1. Introduction
Thank you for choosing the ALIEN PRO L13 Audio System. This compact and elegant audio system is designed to deliver quality sound for various environments, from open spaces to home entertainment. It features a powerful 12-inch subwoofer and two satellite speakers, offering 180W RMS power. The system includes versatile connectivity options such as Bluetooth, USB, SD card, and FM radio, along with TWS (True Wireless Stereo) technology for linking two L13 units wirelessly. Please read this manual carefully before operating the device to ensure proper use and to maximize its performance.
2. Safety Information
To prevent fire, electric shock, or product damage, please observe the following safety precautions:
- Do not expose this appliance to rain or moisture.
- 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.
3. Setup Guide
3.1 Unpacking and Component Identification
Carefully unpack the ALIEN PRO L13 Audio System and ensure all components are present:
- 1 x 12-inch Subwoofer unit
- 2 x Satellite Speakers
- 1 x Power Cable
- 1 x User Manual (this document)
Inspect all components for any signs of damage. If any items are missing or damaged, contact your retailer immediately.
Figure 1: ALIEN PRO L13 Audio System (Subwoofer with two satellite speakers mounted)
3.2 Connecting the Satellite Speakers
The two satellite speakers connect directly to the subwoofer unit. Locate the speaker output terminals on the rear panel of the subwoofer. Connect each satellite speaker using appropriate speaker cables (not included, unless specified by retailer) to these terminals. Ensure correct polarity (+ to + and - to -) for optimal sound quality.
3.3 Power Connection
Connect the provided power cable to the AC IN port on the rear of the subwoofer unit. Plug the other end into a standard electrical outlet (110-240V AC, 50/60Hz). Ensure the power switch is in the OFF position before connecting to power.
Figure 2: Rear Control Panel of the ALIEN PRO L13 Subwoofer
This image shows the various input and output ports, including the power input, RCA inputs/outputs, USB/SD slots, microphone and guitar inputs, and control knobs for volume, equalizer, and effects.
4. Operating Instructions
4.1 Power On/Off
After connecting the power cable, flip the main power switch located on the rear panel of the subwoofer to the ON position. The display panel on the front/top of the subwoofer will illuminate, indicating the system is powered on.
4.2 Mode Selection
Press the 'MODE' button on the control panel to cycle through available input modes: Bluetooth (BT), USB, SD, FM Radio, and Line In (RCA).
4.3 Bluetooth Pairing
- Switch the system to Bluetooth mode using the 'MODE' button. The display will show "BT" and a pairing indicator will flash.
- On your mobile device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
- Select "ALIEN PRO L13" from the list of devices.
- Once paired, the system will emit a confirmation sound, and the Bluetooth indicator will stop flashing. You can now play audio from your device wirelessly.
4.4 USB/SD Playback
Insert a USB flash drive or an SD card (with MP3 audio files) into the respective slot on the control panel. The system will automatically switch to USB or SD mode and begin playing audio files. Use the playback controls (Play/Pause, Next/Previous Track) on the control panel to manage your music.
4.5 FM Radio Operation
- Switch the system to FM Radio mode.
- Press and hold the 'Play/Pause' button to initiate an automatic scan for FM stations. The system will save all found stations.
- Use the 'Next/Previous Track' buttons to navigate through the saved stations.
4.6 Microphone and Guitar Inputs
The L13 system features two microphone inputs and two guitar inputs. Connect your microphones or guitars to the corresponding 1/4" (6.35mm) jacks on the control panel. Adjust the individual volume knobs for each input as needed. The system also includes echo and delay effects for microphones, adjustable via dedicated knobs.
4.7 TWS (True Wireless Stereo) Functionality
To link two ALIEN PRO L13 systems for a true stereo experience:
- Ensure both L13 units are powered on and in Bluetooth mode, but not yet paired with any device.
- On one of the units (this will be the master unit), press and hold the 'TWS' button (if available, or a designated pairing button for TWS). The unit will search for another L13.
- Once connected, the master unit will indicate successful TWS pairing.
- Now, pair your Bluetooth device to the master L13 unit as described in section 4.3. Audio will play in stereo across both linked systems.
4.8 Equalizer and Tone Controls
The L13 system includes a 5-band equalizer and dedicated controls for bass and treble. Use these controls on the control panel to fine-tune the audio output to your preference and environment.
5. Maintenance
5.1 Cleaning
To clean the exterior of the unit, use a soft, dry cloth. Do not use abrasive cleaners, waxes, or solvents as they may damage the finish. Ensure the unit is unplugged before cleaning.
5.2 Storage
When not in use for extended periods, store the audio system in a cool, dry place, away from direct sunlight and extreme temperatures. It is recommended to keep the original packaging for storage and transport.
6. Troubleshooting
If you encounter any issues with your ALIEN PRO L13 Audio System, please refer to the following table for common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cable not connected; Power outlet faulty; Power switch off. | Ensure power cable is securely connected. Test the outlet with another device. Turn the power switch ON. |
| No sound output | Volume too low; Incorrect input mode; Satellite speakers not connected. | Increase master volume. Select the correct input mode. Check satellite speaker connections. |
| Bluetooth not pairing | System not in BT mode; Device too far; Already paired to another device. | Switch to BT mode. Move device closer. Disconnect from other devices and try again. |
| USB/SD not playing | Incorrect file format; USB/SD card faulty or empty; System not in USB/SD mode. | Ensure files are MP3 format. Try another USB/SD card. Switch to USB/SD mode. |
| TWS not connecting | One unit already paired to a device; Units too far apart. | Ensure both L13 units are in BT mode and not paired to any device before initiating TWS. Move units closer. |
7. Technical Specifications
| Feature | Specification |
|---|---|
| Brand | ALIEN PRO |
| Model | L13 |
| Speaker Type | Subwoofer with 2 Satellites |
| Max Output Power | 180 Watts RMS |
| Subwoofer Diameter | 12 Inches |
| Connectivity Technology | Bluetooth, RCA, USB |
| Wireless Technology | Bluetooth (TWS compatible) |
| Audio Output Mode | Stereo (2.0 Channels) |
| Control Method | Tactile (Control Panel) |
| Inputs | 2 x Microphone, 2 x Guitar, RCA Line In, USB, SD Card |
| Outputs | RCA Line Out |
| Power Source | Electric Cable |
| Recommended Uses | Smartphones, Tablets, Laptops, Game Consoles, Portable Use, Outdoor Activities, Home Entertainment |
| Color | Black |
8. Warranty Information
ALIEN PRO products are manufactured to the highest quality standards. For specific warranty terms and conditions, please refer to the warranty card included with your product or contact your local retailer. Keep your purchase receipt as proof of purchase for any warranty claims.
9. Customer Support
If you have any questions, require technical assistance, or need further support regarding your ALIEN PRO L13 Audio System, please contact ALIEN PRO customer service or your authorized dealer. Contact information can typically be found on the product packaging or the official ALIEN PRO website.



