INTRODUCTION
Thank you for purchasing the AS2 — AS2/S Automatic Speaker Source
Selector. The AS2 and AS2/S automatically switch a single pair of speakers
between two speaker-level stereo sources: a main source connected to the
Input
A
terminals and a remote source connected to the
Input B
terminals.
When the AS2 senses a remote source signal present at the
Input B
terminals,
that source signal is automatically switched-through to the output terminals.
When the remote source signal is no longer present on
Input B
, after a short
(installer-adjustable) time delay the AS2 and AS2/S automatically switch the
outputs to the main source connected to the
Input A
terminals.
The time it takes the AS2 and AS2/S to switch back to Input A from Input B
can be adjusted to suit the different types of audio sources being used, or the
preferences of the listeners. The sensitivity of the detection/switching circuitry
is also adjustable to work with a variety of audio source equipment.
AS2 and AS2/S NEW FEATURES
The AS2 and AS2/S incorporate several new features that improve their
performance and installability:
• The AS2 operates on a single-output 12V DC power supply, and can also be pow-
ered directly by 12V sources in cars, boats or RV installations. The AS2 power inputs
have reverse polarity protection.
• The AS2 features
DC In and DC Out connections that allow multiple Industry
Upgrade units to share a single power supply.
• The AS2 and AS2/S
Input, Output and Control connectors are removable quick-
toggle RIA connectors.
• The AS2 and AS2/S chassis have recessed mounting holes that allow them to
easily be wall-mounted using two screws.
• The AS2 and AS2/S chassis’ are compatible with 3” TK-series SnapTrack
®
from
Augat.
I N S T R U C T I O N M A N U A L
A S 2 a n d A S 2 / S I N D U S T R Y U P G R A D E
AUTOMATIC SECONDARY SPEAKERSOURCE SELECTOR
Volume
Control
Volume
Control
Volume
Control
+L– –R+
CONTROL OUTPUT
12VDC 100mA
INPUT A
INPUT B
OUTPUT
AUTO SWITCH,
SPEAKER LEVEL
+L– –R+
+L– –R+
IN
OUT
12VDC
150mA
TRIGGER
SENSITIVITY
B TO A
DELAY
AS2
+ –
TV or Monitor
Whole-Home System
Preamp/Controller
Family Room
Dining Room
Bedroom
Whole-Home System
Amplifier
AS2
Selector
From
Speaker
Outputs
APPLICATIONS
Here are three examples of how the AS2 and AS2/S can be used in different system configurations:
Illustration 1: Switching Between Speaker-Level Sources
+L– –R+
CONTROL OUTPUT
12VDC 100mA
INPUT A
INPUT B
OUTPUT
AUTO SWITCH,
SPEAKER LEVEL
+L– –R+
+L– –R+
IN
OUT
12VDC
150mA
TRIGGER
SENSITIVITY
B TO A
DELAY
AS2
+ –
MENU
Music System
Receiver/Amplifier
Paging System
Amplifier
AS2
Selector
From
Speaker
Outputs
From
Speaker
Outputs
CD Changer
Paging
Microphone
iPort w/iPod
1
Illustration 2: As a Paging System “Break-In” Device
Switching Between Speaker-Level Sources
(see
Illustration 1)
The AS2 can automatically switch two speaker-level sources, such as a whole-
home audio system and a local TV set, to a single pair of speakers.
With the whole-home system amplifier connected to the AS2’s
Input A
and the
local zone TV’s speaker outputs connected to the AS2’s
Input B
, the whole-
home system would be the speakers’ main source and would remain auto-
matically selected by the AS2 whenever the TV was turned OFF. When the TV
is ON it sends an audio signal to the AS2, which would then automatically
select the TV as the active source and send its signal to the speakers.
As a Paging System “Break-In” Device
(see
Illustration 2)
The AS2 can serve as a “Break-In” device for paging applications. The
continuous music source would be connected to the AS2’s
Input A,
the
paging system amplifier would connect to the AS2’S
Input B,
and the AS2’s
Outputs
would connect to the local speakers. When the paging amplifier is
activated the AS2 would switch to
Input B
to reproduce the page; after the page
had ended it would revert back to the music signal connected to
Input A
.
