FSR IT-AS411 Series - Manual (Page 3)

14
DIMENSIONS
All models have the same front panel appearance.
The depth on all models is 6”. Allow clearance for connectors and
cables.
3
INTRODUCTION
The IT-AS411 Series Audio Switchers are 4x1 audio switchers that
have an extra line/mic level input for a voice lift system or direct
microphone input. All models have four switched line level inputs
and an independent mic or line level input that is summed (mixed)
with the selected active program audio. Automatic gain control
and noise gating are incorporated to ensure consistent voice and
program audio levels with a minimum of unwanted ambient noise.
All models have balanced or unbalanced input and output
capability. DIP switches are provided to set the voice input level to
mic or line, adjust microphone sensitivity, set phantom power and
select mono or stereo operation. They also have adjustable volume
control buttons and mute for both the program and voice inputs.
Switching, muting and gain can be executed locally by front panel
push buttons, muting by external dry contact closure and additional
commands via RS-232 serial control. On board LED’s monitor;
input select, volume levels and muting status.
All models have line level inputs and outputs. They can be
controlled by the front panel and via pass through RS-232 control.
The IT-AS411-A25M70 features a 25Wrms mono internal amplifi er
to drive either a 4 to 8 ohm speaker or a 70V line output.
The IT-AS411-A25S8 features a 25Wrms stereo output to drive a 4
to 8 ohm speaker.