1. Introduction
This manual provides essential instructions for the setup, operation, and maintenance of your Bobtot A55 5.1 Channel Home Theater System. Please read this manual thoroughly before using the product to ensure proper functionality and longevity.
2. Package Contents
Verify that all components listed below are included in your package:
- 1x 5.25" Subwoofer with built-in receiver
- 5x Wired Satellite Speakers
- 1x 3.5mm-RCA Audio Stereo Cable
- 1x FM Antenna Cable
- 1x Remote Control
- 1x Quick Start Guide (this manual)
- 1 Set Mounting Brackets and Screws

Image: All components included in the Bobtot A55 Home Theater System package.
3. Setup Instructions
3.1 Speaker Connections
Connect the five wired satellite speakers to the corresponding audio output ports on the rear panel of the subwoofer. Ensure each speaker cable is securely inserted into its designated port (FL, FR, CEN, SL, SR).

Image: Detailed view of the subwoofer's rear panel, highlighting the audio output connections for the satellite speakers.
3.2 Power Connection
Connect the power cable to the AC IN port on the subwoofer and then plug it into a standard 120V AC power outlet. Ensure the power switch is in the OFF position before connecting.
3.3 Speaker Placement
For optimal 5.1 surround sound, position the two front speakers (FL, FR) to the left and right of your viewing area, the center speaker (CEN) directly in front, and the two rear speakers (SL, SR) behind your listening position. The subwoofer (SW) can be placed near corners or walls to amplify low frequencies.

Image: Recommended speaker placement for an immersive 5.1 channel audio experience.
3.4 Setup Video Guide
For a visual guide on setting up your Bobtot A55 system, please watch the following video:
Video: A step-by-step guide demonstrating how to set up the Bobtot A55 Home Theater System, including speaker connections and input mode selection.
4. Operating Instructions
4.1 Power On/Off
After connecting all cables, flip the power switch on the rear panel of the subwoofer to the ON position. The system can then be put into standby or powered on using the remote control or the St.by button on the front panel.
4.2 Input Mode Selection
Press the 'Input' button on the subwoofer's control panel or the corresponding input buttons (BT, AUX, DVD, USB, SD, FM) on the remote control to switch between audio sources. Remember to press the power button on the remote before selecting an input mode if the unit is in standby.

Image: The multi-function remote control for the Bobtot A55 system, detailing various buttons and their functions.
4.3 Bluetooth Pairing
- Select the 'BT' input mode on the system.
- On your device (e.g., smartphone, tablet), enable Bluetooth and search for 'Bobtot A55'.
- Select 'Bobtot A55' to pair. A confirmation sound will indicate successful pairing.
4.4 FM Radio Operation
Connect the FM antenna cable to the 'FM ANT' port on the subwoofer's rear panel. Select 'FM' input mode. Use the remote control to scan for stations or manually tune to your desired frequency.
4.5 USB/SD Playback
Insert a USB drive or SD card into the respective port on the subwoofer. Select 'USB' or 'SD' input mode. The system will automatically begin playing compatible audio files. Use the remote control for playback functions (play, pause, skip, etc.).
4.6 Volume and EQ Adjustment
Adjust the overall system volume using the 'VOL+' and 'VOL-' buttons on the remote. The remote also allows for individual volume control of the front, center, surround, and subwoofer speakers. Press the 'EQ' button in USB/SD mode to cycle through preset equalizer curves such as Rock, Pop, Classic, Jazz, and Country.

Image: Illustration of various EQ modes available for audio customization.
5. Maintenance
5.1 Cleaning
To clean the system, unplug it from the power outlet. Use a soft, dry cloth to wipe down the surfaces of the subwoofer and satellite speakers. Avoid using liquid cleaners, aerosols, or abrasive materials, as these can damage the finish or internal components.
5.2 Storage
When not in use for extended periods, store the system in a cool, dry place away from direct sunlight and extreme temperatures. It is recommended to keep the original packaging for safe storage and transport.
6. Troubleshooting
If you encounter issues with your Bobtot A55 Home Theater System, refer to the following common problems and solutions:
- No Power: Ensure the power cable is securely connected to both the subwoofer and a working power outlet. Check the power switch on the rear panel is in the ON position.
- No Sound: Verify that the correct input mode is selected. Check all speaker connections to the subwoofer. Ensure the volume is not set to minimum or muted.
- Bluetooth Pairing Issues: Make sure the system is in Bluetooth mode and your device's Bluetooth is enabled and discoverable. Try unpairing and re-pairing the device.
- Distorted Sound: Reduce the volume level. Check speaker connections for loose wires. Ensure the audio source is not distorted.
- Remote Control Not Working: Check the batteries in the remote control. Ensure there are no obstructions between the remote and the subwoofer's sensor.
If problems persist, please refer to the Quick Start Guide for further assistance or contact customer support.
7. Specifications
| Feature | Specification |
|---|---|
| Model Name | A55 |
| Brand | Bobtot |
| Speaker Type | Satellite |
| Surround Sound Channel Configuration | 5.1 |
| Subwoofer Diameter | 5.25 Inches |
| Speaker Maximum Output Power | 600 Watts (Peak) |
| Connectivity Technology | Auxiliary, Bluetooth, RCA, SD, USB |
| Bluetooth Range | 10 Meters |
| Input Voltage | 120 Volts |
| Product Dimensions | 13.3"D x 12.8"W x 15.27"H |
| Item Weight | 12.54 pounds (5.7 Kilograms) |
| Material | Acrylonitrile Butadiene Styrene (ABS), Wood |
| Signal-to-Noise Ratio | 75 dB |
| Frequency Response | 20 KHz |
| Control Method | Remote, Touch |
8. Warranty and Support
The Bobtot A55 Home Theater System comes with a limited warranty. For specific details regarding warranty coverage and terms, please refer to the warranty information provided in the Quick Start Guide or contact Bobtot customer support.
For technical support or further inquiries, please consult the contact information provided in your product packaging or visit the official Bobtot website.





