Sonance AS2, AS2S User Manual

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 pow­ered 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.

INSTRUCTION MANUAL

AS2 and AS2/S INDUSTRY UPGRADE
AUTOMATIC SECONDARY SPEAKER SOURCE 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 whole­home 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 auto­matically 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.

CONNECTING THE AS2 (see

Illustration 4

)

IMPORTANT: Make sure all source components and power amplifiers are
turned OFF before making any connections.

Do not plug the AS2 power supply into a wall outlet until all connections
have been made.

1. Determine which amplifier will be the main (default) amplifier and which is
the remote (sensing/switching) amplifier. In most cases the Main amplifier
will have program that is continuous or active most of the time, such as a
whole-home audio system amplifier. The Remote amplifier will have
program material the user will be watching or listening to for a relatively short
time, such as a paging system amplifier or a local TV set’s speaker outputs.

2. Connect the left & right speaker outputs of the main amplifier to the AS2’s
Input A terminals; connect the left & right speaker outputs of the remote
amplifier to the AS2’s Input B terminals.

Note: The AS2 can be used with amplifiers up to 100 watts RMS/channel.

3. Connect the AS2’s left & right Outputs to the local zone speakers.

4. Connect the included PS-1 power supply to the AS2’s 12V DC jack and plug
it into a non-switched AC outlet that supplies continuous current.

• If you’re using more than one Sonance Industry Upgrade component you
can power it from the AS2’s power supply by connecting a cable with
standard 2.1mm internal diameter connectors between the AS2’s Loop
jack and the other component’s 12V DC jack.

5. The amount of time it takes for the AS2 to revert back to Input A after the
signal to Input B has stopped is user-adjustable by the B To A Delay Adjust
control. Turning the control clockwise increases the delay time.

• The minimum delay time is 3 seconds; the maximum is 3 minutes.

6. The amount of Input B voltage required to switch the AS2 from Input A to
Input B is user-adjustable by the Trigger Sensitivity control. Turning the
control clockwise increases the trigger sensitivity (requires less voltage to
trigger the inputs to change).

• The minimum voltage required for triggering is 5mV; the maximum is 4.5V.

INSTRUCTION MANUAL

AS2 and AS2/S INDUSTRY UPGRADE
AUTOMATIC SECONDARY SPEAKER SOURCE SELECTOR

+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

+ –

Output

Input A

Active

Indicator

Power

Supply

Connections

Input B
Active
Indicator

Trigger

Sensitivity

Adjustment

Switching
Delay Time
Adjustment

Remote

Input

Main
Input

Control

Output

Illustration 4: AS2 Connections and Controls

2

In a Home Theater (see

Illustration 3

)

The AS2 and AS2/S can be used to switch speakers in a home theater system between background music reproduction and dedicated home theater duties.In the
example below, an AS2 is used to switch the front left & right speakers from background music to home theater application, while an AS2/S slave unit switches
the surround speakers from background music to home theater surround channel application. The background music amplifier is the main input (Input A),
while the surround sound receiver is the remote input (Input B) — when it outputs a signal the AS2 and AS2/S send its signal to the speakers.

+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

+ –

CONTROL INPUT
12VDC 100mA

SLAVE,

SPEAKER LEVEL

+L– –R+

INPUT A INPUT B

OUTPUT

+L– –R+ +L– –R+

AS2/S

+ –

Front
Speaker
Outputs

Speaker B

Outputs

Speaker A

Outputs

Surround

Speaker
Outputs

Center
Speaker
Output

Left

Speaker

Left

Surround

Speaker

Powered

Subwoofer

Right
Surround
Speaker

Center
Speaker

Right
Speaker

TV/Monitor

Surround Sound
Receiver

Background Music
Amplifier

AS2
Selector

AS2/S

Selector

From Control Output

To Control Input

Illustration 3: Switching Speakers in a Home Theater System