FSR IT-AS411 User Manual

IT-AS411 SERIES

AUDIO SWITCHER / AMPLIFIERS

(COVERS MODELS IT-AS411, IT-AS411-25M70 AND IT-AS411-25S8)

INSTALLATION AND OPERATING GUIDE

(MODEL IT-AS411-25S8 pictured)

16

43961

LIT1354

PROPRIETARY INFORMATION

All information in this manual is proprietary to and the
property of FSR inc. This publication is protected by the Federal
Copyright Law, with all rights reserved. No part of this document
may be reproduced, transcribed, or transmitted, in any form or
by any means, without prior explicit written permission from FSR
Inc.

Operators Safety Summary

The general safety information in this summary is for operating
personnel.

REGULATORY COMPLIANCE

The Power Adapter has been tested for compliance with: UL, CSA and CE.

WA R R A N T Y P OL IC Y

This product is warranted against failures due to defective parts or faulty workmanship for a period
of three years after delivery to the original owner. During this period, FSR will make any necessary
repairs or replace the unit without charge for par ts or labor. Shipping charges to the factory or repair
station must be prepaid by the owner, return-shipping charges, via UPS / FedEx ground, will be
paid by FSR.

This warranty applies only to the original owner and is not transferable. In addition, it does not apply
to repairs done by other than the FSR factory or Authorized Repair Stations.

This warranty shall be cancelable by FSR at its sole discretion if the unit has been
subjected to physical abuse or has been modi fi ed in any way without wr itten authorization from FSR.
FSR’s liabilit y under this warranty is limited to repair or replacement of the defective unit.

Read Instructions Read and understand all safety and operating
instructions before using this equipment. Keep the instructions
handy.

Do Not Remove Covers or Panels There are no user-serviceable
parts within the unit. Removal of the top cover will expose
dangerous voltages. To avoid personal injury, do not remove the
top cover. Do not operate the unit without the cover installed.

Power Source This product is intended to operate from the
specifi ed wall plug-in transformer. Do not use any other power
source.

Use the Proper Power Cord Use only the power cord and
connector specifi ed for your product. Use only a power cord that is
in good condition. Refer cord and connector changes to qualifi ed
service personnel.

Do Not Operate in Explosive Atmospheres To avoid explosion,
do not operate this product in an explosive atmosphere.

FSR will not be responsible for incident al or consequential damages resulting from the use or misuse
of its products. Some states do not allow the exclusion of incidental or consequential damages, so the
above limitations may not apply to you. This warranty gives you specifi c legal rights, and you may
also have other rights which vary from state to state.

Warrant y claims should be accompanied by a copy of the original purchase invoice
showing the purcha se date (if a Warrant y Registration Card was mailed in at the time of pu rchase, this
is not necessary). Before returning any equipment for repair, please read the impor tant information
on service below.

SERVICE

Before returning any equipment for repair, please be sure that it is adequately packed and cushioned
against damage in shipment, and that it is insured. We suggest that you save the original packaging
and use it to ship the product for ser vicing. Also, please enclose a note giving your name, address,
phone number and a description of the problem.

NOTE: All equipment being returned for repair must have a Return Authorization ( RMA)
Number. To get a RMA Number, please call:

FSR Service Department (973-785-4347).

Please display your RMA Number prominently on the front of all packages.

Contact Information:

FSR Inc.

244 Bergen Boulevard,

Woodland Park, NJ 07424

Tel: [phone] · Fax: [phone]

E-Mail: [e-mail] · Web: http://www.fsrinc.com

2

15

DIMENSIONS

All models have the same front panel appearance.
The depth on all models is 6”. Allow clearance for connectors and
cables.

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.

14

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.

3