1. Introduction
Thank you for purchasing the SOBATTY Audio AV 298BT Bluetooth 5.0 Stereo Amplifier. This manual provides essential information for the safe and efficient operation of your device. Please read it thoroughly before use and retain it for future reference.
Image 1.1: The SOBATTY AV 298BT Stereo Amplifier with its included remote control.
2. Safety Information
To ensure safe operation and prevent damage, please observe the following guidelines:
- Do not expose the amplifier to rain, moisture, or extreme temperatures.
- Avoid placing the unit in direct sunlight or near heat sources.
- Ensure proper ventilation; do not block any ventilation openings.
- Do not open the amplifier casing. Refer all servicing to qualified personnel.
- Use only the specified power supply (12V DC or 220V AC).
- Keep out of reach of children.
- Disconnect power during lightning storms or when unused for long periods.
3. Package Contents
Verify that all items are present in the package:
- SOBATTY AV 298BT Stereo Amplifier
- Remote Control
- User Manual (this document)
4. Product Overview
4.1 Front Panel
Image 4.1: Detailed view of the amplifier's front and back panels with labeled components.
- Power Button: Turns the unit on or off.
- USB Port: For USB flash drives.
- SD/MMC Card Slot: For SD or MMC memory cards.
- Function Display Window: Shows current mode and track information.
- Bass Adjustment Knob: Adjusts low-frequency output.
- Treble Adjustment Knob: Adjusts high-frequency output.
- Mic Volume Control: Adjusts microphone input volume.
- MIC1/MIC2 Input Jacks: 6.35mm inputs for microphones.
- Mode Button: Cycles through input sources (Bluetooth, USB, SD, FM, AUX).
- MP3 Function Buttons: Play/Pause, Previous/Next track, Radio Auto Scan.
- Master Volume Knob: Controls the overall output volume.
4.2 Back Panel
Image 4.2: Rear view of the amplifier showing audio input, speaker outputs, and power connections.
- Audio Input (RCA L/R): Connect external audio sources (e.g., CD player, TV).
- Speaker Terminals (L+/L-, R+/R-): Connect passive speakers (4Ω-16Ω).
- DC12V Input: For 12V DC power supply (e.g., car battery).
- FM Antenna: Extend for improved FM radio reception.
- Built-in Power Cable: For 220V AC power supply.
5. Setup Instructions
Follow these steps to set up your amplifier:
5.1 Connecting Speakers
- Ensure the amplifier is powered off and unplugged.
- Connect your passive speakers to the speaker terminals on the back panel. Match the positive (+) and negative (-) terminals for each channel (Left and Right). The amplifier supports speakers with an impedance of 4Ω to 16Ω.
5.2 Power Connection
- For home use, plug the built-in power cable into a standard 220V AC wall outlet.
- For car or portable use, connect a 12V DC power source to the DC12V input jack.
- Do not connect both AC and DC power simultaneously.
5.3 Audio Input Connection
- RCA Input: Connect external audio devices (e.g., DVD player, TV, computer) to the L/R Audio Input jacks using an RCA cable.
- USB/SD Card: Insert a USB flash drive or SD/MMC card into the respective slot on the front panel. The amplifier will automatically switch to USB/SD mode and begin playback.
5.4 Microphone Connection
- Connect up to two microphones to the MIC1 and MIC2 input jacks on the front panel.
- Adjust the microphone volume using the 'MIC VOL' knob.
Image 5.1: Example setup showing the amplifier connected to speakers and a display for media playback.
6. Operating Instructions
6.1 Powering On/Off
Press the 'POWER' button on the front panel to turn the amplifier on or off.
6.2 Source Selection
Press the 'MODE' button on the front panel or the remote control to cycle through available input sources: Bluetooth, USB, SD, FM Radio, and AUX (RCA input).
6.3 Volume and Tone Control
- Master Volume: Rotate the large 'VOLUME' knob on the front panel to adjust the overall sound level.
- Bass/Treble: Use the 'BASS' and 'TREBLE' knobs to fine-tune the low and high frequencies of the audio output.
6.4 Bluetooth Mode
- Switch the amplifier to Bluetooth mode using the 'MODE' button. The display will show 'BLUE'.
- On your mobile device, enable Bluetooth and search for available devices.
- Select 'AV 298BT' from the list to pair. A confirmation sound will indicate successful pairing.
- You can now play audio from your device through the amplifier.
6.5 USB/SD Card Playback
When a USB drive or SD card is inserted, the amplifier will automatically switch to the corresponding mode and begin playing compatible audio files. Use the MP3 function buttons (Play/Pause, Previous/Next) to control playback.
6.6 FM Radio
- Switch to FM mode using the 'MODE' button.
- Extend the FM antenna on the back panel for better reception.
- Press the 'AUTO' button (or similar on remote) to automatically scan and save available radio stations.
- Use the CH+/CH- buttons to navigate through saved stations.
6.7 Remote Control
The included remote control allows for convenient operation from a distance. It provides functions such as power on/off, mode selection, volume control, track navigation, EQ presets, and number input for direct track selection.
Image 6.1: The amplifier with a microphone and remote control, highlighting its karaoke and home theater capabilities.
7. Maintenance
To maintain the performance and longevity of your amplifier:
- Clean the unit with a soft, dry cloth. Do not use liquid cleaners or aerosols.
- Keep the ventilation openings clear of dust and debris.
- Store the amplifier in a cool, dry place when not in use.
8. Troubleshooting
If you encounter issues, refer to the table below for common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cable not connected; Power outlet faulty; Power switch off. | Check power connections; Try a different outlet; Ensure power switch is on. |
| No sound output | Incorrect input source; Speaker wires loose; Volume too low; Mute activated. | Select correct input mode; Reconnect speaker wires securely; Increase volume; Check for mute function. |
| Bluetooth not pairing | Amplifier not in Bluetooth mode; Device too far; Bluetooth disabled on source. | Switch amplifier to Bluetooth mode; Move device closer; Enable Bluetooth on your source device. |
| Poor FM reception | Antenna not extended; Weak signal. | Fully extend the FM antenna; Try repositioning the amplifier. |
| Distorted sound | Volume too high; Incorrect impedance speakers; Faulty audio source. | Reduce volume; Ensure speakers are 4Ω-16Ω; Test with a different audio source. |
9. Technical Specifications
| Feature | Specification |
|---|---|
| Brand | SOBATTY |
| Model | AV 298BT (Model 326) |
| Connectivity Technology | Bluetooth 5.0, USB, SD Card, RCA (AUX), FM Radio |
| Audio Output Mode | Stereo (2 Channels) |
| Rated Power | 30W |
| Peak Power | 300W |
| Speaker Impedance | 4Ω - 16Ω |
| Voltage Input | 220V AC / 12V DC |
| Dimensions (L x W x H) | 18 x 14 x 5.5 cm |
| Weight | 850 g |
| Compatible Devices | Smartphone, PC, Tablet, Speaker, TV |
Image 9.1: Dimensions of the SOBATTY AV 298BT Amplifier.
10. Warranty and Support
This product is covered by a standard manufacturer's warranty. For specific warranty details, please refer to the documentation provided at the time of purchase or contact your retailer. For technical support or service inquiries, please reach out to SOBATTY customer service through your purchase platform.