AudioControl LC6 - User Manual

tmLC6tm
Six Channel Line Output Converter
For interfacing with factory installed audio systems
G
reetings from the rainforests of the Pacific Northwest. We would
like to congratulate you on your purchase of the LC6; a six-
channel, high-performance, line-output converter. This unique
product will accept two, four, or six channels of speaker-level signal from
a factory-installed amplifier or source unit and convert it to a high-quality,
low-noise pre-amp signal. Therefore the LC6 will allow you to use your
factory installed source unit but give you the ability to add a really good
aftermarket amplifier and processor. Whether this is your first product
from the rainforest dwellers of AudioControl or you are already a firm
believer, you will definitely enjoy how great the LC6 can make your
performance system sound.
Now before you start salivating just thinking about the benefits of your
LC6, take a few minutes to sit back, have a cold beverage, and read
through this manual. It contains lots of useful facts and information - -
and besides, we spent a lot of time writing it!
Key Features of The LC6
Here are some of the cool features that your LC6 offers:
• Six input and output channels
• Speaker-level inputs
• AutoMode
tm
inputs
• Signal sensing inputs
• Level matching controls
• 12 volt trigger output
• Input for optional subwoofer level control
• Positron nuclear technology (not really, but it made you look!)
TM
making good sound better
TM
22410 70th Avenue West • Mountlake Terrace, WA 98043
Phone 425-775-8461 • Fax 425-778-3166 • www.audiocontrol.com
®

Summary

Product Features

Speaker-Level Inputs

Accepts amplified signals from factory units and outputs a pre-amp signal via RCA.

Signal-Sensing Inputs

Automatically powers up the LC6 when a speaker-level signal is detected.

12-Volt Trigger Output

Provides a 12-volt output to trigger external devices like amplifiers.

AutoMode Inputs

Automatically routes rear channels to subwoofer when no subwoofer signal is present.

Level Matching Controls

Adjusts signal level from the factory unit to match aftermarket amplifiers.

Optional Subwoofer Level Control

Allows dash-mounted control for subwoofer output level.

Bulletproof Warranty

Installation Guide

Quick Installation Steps

Provides a concise overview for speeding up the installation process.

Placement & Mounting

Guidance on selecting a suitable location and securely mounting the LC6 unit.

Power Wiring

Instructions for connecting the +12V, Ground, and Remote In/Out wires.

Audio Wiring

Details on connecting speaker-level inputs and pre-amp outputs for audio signal flow.

A Guided Tour of LC6

Under the Covers Settings

Details on internal settings like Signal Sense and Ground Isolation.

Level Matching Procedure

Dash Control Installation

Mounting Options

Covers dash bracket and custom flush mounting for the dash control.

Dual-Color Dash Control LED

Information on the LED color and dimming capabilities.

Troubleshooting Common Issues

No Power

Checks for power and remote turn-on connections when the unit has no power.

Intermittent Power Off

Addresses issues with the LC6 turning off intermittently due to signal sensing.

Sound Distortion

Guidance on resolving distorted sound or excessive speaker movement.

System Hiss

Tips for eliminating unwanted hiss from the audio system.

Low Output

Solutions for low signal output from the LC6.

Maximized LED Issues

Troubleshooting why the Maximized LED may not be lighting up.

Related Products

The Warranty

LC6 Specifications

Overview

1. Function Description
2. Usage Features
3. Maintenance Features

The AudioControl LC6 is a six-channel, high-performance line output converter designed to integrate aftermarket amplifiers and processors with factory-installed audio systems. It takes speaker-level signals from a factory amplifier or source unit and converts them into high-quality, low-noise pre-amp signals, allowing users to upgrade their car audio system while retaining the factory head unit.

Function Description

The primary function of the LC6 is to bridge the gap between factory audio systems, which typically output amplified speaker-level signals, and aftermarket components that require low-level RCA pre-amp signals. This conversion is crucial for achieving optimal sound quality and system flexibility when upgrading. The device supports two, four, or six channels of input, providing versatility for various factory system configurations.

A key feature is its high-impedance speaker-level inputs, which enable it to accept amplified signals from most factory-installed source units, including those from premium brands like Bose. This ensures compatibility with a wide range of vehicles without introducing impedance matching issues that can degrade sound quality. The LC6 outputs a high-quality pre-amp signal via standard RCA connectors, ready for connection to aftermarket amplifiers, crossovers, or signal processors.

