Audio Control LC7i - User Manual

Six Channel Line Output Converter with AccuBASS™ for
interfacing with factory installed audio systems
The LC7i transforms your under-performing factory audio sys-
tem into a supreme audio machine! It is a compact, six-channel,
high-performance active line output converter with AudioControl’s
patent-pending AccuBASS™ compensation that corrects the bass
roll-off present in many factory equipped audio systems. The LC7i
accepts up to six channels of speaker-level signal from factory-
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quality, after market low-noise, pre-amp level signal that can be
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ACR-1, remote level control, so you can adjust the output of the
bass channels from the convenience of the driver’s seat. With the
LC7i you have a high performance audio system while maintaining
the features, functions and
aesthetics of your factory
source unit!
This manual covers the
features, functions, instal-
lation and usage of the
LC7i so please take a few
moments to read through
it. If it’s easier, read 140
characters at a time, just
make sure to remember
where you stopped reading last time! We’ve
tried to cover all possible situations and have included lots of facts
and useful information. For more information visit our web site at
http://www.audiocontrol.com
Making Good Sound Great
®
page 1

Summary

Under the Hood - Internal Jumpers

Output Summing Jumpers

Combine separate signals into a single full-range signal for new systems.

GTO Turn-On Circuit

A Guided Tour of LC7 i

AccuBASS Controls

Threshold and level controls determine when AccuBASS™ activates and bass correction level.

Ground Connection

+12 V Power Connection

AccuBASS Processing

AccuBASS Operation

Restores bass frequencies lost at high volumes in factory systems for smooth response.

Setting the AccuBASS

Step-by-step guide for one-time setting of AccuBASS™ level and threshold.

Basic Factory Upgrade System

Upgrade for Factory System with Remote Mounted Factory Amplifier

Block Diagram of the LC7 i

Signal Flow Overview

Simplified block diagram showing signal paths through the LC7i for troubleshooting.

The WARRANTY

Warranty Conditions

Details the conditional requirements for the LC7i warranty to be valid.

Warranty Exclusions

Outlines conditions that void the warranty, such as improper use or physical damage.

LC7 I SPECIFICATIONS

Technical Specifications

Lists key technical data including input/output levels, frequency response, and dimensions.

Audio Control LC7i Specifications

General

Channels	7
Power Supply	12 VDC
Weight	1.5 lbs
Total Harmonic Distortion	0.01%
Signal to Noise Ratio	100dB
Input Impedance	10kΩ