PAC LP5-2 L.O.C. PRO Series 2-Channel Line Output Converter User Manual

Introduction

The PAC LP5-2 L.O.C. PRO Series 2-Channel Line Output Converter is engineered to optimize audio levels between your vehicle's radio and an aftermarket amplifier. This device ensures the best audio performance and helps to avoid unwanted noise, making it ideal for integrating an amplifier into an OEM (Original Equipment Manufacturer) audio system. It features a full 20-20kHz +/-1.5dB frequency response and a single-dial, precision-matched stereo gain adjustment.

Safety Information

• Always disconnect the vehicle's battery negative terminal before installing any electrical components to prevent electrical shock or damage.
• Ensure all wiring connections are secure and properly insulated to prevent short circuits.
• Do not install the device in locations where it may be exposed to excessive heat, moisture, or direct sunlight.
• Consult a professional car audio installer if you are unsure about any part of the installation process.
• This product is designed for 12V DC automotive electrical systems only.

Package Contents

Image: The PAC LP5-2 Line Output Converter unit, a multi-wire harness with RCA connectors, and a small blue-handled screwdriver.

• PAC LP5-2 Line Output Converter Unit
• Wiring Harness with RCA Outputs
• Small Screwdriver (for gain adjustment)

Setup and Installation

The LP5-2 converts speaker-level audio signals from your factory radio into low-level RCA signals, which are required by most aftermarket amplifiers. Follow these general steps for installation:

1. Disconnect Battery: Before starting, disconnect the negative terminal of your vehicle's battery.
2. Identify Speaker Wires: Locate the speaker output wires from your factory radio or amplifier. You will need to identify the positive and negative wires for the left and right channels.
3. Connect Input Wires: Connect the speaker-level input wires from the LP5-2 harness to the corresponding speaker wires from your factory system. Ensure correct polarity (positive to positive, negative to negative).
   • Typically, the LP5-2 harness will have clearly labeled wires for Left Speaker (+/-) and Right Speaker (+/-).
4. Connect Power and Ground: Connect the LP5-2's power wire (usually red) to a switched 12V power source, and the ground wire (usually black) to a solid chassis ground point.
5. Connect Remote Turn-On: The LP5-2 features a remote turn-on output (usually blue wire) that can be used to turn on your aftermarket amplifier. Connect this wire to the remote input of your amplifier.
6. Connect RCA Outputs: Plug the RCA cables from the LP5-2's output into the RCA input jacks of your aftermarket amplifier. Ensure left output connects to left input and right output to right input.
7. Mount the Unit: Securely mount the LP5-2 unit in a dry, accessible location, away from excessive heat or moving parts.
8. Reconnect Battery: Once all connections are made and verified, reconnect the vehicle's battery negative terminal.

Operating Instructions

The PAC LP5-2 features a single-dial gain adjustment to match the output level of the converter to the input sensitivity of your amplifier. This adjustment is crucial for achieving optimal sound quality and preventing distortion.

1. Initial Gain Setting: Start with the gain adjustment dial on the LP5-2 set to its minimum (fully counter-clockwise) position.
2. Amplifier Gain Setting: Set the gain control on your aftermarket amplifier to its minimum position as well.
3. Play Audio: Play a familiar piece of music through your vehicle's audio system at a moderate volume level (around 75% of maximum radio volume).
4. Adjust LP5-2 Gain: Slowly turn the gain adjustment dial on the LP5-2 clockwise using the provided screwdriver until you hear a slight distortion in the audio. Then, back off the gain slightly until the distortion disappears. This sets the optimal output level from the converter.
5. Adjust Amplifier Gain: Now, slowly increase the gain on your aftermarket amplifier until the desired volume and sound quality are achieved without distortion.
6. Fine-Tuning: Listen carefully for any distortion at higher volumes. If distortion occurs, slightly reduce the gain on either the LP5-2 or the amplifier until the sound is clear.

Note: Proper gain matching is essential for clear, powerful audio. Incorrect settings can lead to distorted sound or damage to your speakers and amplifier.

Maintenance

The PAC LP5-2 is designed for maintenance-free operation. To ensure its longevity:

• Keep the unit free from dust and debris.
• Ensure all wiring connections remain secure and free from corrosion.
• Avoid exposing the unit to extreme temperatures or moisture.

Troubleshooting

Specifications

• Model: LP5-2
• Channels: 2-Channel
• Input Type: Speaker Level
• Output Type: RCA Level
• Frequency Response: 20Hz - 20kHz (+/-1.5dB)
• Gain Adjustment: Single dial, precision matched stereo
• Dimensions: Approximately 4 x 8 x 1.25 inches (10.16 x 20.32 x 3.175 cm)
• Weight: Approximately 4 ounces (0.11 kg)
• UPC: 606523109437

Warranty and Support

For warranty information or technical support, please refer to the official PAC website or contact their customer service department. Keep your purchase receipt as proof of purchase for any warranty claims.

Note: Product specifications and features are subject to change without notice. Always refer to the latest information provided by the manufacturer.