Sonance Industry Upgrade Automatic Secondary Source Selector AL2 Instruction Manual

INTRODUCTION
Thank you for purchasing the AL2 — AL2/S Automatic Source Selector. The
AL2 and AL2/S automatically switch between two line-level stereo sources: a
main source connected to the Input A jacks and a remote source connected to
the Input B jacks.
When the AL2 senses a remote source signal present at the Input B jacks, that
source signal is automatically switched-through to the output jacks. When the
remote source signal is no longer present on Input B, after a short (installer-
adjustable) time delay the AL2 and AL2/S automatically switch the
outputs to the main source connected to the Input A jacks.
The time it takes the AL2 and AL2/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 AL2 and AL2/S can be used in different
system configurations:
Basic Music System
(see Illustration 1 )
A basic music system consisting of two music sources (such as an iPort™
docking station and a CD changer), an AL2, a Sonance Sonamp® 275 SE
amplifier and speakers with in-wall volume controls would offer automatic
selection of the source and automatic turn-on of the Sonamp (using its Auto-
On feature).
With the CD changer connected to the AL2's Input A and the iPort connected
to it's Input B, the CD changer would be the system's main source and would
remain automatically selected by the AL2 whenever the iPod® was paused, or
was not docked in the iPort. When the iPort/iPod sends an audio signal to the
AL2 it would automatically be selected and its signal sent to the amplifier.
A system like this does not require a preamp or other source selecting device.
Illustration 1: Basic Music System
iPort iPort
Wallplate
with
iPod
MENU
CAT-5
Cable
CD Changer
L R L R
+ –
INPUT A INPUT B
CONTROL OUTPUT
12VDC 100mA
AL2
L R
IN
12VDC
OUTPUT
150mA
TRIGGER B TO A
OUT
SENSITIVITY DELAY
AUTO SWITCH, LINE LEVEL
AL2
Selector
Zone 1
Speakers
Zone 2
Speakers
Zone 3
Speakers
275 SE
Amplifier
I N S T R U C T I O N M A N U A L
A L 2 a n d A L 2 / S I N D U S T R Y U P G R A D E
AUTOMATIC SECONDARY SOURCE SELECTOR
AL2 and AL2/S NEW FEATURES
The AL2 and AL2/S incorporate several new features that improve their
performance and installability:
• The AL2 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 AL2 power inputs have
reverse polarity protection.
• The AL2 features DC In and DC Out connections that allow multiple Industry Upgrade
units to share a single power supply.
• The AL2 Control Out and AL2/S Control In connectors are removable quick-toggle
RIA connectors.
• The AL2 and AL2/S chassis have recessed mounting holes that allow them to
easily be wall-mounted using two screws.
• The AL2 and AL2/S chassis' are compatible with 3" TK-series SnapTrack
When the iPod is paused or not docked and the CD changer is not playing, the
Sonamp will revert to its Standby mode and no sound will be heard. When the
system is playing, volume is controlled by the in-wall volume controls.
Combining Two Separate Systems
Two separate systems in a home (such as the preamp/controller for a whole-
home audio system and a master bedroom system with a small receiver) could
be connected to the AL2's A and B inputs.
Connecting the AL2's outputs to the Bus inputs of a multi-zone amplifier like
the Sonamp 875 SE creates an elegant selector for the two systems.
With the whole-home system preamp connected to the AL2's Input A and the
bedroom system's Tape Monitor output connected to the AL2's Input B, the
bedroom system is now the remote source. Whenever it presents a signal to
the AL2 the whole-home system preamp is overridden and the bedroom
system will be heard throughout the house. As with the first example, the
whole-home system's in-wall volume controls would control the volume in
each individual zone.
Illustration 2: Combining Two Separate Systems
Volume
Control
Bedroom
System
Receiver
Volume
Control
Main System Preamp
Volume
Control
L R
INPUT A
CONTROL OUTPUT
12VDC 100mA
L
IN
12VDC
OUTPUT
150mA
OUT
AUTO SWITCH, LINE LEVEL
AL2
Selector
1
(see Illustration 2 )
Bedroom
Zone 1
Speakers
Speakers
From
Tape Record
Outputs
Zone 2
Speakers
From
Main
Outputs
Zone 3
Speakers
L R
875D SE
Amplifier
+ –
INPUT B
AL2
R
TRIGGER B TO A
SENSITIVITY DELAY
To BUS Inputs
from Augat.
®
Volume
Control
Volume
Control
Volume
Control
1–2 3–4 5–6 7–8
L R L R L R L R
SONAMP 875D SE AUTO-ON
PROTECTION
BBE ON
ACTIVE