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
INTRODUCTION
AS2 and AS2/S NEW FEATURES
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.
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.
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 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.
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.
APPLICATIONS
Here are three examples of how the AS2 and AS2/S can be used in different system configurations:
Switching Between Speaker-Level Sources (see Illustration 1)
As a Paging System “Break-In” Device (see Illustration 2)
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.
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.
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.
Illustration 2: As a Paging System “Break-In” Device
Illustration 1: Switching Between Speaker-Level Sources
iPort w/iPod
Family Room
Volume
M
ENU
Control
Whole-Home System
Preamp/Controller
Paging
Microphone
CD Changer
Music System
Paging System
Amplifier
Dining Room
Receiver/Amplifier
Volume
Control
Whole-Home System
Amplifier
From
Speaker
Outputs
From
Speaker
Outputs
Bedroom
TV or Monitor
+L– –R+
+L– –R+
From
+
–
CONTROL OUTPUT
12VDC 100mA
INPUT A
INPUT B
Speaker
Outputs
+L– –R+
+L– –R+
AUTO SWITCH,
SPEAKER LEVEL
AS2
+
–
CONTROL OUTPUT
12VDC 100mA
IN
INPUT A
INPUT B
+L– –R+
OUTPUT
12VDC
150mA
Volume
Control
TRIGGER A
B
TO
AUTO SWITCH,
SPEAKER LEVEL
AS2
OUT
SENSITIVITY DELAY
IN
AS2
+L– –R+
OUTPUT
12VDC
150mA
Selector
TRIGGER B TO A
SENSITIVITY DELAY
OUT
AS2
Selector
1
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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
Using the AS2 Control Output with Multiple Slave Units
OTHER SONANCE INDUSTRY UPGRADE COMPONENTS
The AS2’s Control Output can supply up to 200mA of current. This allows it
to be daisy-chained with up to two (2) AS2/S slave units (or up to five (5)
AL2/S slave units).
AVL1 Automatic Audio/Video Source Selector
The AVL1 provides automatic stereo line-level audio and composite video
switching between two audio/video sources (such as a VCR, cable TV tuner or
DVD player). Features and operation are otherwise identical to the AS2.
CONNECTING THE AS2/S (see Illustration 5)
Illustration 5: AS2/S Connections and Controls
AL2 and AL2/S Automatic Secondary Source Selector (Line-Level)
The AL2 and AL2/S function identically to the AS2 and AS2/S except that they
switch line-level audio signals instead of speaker-level audio signals. Typical
applications would be switching between two different inputs in a whole-
home audio system or home theater system, or combining two different audio
systems. Features and operation are identical to the AS2 and AS2/S, except that
the AL2 and AL2/S operate at line level.
Main
Input
Control
Input
Remote
Input
+L– –R+
+L– –R+
LS2 and LR2 Balanced Audio Sender and Receiver
+
–
CONTROL INPUT
12VDC 100mA
The LS2 and LR2 are the most efficient and highest-quality way to distribute
audio throughout a residential or commercial system. The LS2 converts
typical line-level audio signals to balanced configuration, allowing them to be
sent long distances and in close proximity to sources of noise interference
without inducing noise or high-frequency roll-off.
INPUT A
INPUT B
AS2 S
SLAVE,
SPEAKER LEVEL
+L– –R+
As a general rule of thumb, a balanced signal should be used for all but short
lengths of audio cable (under 20 feet) and wherever the possibility of signal
interference is likely. This includes where the audio signal passes near
dimmers, transformers, fluorescent and neon lights, or along the same
pathways as house current.
OUTPUT
Output
Active circuitry in the LS2 sends the balanced signal to the LR2, which
converts it back to an unbalanced line level signal that can be connected to the
audio component. The LS2 and LR2 must always be used with each other
unless the audio equipment has balanced inputs or outputs (such as profes-
sional sound or recording equipment). In this situation the LS2 could be used
as an unbalanced-to-balanced converter and the LR2 could be used as a
balanced-to-unbalanced converter. The LS2 can also be used with the 275 SE
and ASAP2 SAT amplifiers with an LR1 SAT module (part# 91815) installed.
