1. Introduction
The Skar Audio SKAR2CH-LOC is a 2-channel line-out converter designed to integrate aftermarket amplifiers with factory or aftermarket head units that lack dedicated RCA outputs. This device converts high-level (speaker wire) audio signals into low-level (RCA) signals, enabling the connection of external amplifiers for enhanced audio performance. It is compatible with OEM radios, aftermarket radios, and smart radios, and applies a 60-ohm load to each channel to circumvent open-circuit protection found in some modern vehicle audio systems.
Image 1.1: Angled view of the Skar Audio SKAR2CH-LOC 2-Channel Line-Out Converter, showing its compact black housing and wiring harness.
2. Safety Information
Please read all instructions carefully before installation and use. Failure to follow these guidelines may result in damage to the product, vehicle, or personal injury.
- Professional Installation Recommended: For optimal performance and safety, professional installation by a qualified car audio technician is highly recommended.
- Disconnect Battery: Always disconnect the vehicle's negative battery terminal before performing any electrical work to prevent short circuits and electrical hazards.
- Proper Wiring: Ensure all wiring connections are secure and insulated to prevent short circuits. Do not route wires where they can be pinched, cut, or exposed to excessive heat or moisture.
- Voltage Limits: Do not exceed the maximum input signal voltage of 16 volts (55 watts) to avoid damaging the converter.
- Ventilation: Ensure the converter is installed in a location with adequate ventilation to prevent overheating.
3. Installation Guide
3.1. Before You Begin
- Gather necessary tools: wire strippers, crimpers, electrical tape or heat shrink, multimeter (optional).
- Identify the speaker wires from your head unit or factory amplifier that you intend to use as the input for the SKAR2CH-LOC.
- Plan the routing of all cables to ensure a clean and secure installation.
- Disconnect the vehicle's negative battery terminal.
3.2. Wiring Connections
The SKAR2CH-LOC features a multi-wire input harness and two RCA output jacks. Proper connection is essential for correct operation.
Image 3.1: Wiring diagram illustrating the connections for the Skar Audio SKAR2CH-LOC, detailing speaker inputs (left/right, positive/negative) and the ground wire leading to the RCA outputs.
- Speaker Input Wires: Connect the corresponding speaker wires from your head unit or factory speaker output to the input wires of the SKAR2CH-LOC. Ensure correct polarity (positive to positive, negative to negative). The harness typically includes color-coded wires for left and right channels.
- Left Speaker: Connect the left speaker positive (+) and negative (-) wires to the designated input wires on the converter.
- Right Speaker: Connect the right speaker positive (+) and negative (-) wires to the designated input wires on the converter.
- Ground Wire: Connect the ground wire from the SKAR2CH-LOC harness to a solid, clean metal chassis ground point in the vehicle. A good ground connection is critical for noise-free operation.
- RCA Output: Connect standard RCA cables from the SKAR2CH-LOC's RCA output jacks to the RCA input jacks of your aftermarket amplifier.
Image 3.2: Front view of the Skar Audio SKAR2CH-LOC, clearly showing the red (right channel) and white (left channel) RCA output jacks.
3.3. Post-Installation Checks
- Double-check all connections for security and proper insulation.
- Ensure the converter is mounted securely in a location free from excessive heat or moisture.
- Reconnect the vehicle's negative battery terminal.
4. Operation
The Skar Audio SKAR2CH-LOC operates automatically once properly installed and connected. It senses the high-level audio signal from your head unit and converts it into a clean, low-level RCA signal for your amplifier. The unit does not require external power or a remote turn-on lead, as it typically uses signal sensing to activate the connected amplifier (if the amplifier supports this feature).
4.1. Output Level
The converter provides RCA line outputs up to 8 Volts RMS. The output level is generally fixed relative to the input signal. Adjustments to the overall system volume should be made via your head unit, and fine-tuning of the amplifier's input gain should be performed according to the amplifier's instruction manual to match the SKAR2CH-LOC's output.
5. Maintenance
The SKAR2CH-LOC is designed for reliable, maintenance-free operation. To ensure longevity:
- Keep the unit free from dust and debris.
- Avoid exposing the unit to extreme temperatures or moisture.
- Periodically check wiring connections for tightness and corrosion.
6. Troubleshooting
If you experience issues with your SKAR2CH-LOC, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from amplifier | Incorrect wiring connections (speaker input, ground, RCA) Amplifier not turning on Head unit volume too low | Verify all wiring connections are secure and correct. Check amplifier's power and remote turn-on. Increase head unit volume. |
| Distorted or weak sound | Incorrect gain settings on amplifier Poor ground connection Damaged speaker wires or RCA cables | Adjust amplifier gain settings. Ensure a solid, clean ground connection. Inspect all cables for damage. |
| Engine noise or hum | Poor ground connection RCA cables routed too close to power wires Ground loop issue | Improve ground connection. Reroute RCA cables away from power cables. Consider a ground loop isolator if the issue persists. |
7. Specifications
The following are the technical specifications for the Skar Audio SKAR2CH-LOC:
| Feature | Specification |
|---|---|
| Model Number | SKAR2CH-LOC |
| Channels | 2-Channel |
| Input Signal Type | Speaker Wire (High-Level) |
| Output Signal Type | RCA (Low-Level) |
| Maximum Input Power | 55 Watts |
| Maximum Input Voltage | 16 Volts |
| Frequency Range | 20Hz - 20kHz (Flat) |
| Output Voltage | Up to 8 Volts RMS |
| Load Impedance | 60-ohm (applied to each channel) |
| Product Dimensions | 2 x 1 x 1 inches |
| Item Weight | 3.21 ounces |
| Manufacturer | Skar Audio |
| Date First Available | August 16, 2023 |
8. Warranty and Support
Skar Audio products are engineered for quality and performance. For specific warranty details, please refer to the warranty information provided with your purchase or visit the official Skar Audio website. Keep your proof of purchase for warranty claims.
For technical support, installation assistance, or any questions regarding your Skar Audio SKAR2CH-LOC, please contact Skar Audio customer service through their official website or the retailer from whom the product was purchased.
This manual is intended to provide general guidance. Specifications and features are subject to change without notice.
