1. Introduction
Thank you for choosing the Sunbuck 6188BT 2.1 Channel AV Amplifier. This high-power amplifier is designed to enhance your home audio experience, offering versatile connectivity options including Bluetooth, SD card, USB, and FM radio, along with dedicated inputs for karaoke microphones. Please read this manual thoroughly before operating the device to ensure proper use and to maximize its performance and longevity.
2. Important Safety Instructions
- Read all instructions carefully before use.
- Keep this manual for future reference.
- Do not expose the amplifier to rain or moisture to prevent fire or electric shock.
- Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
- Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
- Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
- Only use attachments/accessories specified by the manufacturer.
- Unplug this apparatus during lightning storms or when unused for long periods of time.
- Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
3. Package Contents
Please check the box for the following items:
- 1 x Sunbuck 6188BT AV Amplifier
- 1 x Remote Control
- 1 x Instruction Manual
4. Front Panel Controls
- POWER Switch: Turns the amplifier on or off.
- ECHO Control: Adjusts the echo effect for microphones.
- DELAY Control: Adjusts the delay time for microphone echo.
- BASS Control: Adjusts the low-frequency output.
- TREBLE Control: Adjusts the high-frequency output.
- BALANCE Control: Adjusts the left/right channel balance.
- MIC1/VOL & MIC2/VOL: Volume controls for Microphone 1 and Microphone 2.
- MIC INPUT: 6.35mm jacks for connecting microphones.
- SD/USB/FM/BT DIGITAL PLAY Section:
- USB Port: For connecting USB flash drives.
- SD Card Slot: For inserting SD memory cards.
- MODE Button: Switches between SD, USB, FM, and Bluetooth input modes.
- PLAY/PAUSE Button: Plays or pauses media playback.
- PREV/NEXT Buttons: Skips to the previous or next track/station.
- REPEAT Button: Repeats the current track or playlist.
- Digital Display: Shows current mode, track number, FM frequency, etc.
- MASTER VOLUME: Main volume control for all audio output.
5. Rear Panel Connections
- FM ANTENNA: Connection for the FM radio antenna.
- AUDIO INPUT (VCD, CD, LINE): RCA jacks for connecting external audio sources like DVD/VCD players, CD players, or other line-level devices.
- AUDIO OUTPUT: RCA jacks for connecting to other audio equipment.
- SPEAKERS SYSTEM (RIGHT/LEFT, SPKOUT 4Ω-8Ω): Speaker terminals for connecting passive speakers. Ensure correct polarity (+ to + and - to -).
- POWER DC12V INPUT (5A-10A): DC power input for 12V operation (e.g., car battery).
- AC INPUT (220V/50Hz or 110V): AC power input for mains electricity. Ensure the correct voltage version is used for your region.
6. Setup Guide
- Placement: Place the amplifier on a stable, flat surface with adequate ventilation. Avoid placing it near heat sources or in direct sunlight.
- Connect Speakers: Connect your passive speakers to the SPEAKERS SYSTEM terminals on the rear panel. Ensure the impedance of your speakers is between 4-16 ohms. Match the positive (+) terminal of the amplifier to the positive (+) terminal of the speaker, and the negative (-) to the negative (-). The amplifier supports connecting 2 speakers and 1 active subwoofer.
- Connect Audio Sources:
- For external devices (DVD, CD, PC), connect them to the AUDIO INPUT (VCD, CD, LINE) RCA jacks using appropriate cables.
- For FM radio, extend the FM ANTENNA for better reception.
- Connect Power: Connect the amplifier to a power outlet using the provided AC power cord. Ensure the voltage matches your local power supply (110V or 220V). Alternatively, for DC operation, connect a 12V DC power source (5A-10A) to the POWER DC12V INPUT.
- Initial Power On: Ensure all connections are secure. Turn the MASTER VOLUME knob to minimum. Press the POWER switch to turn on the amplifier.
7. Operating Instructions
Video 1: Product demonstration and feature showcase.
7.1 Source Selection
Press the MODE button on the front panel or remote control to cycle through input sources: SD, USB, FM, Bluetooth, and Line In (VCD/CD/LINE inputs).
7.2 Volume and Tone Control
- Adjust the overall sound level using the MASTER VOLUME knob.
- Use the BASS and TREBLE knobs to fine-tune the low and high frequencies of the audio.
- The BALANCE knob adjusts the left/right channel output.
7.3 Bluetooth Operation
- Switch the amplifier to Bluetooth mode using the MODE button. The digital display will show "BT" or similar.
