Scosche LOC2SL
Scosche LOC2SL Line Output Converter User Manual
Model: LOC2SL
Introduction
The Scosche LOC2SL Line Output Converter is designed to seamlessly integrate aftermarket amplifiers with your vehicle's factory stereo system. It converts high-level speaker outputs to low-level RCA signals, enabling the addition of an amplifier or subwoofer for enhanced audio performance without replacing the entire head unit. This manual provides detailed instructions for installation, operation, and maintenance to ensure optimal performance and longevity of your device.
What's in the Box
- Scosche LOC2SL Line Output Converter Unit
- Remote Bass Control Knob with Cable
- Level Adjustment Tool
Setup and Installation
Proper installation is crucial for the performance of your LOC2SL. Please follow these steps carefully. It is recommended to disconnect the vehicle's battery before beginning installation.

Figure 1: Scosche LOC2SL Line Output Converter and Remote Control Knob.

Figure 2: The LOC2SL is designed as an amplifier add-on adapter, handling up to 80 watts of input per channel. It is easy to install and precision-designed.

Figure 3: The LOC2SL converts speaker outputs to RCA outputs and includes a mountable bass level control knob for convenient adjustment of subwoofer volume.

Figure 4: The LOC2SL converts 2-channel speaker level inputs to low-level RCA preamp outputs. It features independent L/R channel level adjustments and includes a level adjustment tool.

Figure 5: Detailed wiring diagram for connecting the LOC2SL to your car stereo, speakers, amplifier, and subwoofer, including power and remote turn-on connections.

Figure 6: Example of the LOC2SL installed in a vehicle, showing connections to an amplifier.
Installation Steps:
- Locate Speaker Wires: Identify the speaker wires from your factory stereo that you intend to use as input for the LOC2SL. These are typically found behind the stereo or at the factory amplifier location.
- Connect Input Wires: Connect the high-level speaker wires from your factory stereo to the corresponding input wires on the LOC2SL. Ensure correct polarity (positive to positive, negative to negative) for each channel (Left and Right). The LOC2SL also provides a signal sensing 12V remote output for your amplifier.
- Connect RCA Outputs: Connect the RCA output cables from the LOC2SL to the RCA input jacks on your aftermarket amplifier.
- Connect Remote Bass Knob: Plug the remote bass control knob into the designated port on the LOC2SL unit. Route the cable to a convenient location in your vehicle, such as under the dash, for easy access.
- Power Connections: Ensure your amplifier is properly powered according to its own manual, including main power, ground, and the remote turn-on wire from the LOC2SL.
- Secure the Unit: Mount the LOC2SL unit in a secure, dry location, away from excessive heat or moisture.
Installation Video Guide:
Video 1: Official SCOSCHE Car Stereo 2-Channel Adjustable Level Converter installation guide. This video demonstrates the setup and connection process for the LOC2SL, including level adjustments and remote knob installation.
Operating Instructions
Once installed, the LOC2SL requires minimal operation. The primary adjustments are for signal level and bass control.
- Level Adjustment: Use the included level adjustment tool to set the input sensitivity on the LOC2SL unit. There are independent adjustments for the Left (L) and Right (R) channels. Start with the levels at their minimum setting and slowly increase them until you achieve clear, undistorted audio from your amplifier. Avoid setting the levels too high, as this can introduce distortion.
- Remote Bass Control: The remote bass knob allows you to adjust the subwoofer output level conveniently from your driving position. Turn the knob clockwise to increase bass output and counter-clockwise to decrease it. Adjust to your preferred listening level.
Maintenance
The Scosche LOC2SL is designed for durability and requires minimal maintenance.
- Keep the unit and connections clean and free from dust and debris.
- Ensure all wiring connections remain secure to prevent signal loss or interference.
- Avoid exposing the unit to extreme temperatures or moisture.
Troubleshooting
If you experience issues with your Scosche LOC2SL, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No audio output from amplifier/subwoofer. |
|
|
| Distorted or poor sound quality. |
|
|
| Remote bass knob not working. |
|
|
If the problem persists after trying these solutions, please contact Scosche customer support.
Specifications
| Feature | Detail |
|---|---|
| Model Number | LOC2SL |
| Product Dimensions | 2.13 x 6.63 x 13.25 inches; 6.4 ounces |
| Voltage | 12 Volts |
| Maximum Supply Voltage | 12 Volts (DC) |
| Mounting Type | Surface Mount |
| Channels | 2-Channel (High/Low RCA) |
| Input Wattage (Max) | 80 Watts per channel |
Warranty and Support
The Scosche LOC2SL is backed by Scosche's Lifetime Tech Support and Limited Warranty. For detailed warranty information or technical assistance, please visit the official Scosche website or contact their customer support directly.
Scosche Website: www.scosche.com
Related Documents - LOC2SL
![]() |
Scosche LOC2SL Add-On Amplifier Adapter: Installation and User Guide Comprehensive guide for the Scosche LOC2SL, a line output converter that adds RCA outputs to your car stereo for amplifier installation. Includes wiring instructions, troubleshooting, and remote volume control setup. |
![]() |
Scosche FAI-4 Speaker Level Converter Amplifier Interface - Installation and Troubleshooting Guide This guide provides detailed instructions for installing and using the Scosche FAI-4 Speaker Level Converter Amplifier Interface. It covers wiring, gain adjustments, troubleshooting common issues, and warranty information for car audio systems. |
![]() |
Scosche LOC-80 Speaker Level Converter Installation and Wiring Guide Comprehensive guide for installing and using the Scosche LOC-80 Speaker Level Converter. Learn how to adjust output levels, wire connections professionally, and connect to your car stereo and amplifier for enhanced audio. |
![]() |
Scosche SLC-4 Speaker Level Converter Amplifier Interface Installation Guide This guide provides detailed instructions for installing the Scosche SLC-4 Speaker Level Converter Amplifier Interface, covering setup, gain adjustments, and troubleshooting for car audio systems. |
![]() |
Scosche ES-034 Stereo Installation Guide and Noise Filter Instructions Comprehensive installation guide for the Scosche ES-034 noise filter, providing step-by-step instructions and helpful hints to eliminate spark and whining noise in car audio systems. |
![]() |
Scosche 142 SAT6 Speaker Adaptor Bracket Installation Guide Installation instructions for the Scosche 142 SAT6 Speaker Adaptor Bracket, detailing tools required, parts supplied, and mounting procedures for vehicle audio systems. |
Ask a question about this manual
Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.





