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5
ACS 4.1 Installation and Operation Manual
INSTALLATION
Installation
Surge Protection
The ACS 4.1 has built-in resistance to voltage changes; we recommend that you use
a power surge protector or line conditioner on the incoming AC line. Lightning
strikes and/or other high voltage surges may damage your ACS 4.1 and connected
equipment if it is not properly protected. For lightning protection devices, check out
www.polyphaser.com and www.itwlinx.com.
UPS Standby Power System
We recommend that you connect your ACS 4.1 to a UPS system. A UPS helps min-
imize the risk to the ACS 4.1 and provides power during a power outage.
Installation/Operation
Input selection and Mute push buttons
Each push button represents an input to be routed to the switcher’s output. Each push
button has an associated LED indicator, which will illuminate when that particular
channel is selected. The Mute button is located to the right of the Input 4 button and
is recessed to prevent accidental/unauthorized muting.
Input channels may be configured for the audio switching modes:
Overlap (default):
Overlaps the selected (first) audio input with the audio from
the new audio input while the button for the new source is held down. Both chan-
nels will be fed to the output until the button for the new audio input is released,
at which time the first audio source will be switched off.
Interlock:
Connects one input the output, selecting an input disconnects all
other inputs from the output.
Mix:
Multiple inputs may be routed to the output – Push the input button once
to connect, to mute press again while holding down the mute button.
Audio Inputs
Each of the 4 stereo inputs are balanced bridging (20KΩ) at a nominal line level of
+4dBu. Multi-turn level controls are provided for each channel.
Audio Outputs
The ACS 4.1 provides one stereo output. The stereo output is adjustable and may be
configured as a mono-sum (dual-mono.)