- Enable Bluetooth on your mobile device (smartphone, tablet, etc.) and search for available devices.
- Select "6188BT" from the list of devices to pair.
- Once paired, you can play audio from your device through the amplifier.
7.4 USB/SD Card Playback
- Insert a USB flash drive into the USB Port or an SD card into the SD Card Slot.
- Switch the amplifier to USB or SD mode using the MODE button. The amplifier will automatically detect and play compatible audio files.
- Use the PLAY/PAUSE, PREV/NEXT, and REPEAT buttons to control playback.
7.5 FM Radio Operation
- Switch the amplifier to FM mode using the MODE button.
- Use the PREV/NEXT buttons to manually tune to stations or long-press them to auto-scan.
- Ensure the FM antenna is properly extended for optimal reception.
7.6 Karaoke Function
- Connect up to two microphones to the MIC INPUT jacks on the front panel.
- Adjust the individual microphone volumes using the MIC1/VOL and MIC2/VOL knobs.
- Use the ECHO and DELAY controls to add vocal effects.
8. Maintenance
- Cleaning: Disconnect the power before cleaning. Use a soft, dry cloth to wipe the exterior of the amplifier. Do not use liquid cleaners or aerosol cleaners.
- Ventilation: Ensure the ventilation openings are clear of dust and debris to prevent overheating.
- Storage: If not in use for an extended period, unplug the amplifier and store it in a cool, dry place.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cord not connected; Power switch off; No power from outlet. | Check power cord connection; Turn on power switch; Test outlet with another device. |
| No sound output | Incorrect input source selected; Speaker cables loose/incorrectly connected; Master volume too low; Mute activated. | Select correct input source; Check speaker connections and polarity; Increase master volume; Check if mute is active on remote. |
| Poor sound quality | Loose connections; Incorrect tone settings; Low-quality audio source. | Check all audio connections; Adjust Bass/Treble controls; Try a different audio source. |
| Bluetooth not connecting | Amplifier not in Bluetooth mode; Device too far; Interference. | Ensure amplifier is in BT mode; Move device closer; Restart both devices. |
| FM radio static | Poor antenna reception; Weak signal. | Adjust FM antenna position; Try auto-scan for stronger stations. |
| Microphone not working | Microphone not connected; MIC VOL knob too low; Microphone faulty. | Ensure microphone is fully plugged in; Increase MIC VOL; Test with another microphone. |
10. Specifications
| Feature | Specification |
|---|---|
| Brand | Sunbuck |
| Model | 6188BT |
| Rated Voltage | DC 12V / AC 110V or 220V (50Hz) |
| Peak Power | 300W + 300W |
| Rated Power | 150W + 150W |
| Maximum Power Per Channel | 131-200W |
| Impedance | 4-16 ohms |
| Amplifier Type | AV Amplifier (HiFi) |
| Channel | 2.1 Channel |
| Dimensions (L x W x H) | 350mm x 290mm x 100mm |
| Weight | 4.5 KG |
| Input Sensitivity | 100mV (Amplifier), 300mV (Karaoke) |
| Input Resistance | 47KΩ |
| Signal to Noise Ratio | >80dB (Amplifier), ≥95dB (A weighting, Karaoke) |
| Chopper Distortion | <0.01% |
| Frequency Response | 20Hz-40KHz |
| Loss Sensitivity | 100mV < 500mV |
| Bass Adjustment | ±12dB (100Hz) |
| Treble Adjustment | ±12dB (100Hz) |
| Microphone Output Sensitivity | >10mV < 30mV |
| Microphone Input Blocking | 600 ohms |
| Digital Reverberation Time | 200mT-50mT |
| Distortion (Karaoke) | ≤0.02% |
| Microphone Sensitivity | ≤ 25 mV |
| Features | Power-off memory playback, Switching machine speaker protection, Short circuit protection, Overload protection, USB/SD playback, FM radio, Bluetooth. |
11. User Tips
- For optimal sound, ensure your speakers' impedance matches the amplifier's recommended range (4-16 ohms).
- When connecting multiple audio sources, always start with the master volume low to avoid sudden loud sounds.
- Experiment with the ECHO and DELAY controls for microphones to find the best karaoke effect for your voice.
- If using the 12V DC input, ensure the power supply can provide sufficient current (5A-10A) for stable operation.
12. Warranty and Support
Sunbuck products are manufactured to high-quality standards. For any issues or questions regarding your amplifier, please contact the seller or manufacturer's customer support. Keep your purchase receipt as proof of purchase for warranty claims.