The LC6 also incorporates "AutoMode Inputs," which enhance its flexibility. If only front and rear speaker-level inputs are provided (i.e., no dedicated subwoofer input from the factory), the AutoMode circuitry automatically routes the rear-channel signal to the subwoofer output channels. This allows the LC6 to accept two input channels and provide four output channels, or accept four input channels and provide six output channels, effectively creating a subwoofer output even if the factory system doesn't have one.

For system control, the LC6 includes "Level Matching Controls" for each pair of channels. These controls allow users to adjust the signal level from their factory source unit or amplifier to precisely match the input requirements of their aftermarket amplifier or processor. This is critical for preventing clipping, minimizing noise (hiss), and achieving a balanced sound across the entire audio system.

Usage Features

The LC6 offers several features designed to simplify installation and enhance user experience:

• Signal-Sensing Inputs: This intelligent feature allows the LC6 to power up automatically when it detects a speaker-level signal at its inputs. This eliminates the need for a separate remote turn-on wire from the factory head unit, which is often absent in OEM systems. The device also includes a short turn-off delay to prevent it from cycling off during brief quiet passages in music or when changing CDs.
• 12-Volt Trigger Output (Remote Out): When the LC6 powers up (either via signal sensing or a traditional remote input), it outputs a 12-volt signal. This "Remote Out" can be used to trigger external aftermarket devices such as amplifiers and signal processors, ensuring they turn on and off in sync with the rest of the audio system. It's important to note that this output is for triggering purposes only and should not be used to power devices directly.
• Optional 12-Volt Trigger Input (Remote In): For those who prefer a traditional turn-on method or if the signal-sensing feature isn't ideal for their specific factory system, the LC6 can also be turned on with a standard 12-volt trigger signal from the source unit.
• Maximized Indicator LED: This brightly colored LED provides visual feedback on the signal level. It flickers when the signal level is just below clipping, helping installers and users properly set the level matching controls to achieve maximum output without distortion. When correctly configured, this LED should only flicker occasionally at the system's maximum desired volume.
• Power LED: A red LED indicates when the LC6 is powered on, confirming correct electrical connections.
• Input for Optional Subwoofer Level Control: The LC6 supports an optional, separately sold dash-mounted remote control. This allows the user to conveniently adjust the level of the subwoofer output directly from the dashboard, providing real-time control over bass intensity. The subwoofer output is full-range, so it may require an external crossover for optimal performance.

Maintenance Features

While the LC6 is designed for reliability, it includes features and recommendations for optimal long-term performance and troubleshooting:

• Signal Sense Settings (Internal Jumper): Under the cover, an internal jumper allows users to adjust the sensitivity of the signal-sensing inputs. The factory default "NORMAL" setting works for most systems, but if a factory system outputs an abnormally low signal, the jumper can be changed to a "LOW" setting to ensure reliable turn-on.
• Ground Isolation Selector (Internal Jumpers): To address potential alternator noise or ground loop issues, the LC6 provides alternative grounding connections via internal jumpers. Users can select between "Isolated," "200ohm," or "Ground" settings. It is crucial to turn off the system before adjusting these jumpers.
• Bulletproof Warranty: AudioControl emphasizes the durability and reliability of the LC6 with a comprehensive warranty. If installed by an authorized AudioControl dealer in the United States, the device comes with a limited five-year parts and labor warranty. For self-installations, a one-year parts and labor warranty is provided. To activate the warranty, users must fill out and send in the warranty card within 15 days of purchase and retain their sales receipt as proof of purchase and installation.
• Troubleshooting Guide: The manual includes a dedicated troubleshooting section to help users diagnose common issues such as no power, intermittent turn-off, distorted sound, system hiss, low output, or the Maximized LED not lighting up. This guide offers practical advice, such as checking power connections, adjusting amplifier gains, and verifying signal levels, to resolve problems efficiently.

The LC6 is a robust and flexible solution for integrating aftermarket audio components into vehicles with factory systems, offering a blend of performance, ease of use, and thoughtful design.

AudioControl LC6 Specifications

General

Channels	6
Power Supply	12 VDC
Input Impedance	20 kΩ
Weight	1.5 lbs
Outputs	6 RCA
Output Gain	0dB to 12dB adjustable
Dimensions	8.0"W x 4.75"D x 1.2"H (20.3cm W x 12cm D x 3cm H)