluetooth" input mode. Enable Bluetooth on your device and search for "AV-999BT" (or similar) in the device list to pair.
- USB/SD Card Playback: Insert a USB flash drive or SD card into the corresponding slots. The amplifier will automatically detect and play supported audio files (MP3, WMA, WAV, etc.).
- AUX Input: Use a 3.5mm audio cable or RCA connectors to link external audio devices (TV, DVD player, CD player) to the AUX input terminals.
- FM Radio: Connect the included FM antenna to the antenna terminal on the rear panel. Extend the antenna for optimal reception and use the tuning controls to select stations.
4.4 Microphone Connection
Plug microphones into the front-panel MIC1, MIC2, and MIC3 jacks (AV-999BT) or wired/wireless mic sockets (AV-555BT). Adjust the MIC VOL and ECHO controls for each channel to optimize vocal performance and avoid feedback.
5. Operating Instructions
5.1 Front Panel Controls
- Power Switch: Turns the amplifier on or off.
- Input Selector (Function Selection): Cycles through available input sources (Bluetooth, USB, SD, AUX, FM).
- Master Volume Knob: Controls the overall audio output level.
- EQ Adjustments:
- TREBLE: Adjusts the high-frequency response.
- BASS: Adjusts the low-frequency response.
- BALANCE: Adjusts the left-right speaker balance.
- Microphone Controls:
- MIC1/MIC2/MIC3 VOL: Adjusts the input volume for each microphone.
- ECHO: Adjusts the reverb effect for vocal enhancement.
- Dual Dynamic Displays: Show input source, volume level, frequency spectrum, and playback status.
5.2 Basic Operation Steps
- Connect all necessary cables (power, speakers, audio sources, microphones) and ensure they are secure.
- Turn on the power switch. The amplifier will initialize and the displays will activate.
- Select your desired input source using the input selector button.
- Gradually increase the master volume to a comfortable listening level.
- Adjust the EQ settings and microphone controls to optimize the audio output.
- When finished, lower the master volume to the minimum, turn off the power switch, and disconnect the power cord.
6. Maintenance
- Cleaning: Use a dry, soft cloth to wipe the exterior. Do not use liquid cleaners or aerosols directly on the unit.
- Cable Management: Ensure all cables are properly routed and secured to prevent tripping hazards and accidental disconnections.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound output | Power not connected, incorrect input source, loose speaker connections | Check power cord, select correct input, re-secure speaker cables |
| Bluetooth connection failure | Device out of range, Bluetooth disabled, signal interference | Move device closer, enable Bluetooth, reduce interference from other devices |
| Microphone feedback | Volume too high, microphone too close to speakers | Lower mic volume, reposition microphone away from speakers |
| Poor FM reception | Antenna not connected, weak signal | Connect antenna, adjust antenna position, move to a different location |
| Distorted audio | Overloaded input, incorrect EQ settings | Reduce input level, reset EQ to default settings |
8. Specifications
8.1 AV-999BT Model
| Item | Specification |
|---|---|
| Model Number | AV-999BT |
| Output Channels | 7.0 Channel |
| Maximum Power | 4000W (Peak) |
| Rated Power | 400W |
| Bluetooth | Built-in Bluetooth module (Bluetooth 5.0) |
| Display | Dual dynamic digital screens |
| Input Interfaces | USB, SD card, AUX, FM radio, Bluetooth, 3x Microphone inputs |
| Output Interfaces | 7 groups of speaker terminals |
| Power Supply | AC 110V-240V / 50Hz (selected according to region) |
| Standard Impedance | 4 to 16Ω |
| Frequency Response | 20Hz-20KHz (+/-10dB) |
| Signal to Noise Ratio | ≥90dB (A-weighting) |
| Total Harmonic Distortion | ≤0.5% (Normal working conditions) |
| Input Sensitivity | 150mV (AV-999BT), 200mV (+-30MV) (general) |
| Recording Level Output | ≈1V |
| Auxiliary Level Output | ≈1V |
| Dimensions (L x W x H) | 430mm x 310mm x 130mm |
| Weight | 7.5kg |
| Certification | CE |
8.2 AV-555BT Model
| Item | Specification |
|---|---|
| Model Number | AV-555BT |
| Output Channels | 5.0 Channel |
| Maximum Power | 2500W (Peak) |
| Rated Power | 250W (Main channel 250W+250W, surround 100W+100W, center 100W) |
| Bluetooth | Built-in Bluetooth module |
| Display | Dual dynamic screen |
| Input Interfaces | SD Card, U disk, MP3, Bluetooth, 2x Wired microphone, 1x Wireless microphone |
| Output Interfaces | 5 channel speaker output |
| Power Supply | AC 110V/220V / 50Hz (selected according to region) |
| Standard Impedance | 4 to 16Ω |
| Frequency Response | 20Hz-20KHz |
| Signal to Noise Ratio | 90dB |
| Total Harmonic Distortion | ≤0.5% |
| Machine Net Weight | 4.3kg |
| Certification | CE |
9. User Tips
- Understanding Power Ratings: The advertised 4000W (AV-999BT) and 2500W (AV-555BT) refer to the peak power output. The continuous or rated power is typically lower (e.g., 400W for AV-999BT). This is common for audio equipment and indicates the maximum power the amplifier can handle for short bursts.
- Voltage Compatibility: Always double-check the voltage requirement for your specific model (US Plug is 110V; EU Plug is 220V) before plugging it in to prevent damage.
- Speaker Matching: For optimal sound quality and to prevent damage, ensure your speakers' impedance matches the amplifier's load impedance range (4 to 16Ω).
- Antenna for FM: Always connect and extend the FM antenna for the best radio reception.
10. Warranty and Support
This product is covered by a manufacturer's warranty against defects in materials and workmanship for a period of 12 months from the date of purchase. For warranty claims, please contact the official customer service center with your purchase receipt and product details.
For more detailed information, please refer to the official user manual PDF: Sunbuck Amplifier User Manual (PDF)