The AS2/S is a‘slave’ unit that operates similar to the AS2, except that its input
switching is controlled by an external voltage source. In most systems the
control voltage will be supplied by the Control Output connector of an
AS2 unit, but any 12V DC source (with a minimum of 80mA of current) that
switches on and off can be used as a control trigger.
1. Connect the left & right speaker outputs of the main (default) 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 (see Step 1 of Connecting
The AS2).
VT1 Video Trigger
The VT1 provides a 12V DC signal when a video sync pulse is detected (pic-
ture or blue screen). This can be useful in triggering any component requir-
ing a 12V signal. An LED indicates when the unit is active. A detachable 12V
DC power supply is included.
Note: The AS2/S can be used with amplifiers up to 100 watts RMS/channel.
2. Connect the AS2/S’ left & right Outputs to the local zone speakers.
3. Connect the switching 12V source to the AS2/S’ Control Input connector.
• You can use any 2-conductor wire (16ga ~ 22ga) to connect the AS2/S
Control Input terminals to the Control Output terminals of an AS2.
RFGI1 Radio-Frequency Ground Loop Isolator
A passive device, the RFGI 1 is used to break a ground loop that can occur
when using a cable TV or antenna feed along with AC system grounding. The
RFGI1 blocks low frequency and DC by capacitor-coupling the shield and the
center conductor of any RF cable connected through it. This prevents the
occurrence of low-frequency humming and TV screen hum bars. The RFGI1
connects between the main cable TV feed and the cable distribution box, RF
amplifier, cable converter, VCR or TV. F-connections are used on each side for
a secure and reliable termination. Because it does not allow any RF leakage,
the RFGI1 is a superior termination compared to a 75-to-300-to-75 ohm bal-
anced connection.
Caution: Do not short the ‘+’ and ‘–’ terminals together on the AS2 or AS2/S
Control Outputs/Inputs.
SPECIFICATIONS
Power Consumption (AS2): 120mA 5% @ 12VDC
Power Consumption (AS2/S): 75mA 5% @ 12VDC
Dimensions (W x H x D):
4” x 2” x 3” (102mm x 51mm x 76mm)
OP3 Output Pad
Attenuates a stereo speaker-level signal to a stereo line-level signal. Can be
used to create an additional preamp signal from any amplifier or receiver
speaker terminals. Can also be used to add line-level output capability to a TV
with only external speaker leads. Use in conjunction with a 2-female to 1-male
Y-cord to sum left and right channels for monaural applications.
3
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modification to the mounting surface may be required. If mounting surface
modification is required, Sonance assumes no responsibility or liability for
such modification. All replaced parts and product become the property of
Sonance. Products replaced or repaired under this warranty will be returned
to the original retail purchaser, within a reasonable time, freight prepaid.
TECHNICAL ASSISTANCE AND SERVICE
If you any have questions about the operation or installation of this prod-
uct, please call our Technical Assistance Department on any business day
at (800) 582-0772 or (949) 492-7777; from 7 a.m. to 5 p.m., Pacific Time.
If your product should need repair or service, contact your Sonance
Authorized Dealer for help, or use the following procedure:
This Warranty does not include service or parts to repair damage caused by
accident, disaster, misuse, abuse, negligence, inadequate packing or ship-
ping procedures, commercial use, voltage inputs in excess of the rated max-
imum of the unit, or service, repair or modification of the product which
has not been authorized or approved by Sonance. This Warranty also
excludes normal cosmetic deterioration caused by environmental condi-
tions. This Warranty is in lieu of all other expressed warranties. If the prod-
uct is defective in materials or workmanship as warranted above, the pur-
chaser’s sole remedy shall be repair or replacement as provided above. In no
event will Sonance be liable for any incidental or consequential damages
arising out of the use or inability to use the product, even if Sonance or a
Authorized Sonance Dealer has been advised of the possibility of such dam-
ages, or for any claim by any other party.
