Introduction
Thank you for purchasing the AV-628BT Home 5-Channel Audio Amplifier. This amplifier is designed to provide high-quality audio for your home entertainment system, featuring 5-channel output, Bluetooth connectivity for wireless streaming, and karaoke functions. Please read this manual carefully before operating the device to ensure proper use and to maximize its performance and longevity.
Safety Instructions
- Ensure the amplifier is connected to a 220V power supply.
- Do not expose the unit to rain or moisture to prevent fire or electric shock.
- Do not open the amplifier casing. Refer all servicing to qualified personnel.
- Place the unit in a well-ventilated area, away from direct sunlight, heat sources, or excessive dust.
- Keep children away from the unit.
Setup
Package Contents
- AV-628BT Amplifier Unit
- Remote Control
- User Manual (this document)
Front Panel Overview
The front panel features controls for volume, tone adjustments, input selection, and media playback. It also includes a display for status information, USB/SD card slots, and microphone inputs.
Figure 1: AV-628BT Amplifier Front Panel
Rear Panel Connections
The rear panel provides all necessary ports for connecting speakers, audio sources, and power.
Figure 2: AV-628BT Amplifier Rear Panel and Remote Control
- Speaker Connections: Connect your passive speakers (suitable for 10-inch speakers) to the speaker terminals on the rear panel. Ensure correct polarity (+ to + and - to -) for each speaker. This amplifier supports 5-channel audio output.
- Audio Input (RCA): Connect external audio sources (e.g., DVD player, CD player, TV) to the RCA input jacks using appropriate RCA cables.
- Power Connection: Connect the power cord to the amplifier's power input and then to a standard 220V AC outlet.
- Antenna: Ensure the antenna (if provided) is properly connected and extended for optimal signal reception (e.g., for Bluetooth or FM radio, if applicable).
Operating Instructions
Power On/Off
- Press the Power button on the front panel or the remote control to turn the amplifier on or off.
Input Source Selection
- Use the 'Mode' or 'Input' button on the front panel or remote control to cycle through available input sources: Bluetooth, USB, SD Card, and RCA (AUX).
Bluetooth Pairing
- Select 'Bluetooth' mode on the amplifier. The display will indicate 'BT' or 'PAIRING'.
- Enable Bluetooth on your mobile device (smartphone, tablet, etc.).
- Search for available devices and select 'AV-628BT' from the list.
- Once connected, the amplifier will confirm the connection, and you can stream audio wirelessly.
USB/SD Card Playback
- Insert a USB drive or SD card into the respective slot on the front panel.
- The amplifier will automatically switch to USB/SD mode and begin playing compatible audio files.
- Use the playback controls (Play/Pause, Next, Previous) on the front panel or remote control.
Karaoke Function
- Connect microphones to the microphone input jacks on the front panel.
- Adjust microphone volume and echo effects using the dedicated controls on the front panel.
Audio Adjustments
- Volume: Rotate the 'Volume' knob on the front panel or use the volume buttons on the remote control.
- Treble/Bass: Use the 'Treble' and 'Bass' knobs to adjust high and low frequencies.
- Balance: Adjust the 'Balance' knob to control the left/right channel output.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior of the amplifier. Do not use liquid cleaners or aerosols.
- Ventilation: Ensure that the ventilation openings on the unit are not blocked. Proper airflow is crucial to prevent overheating.
- Storage: If storing the amplifier for an extended period, disconnect it from the power supply and store it in a cool, dry place.
- Power Cord: Regularly check the power cord for any damage. If damaged, replace it immediately with an approved cord.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cord not connected; Power outlet faulty; Amplifier fuse blown | Check power cord connection; Try a different outlet; Contact service for fuse replacement |
| No sound output | Incorrect input selected; Speaker wires loose/incorrectly connected; Volume too low; Mute function active | Select correct input source; Check speaker connections and polarity; Increase volume; Deactivate mute |
| Bluetooth connection issues | Device not in pairing mode; Amplifier too far from device; Interference | Ensure amplifier is in Bluetooth pairing mode; Move device closer; Reduce interference from other wireless devices |
| Microphone not working | Microphone not connected properly; Microphone volume too low; Faulty microphone | Check microphone connection; Increase microphone volume; Try a different microphone |
| Distorted sound | Volume too high; Speaker impedance mismatch; Faulty audio source | Reduce volume; Ensure speakers are compatible; Test with a different audio source |
Specifications
| Feature | Detail |
|---|---|
| Model | AV-628BT |
| Type | Home 5-Channel Audio Amplifier with Bluetooth and Karaoke |
| Dimensions (L x W x H) | 430mm x 220mm x 60mm |
| Weight | 3.5 KG |
| Power Supply | 220V AC |
| Speaker Compatibility | Suitable for approximately 10-inch speakers |
| Inputs | Bluetooth, USB, SD Card, RCA (AUX), Microphone |
| Channels | 5-Channel Audio Output |
User Tips
- For best Bluetooth performance, ensure your streaming device is within a few meters of the amplifier and there are no major obstructions.
- When using the karaoke function, adjust the microphone volume and echo effects gradually to avoid feedback.
- Always power off the amplifier before connecting or disconnecting speakers or other audio devices to prevent damage.
- If you experience any hum or noise, check all cable connections for tightness and proper shielding.
Warranty and Support
This product is covered by a standard manufacturer's warranty. For specific warranty terms and conditions, please refer to the documentation provided at the time of purchase or contact your retailer. If you encounter any issues or require technical assistance, please reach out to the seller or manufacturer's customer support. Keep your purchase receipt as proof of purchase.