Sonance AS2S a n d a S 2 / S I N D U S T R Y U P G R a D E, Connecting the AS2 see Illustration

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

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				Surround Sound			Left	Right
Amplifier				Receiver			Speaker	Speaker
							TV/Monitor	Center
Speaker A	Speaker B			Front	Surround		Center	Speaker
Outputs	Outputs			Speaker	Speaker		Speaker
				Outputs	Outputs		Output	Powered
								Subwoofer
+L– –R+		+L– –R+		+L– –R+		+L– –R+
	+ –				+ –
INPUT A	CONTROL OUTPUT	INPUT B		INPUT A	CONTROL INPUT	INPUT B
	12VDC 100mA				12VDC 100mA		Left	Right
		AS2				AS2 S
	AUTO SWITCH,						Surround	Surround
	SPEAKER LEVEL				SLAVE,
					SPEAKER LEVEL		Speaker	Speaker
IN	+L– –R+				+L– –R+
12VDC
150mA
OUT		TRIGGER	B TO A
		SENSITIVITY	DELAY
AS2	OUTPUT				OUTPUT		AS2/S
Selector			From Control Output				Selector
				To Control Input

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.

Illustration 4: AS2 Connections and Controls

	Main	Control	Remote
	Input	Output	Input
	+L– –R+		+L– –R+
Input A				Input B
Active		+ –		Active
Indicator	INPUT A	CONTROL OUTPUT	INPUT B	Indicator
		12VDC 100mA

	AUTO SWITCH,	AS2
	SPEAKER LEVEL		Switching
			Delay Time
IN	+L– –R+		Adjustment
12VDC
150mA
OUT		TRIGGER	B TO A
		SENSITIVITY	DELAY
	OUTPUT
Power	Output		Trigger
Supply			Sensitivity
Connections			Adjustment

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-switchedAC 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.

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