1. Prior to calling Sonance, note the product’s model number, serial num-
ber, purchase date, and the name and address of the dealer where you
purchased the product.
2. Contact our Technical Assistance Department at the above
number(s) and describe the problem the unit is experiencing. If they
determine that the product requires service, they will transfer you to our
Customer Service Department, who will issue you
Authorization (RA) Number.
a
Return
IMPORTANT: YOU MUST HAVE PRIOR AUTHORIZATION TO
RETURN YOUR PRODUCT TO SONANCE!
Some states do not allow the exclusion or limitation of consequential
damages, so the above limitation and exclusion may not apply. All implied
warranties on the product are limited to the duration of this expressed
Warranty. Some states do not allow limitation on the length of an implied
warranty. If the original retail purchaser resides in such a state, this limitation
does not apply.
3. If you’re directed to return the unit to Sonance for repair, pack the unit in
its original shipping carton. If needed, you can obtain replacement pack-
aging from us for a small charge. Note: it is best if you place the box into
an additional outer “overcarton” before shipment to minimize a chance of
theft in shipment. Please include a copy of the original bill of sale inside
the package.
4. Contact a package delivery service such as United Parcel Service or
Federal Express to arrange prepaid (not collect) shipping. Do not use the
U.S. Postal Service.
EXCLUSIONS AND LIMITATIONS
The warranty set forth above is in lieu of all other warranties, express or
implied, of merchantability, fitness for a particular purpose, or otherwise.
The warranty is limited to Sonance products registered herein and
specifically excludes any damage to loudspeakers and other allied or
associated equipment which may result for any reason from use with this
product. Sonance shall, in no event, be liable for incidental or consequential
damages arising from any breach of this warranty or otherwise. This war-
ranty gives you specific legal rights, and you may have other rights which
vary from state to state.
IMPORTANT: FREIGHT COLLECT SHIPMENTS WILL BE REFUSED.
5. Write the RA Number on the outside of the shipping carton.
6. Ship the packaged unit to:
Quality Assurance Department
Sonance
212 Avenida Fabricante
San Clemente, CA 92672-7531
LIMITED WARRANTY COVERAGE (U.S. ONLY)
Sonance warrants to the original retail purchaser only that this Sonance
product will be free from defects in materials and workmanship for a
period of five (5) years, provided the product was purchased from a
Sonance Authorized Dealer.
Defective products must be shipped, together with proof of purchase, pre-
paid insured to the Authorized Sonance Dealer from whom they were pur-
chased, or to the Sonance factory at the address listed on this instruction
manual. Freight collect shipments will be refused. It is preferable to ship this
product in the original shipping container to lessen the chance of transit
damage. In any case, the risk or loss or damage in transit is to be borne by
the purchaser. If, upon examination at the factory or Authorized Sonance
Dealer, it is determined that the unit was defective in materials or
workmanship at any time during this warranty period, Sonance or the
Authorized Sonance Dealer will, at its option, repair or replace this product
at no additional charge, except as set forth below.
If this model is no longer available and can not be repaired effectively,
Sonance, at is sole option, may replace the unit with a current model of
equal or greater value. In some cases where a new model is substituted, a
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
©2007 Dana Innovations. All rights reserved.
Sonance, Sonamp and iPort are trademarks of Dana Innovations.
iPod is a registered trademark of Apple Computer, Inc. SnapTrack is a registered
trademark of Augat.
Sonance • 212 Avenida Fabricante • San Clemente, CA 92672-7531, USA
(800) 582-7777 or (949) 492-7777 • FAX: (949) 361-5151
Technical Support: (800) 582-0772
w w w . s o n a n c e . c o m
33-0261 06/07
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