Audio Control LC1i Quick Start page 3

Ground Isolation Switch
This handy switch allows the user to change
how the LC1i is grounded. Sometimes when
installing car audio equipment, "ground
buzz" or "alternator whine" will creep into the
audio path, wreaking havoc on your listening
experience. There are 3 positions. GND, ISO, and 200 ohms. The
unit ships from the factory in the ISO position.
GND - Power ground and audio ground are tied together.
ISO - Power ground and audio ground are separate.
200Ω - There is 200 ohms of resistance between power ground
and audio ground.
Load Selection Switch
The LC1i is designed to present NO load to the
output of the factory amp, which can make some
factory amps upset and stop passing audio. The
Load Selection feature tricks the factory amp in
to detecting a speaker load so it will continue to
pass audio. Set the Load Selection Switch set to 20 kΩ if you are
using the Line Level Inputs.
20 Ω - Best suited for late model Dodge/Chrysler/Jeep/Ram/Fiat
vehicles equipped with OEM base sound system. (no separate
factory amplifier)
60 Ω - Best suited for late model Dodge/Chrysler/Jeep/Ram/Fiat
vehicles equipped with a separately amplified OEM "premium"
sound system.
20 kΩ - Best suited for all other applications. Required setting for
Line Level Inputs.
Line Level Inputs
To use the LC1i as a line driver, connect the Line Level inputs
to the outputs of your after market source and set the Load
Selection Switch to 20 kΩ. Signal from the Speaker Level and Line
Level inputs will be mixed when used concurrently.
Setting Levels
Use the Output Level knob to adjust the output
level. We would say more here, but it doesn't get
much simpler than that.
Maximized Light
The Maximized Light can be used to help
achieve optimal output level and will let you
know if you are getting close to clipping the
output of the LC1i.
With the factory system set to its maximum
undistorted volume, match the output level of the LC1i to
the input maximum of your after market amplifier. If the
Maximized Light turns on, the LC1i output is distorting. Turn
the output level down until the Maximized Light turns off. IF
THE MAXIMIZED LIGHT NEVER TURNS ON, don't panic. This just
means the output of the LC1i is not clipping/distorting.
Remote Output
Use the Remote Output (Rmt Out) to trigger on your
aftermarket amplifier. When the LC1i turns on (regardless of
method) the Remote Output will always be active. Do not
connect more than two amplifiers to the LC1i Remote Output.
Connecting more than two amplifiers may damage the LC1i.