NuIth 2-Channel Car Audio Speaker Wire to RCA Line Output Converter (Model 6926585403699) Instruction Manual

1. Product Overview

The NuIth 2-Channel Car Audio Speaker Wire to RCA Line Output Converter is designed to integrate an aftermarket amplifier or subwoofer with a factory or aftermarket car stereo system that lacks dedicated RCA outputs. This device converts high-level speaker signals into low-level RCA signals, enabling seamless audio system expansion.

Image 1.1: NuIth 2-Channel Car Audio Speaker Wire to RCA Line Output Converter. This image shows the compact black converter unit with RCA outputs on one end and a multi-wire harness on the other, along with an output level adjustment knob and a power indicator light.

2. Key Features

Converts high-level speaker wire outputs to low-level RCA outputs.
Enables connection of 2-channel or mono amplifiers/subwoofers to existing car stereo systems.
Features an adjustable output level (0V, 1V, 2V) for fine-tuning bass response.
Includes a power indicator light for operational status.
Designed for easy installation without modifying existing wiring harnesses.
Automatic signal sensing for amplifier turn-on (REM control output).
Constructed with high-grade copper core for stable signal transmission.

3. Package Contents

The package typically includes:

NuIth 2-Channel Line Output Converter unit
Pre-attached wiring harness

4. Specifications

Attribute	Value
Product Dimensions (L x W x H)	3.9 x 2.3 x 0.7 inches
Item Weight	3.53 ounces
Model Number	6926585403699
Connector Type	RCA
Color	Black
Compatible Devices	Amplifier, Speaker

5. Installation Guide

Proper installation is crucial for optimal performance. It is recommended to consult a professional car audio installer if you are unfamiliar with car electrical systems.

5.1 Wiring Diagram Overview

The converter connects to your car stereo's speaker outputs and provides RCA outputs for your amplifier. It also requires power and ground connections, and a remote turn-on output for the amplifier.

Image 5.1: Wiring Color Code Table. This table details the function of each wire color on the converter's input harness, including Ground, 12V Power, REM Control Output, and speaker positive/negative for left and right channels.

Image 5.2: Detailed Wiring Diagram. This diagram illustrates the connections: the converter's wiring harness connects to the car's speaker wires, 12V power, ground, and remote turn-on. The RCA outputs connect to the amplifier's RCA inputs.

5.2 Connection Steps

Identify Speaker Wires: Locate the speaker wires from your car's stereo system. Refer to your vehicle's wiring diagram for correct identification of positive and negative terminals for the left and right channels.
Connect Speaker Inputs: Connect the converter's speaker input wires (White, White/Black, Gray, Gray/Black) to the corresponding speaker wires from your car stereo. Ensure correct polarity (positive to positive, negative to negative) to avoid phase issues.
Power and Ground Connections:
- Connect the Red wire to a switched 12V power source (e.g., accessory wire that turns on with the ignition).
- Connect the Black wire to a reliable chassis ground point.
Remote Turn-On: Connect the Blue wire (REM control output) from the converter to the remote turn-on input of your amplifier. The converter senses the audio signal and provides a turn-on signal to the amplifier.
RCA Output Connection: Plug your amplifier's RCA audio cables into the L (Left) and R (Right) RCA outputs on the converter.

Installation Example with Stereo and Converter

Image 5.3: Installation Example. This image shows the converter connected to a car stereo's wiring harness, illustrating how it integrates into the audio system.

Video 5.1: NuIth 2-Channel RCA Car Line Converter Adapter Overview. This video demonstrates the physical components of the converter and how the wiring harness connects to the main unit, providing a visual guide to the product's parts and initial assembly.

6. Operating Instructions

6.1 Output Level Adjustment

The converter features an adjustable output level knob on its top surface. This knob allows you to fine-tune the signal strength sent to your amplifier, optimizing the bass response without needing to adjust the amplifier directly.

Rotate the knob to select between 0V, 1V, or 2V output levels.
Start with a lower setting (e.g., 0V or 1V) and gradually increase if more signal is required by your amplifier.
Adjust the level to achieve a balanced sound and desired bass output without distortion.

Image 6.1: RCA Outputs and Output Level Adjustment. This image highlights the RCA output jacks (L and R) and the rotary knob for adjusting the output level (0V, 1V, 2V) on the converter unit.

6.2 Power Indicator

A power indicator light is present on the converter. This light illuminates when the unit is receiving power and operating correctly, providing a visual confirmation of its status.

7. Maintenance

The NuIth Line Output Converter requires minimal maintenance. To ensure longevity and optimal performance:

Keep the unit dry and free from dust and debris.
Periodically check all wiring connections to ensure they are secure and free from corrosion.
Avoid exposing the unit to extreme temperatures or direct sunlight for extended periods.

8. Troubleshooting

Problem	Possible Cause	Solution
No sound from amplifier/subwoofer	Incorrect wiring (power, ground, speaker inputs, RCA outputs) Converter not receiving power (power indicator off) Amplifier not turning on (REM signal issue) Incorrect output level setting	Verify all wiring connections according to the diagram (Section 5.1). Pay close attention to speaker wire polarity. Check 12V power and ground connections. Ensure the 12V source is switched with the ignition. Confirm the blue REM wire is connected correctly to the amplifier's remote input. Adjust the output level knob on the converter.
Distorted or poor sound quality	Incorrect speaker wire polarity Output level set too high Ground loop interference	Double-check speaker wire polarity for both channels. Incorrect polarity can cause phase cancellation and poor bass. Reduce the output level on the converter. Ensure all ground connections are clean and secure. Consider a ground loop isolator if the issue persists.
Converter power indicator off	No 12V power to the red wire Poor ground connection	Check the 12V power source and connection to the red wire. Inspect the black ground wire connection for security and proper contact.

9. Warranty and Support

For warranty information and technical support, please refer to the product packaging or contact NuIth customer service directly. Keep your purchase receipt as proof of purchase.

For additional resources and product information, visit the official NuIth store: NuIth Auto Accessories Store.

NuIth 6926585403699