Sonance Automatic Speaker Level Source Selector AS2 Instruction Manual page 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.
Illustration 3: Switching Speakers in a Home Theater System
Background Music
Amplifier
Speaker A Speaker B
Outputs Outputs
+L– –R+ +L– –R+
+ –
CONTROL OUTPUT
INPUT A
12VDC 100mA
AUTO SWITCH,
SPEAKER LEVEL
IN
+L– –R+
12VDC
150mA
OUT
OUTPUT
AS2
Selector
CONNECTING THE AS2
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.
Illustration 4: AS2 Connections and Controls
Main
Input
+L– –R+
Input A
Active
Indicator
INPUT A
SPEAKER LEVEL
IN
12VDC
150mA
OUT
Power
Supply
Connections
Surround Sound
Receiver
Front Surround
Speaker Speaker
Outputs Outputs
+L– –R+
+ –
INPUT B INPUT A CONTROL INPUT
12VDC 100mA
AS2
SLAVE,
SPEAKER LEVEL
+L– –R+
TRIGGER B TO A
SENSITIVITY DELAY
OUTPUT
From Control Output
To Control Input
(see Illustration 4 )
Control Remote
Output
Input
+L– –R+
+ –
CONTROL OUTPUT
INPUT B
12VDC 100mA
AS2
AUTO SWITCH,
+L– –R+
TRIGGER B TO A
SENSITIVITY DELAY
OUTPUT
Trigger
Output
Sensitivity
Adjustment
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 SPEAKER SOURCE SELECTOR
Left
Speaker
Center
Speaker
Output
+L– –R+
INPUT B
Left
AS2 S
Surround
Speaker
AS2/S
Selector
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.
Input B
• If you're using more than one Sonance Industry Upgrade component you
Active
can power it from the AS2's power supply by connecting a cable with
Indicator
standard 2.1mm internal diameter connectors between the AS2's Loop
jack and the other component's 12V DC jack.
Switching
5. The amount of time it takes for the AS2 to revert back to Input A after the
Delay Time
Adjustment
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.
2
TV/Monitor
Center
Speaker
Powered
Subwoofer
Right
Speaker
Right
Surround
Speaker