Russound AB-3.2 User manual

Data Sheet
AB-3.2 Automatic A/B Selector
The Russound AB-3.2 Automatic A/B Selector pro-
vides automatic switching between two amplified
audio sources. It offers the convenience of sharing
one set of speakers in a given location between two
different sources such as a local stereo and a multi-
room audio system.
For example, the AB-3.2 can be used to interrupt a
distributed audio signal to play a local source through
the room speakers, or it can be used to interrupt a
local source (e.g., television in a lobby) with paging
so announcements can be heard over the speakers.
The AB-3.2 normally passes the amplified signal con-
nected to its A input. When it senses a signal at its B
input, the selector switches to that signal. When that
signal ceases, it switches back to the original signal.
The AB-3.2 includes a sensitivity trigger adjustment to
adjust the volume level where switching occurs. It
also includes a delay adjustment to prevent unintend-
ed switching during quiet passages in a signal such
as a movie soundtrack.
The improved design of the AB-3.2 places all connec-
tions on one surface for easier access and increased
flexibility. The space-saving design will fit into many
popular structured wiring panels. Detachable color-
coded snap connectors allow connections to be
prewired before installation for quick, easy and reli-
able installations.
The AB-3.2 is powered by a 12VDC detachable power
supply (included). Country-specific 12VDC detachable
power supplies can be substituted for use outside the
U.S.
Like all Russound products, this selector is ideal for
use in either home or office in a wide variety of appli-
cations.
Key Features:
• Automatically switches to alternate amplifier input
when signal is present
• Sensitivity and delay adjustments to fine tune
each installation
• Removable color-coded snap connectors make
connections easier and more reliable
• LEDs provide visual indication of power on and
switching engaged to reduce installation time and
eliminate guesswork
• Designed for quality audio performance and long-
term reliability
Improved design saves space and installation time, adding convenience and flexibility

Peak audio power handling: 200 watts per channel
Amplifier and speaker connectors: Detachable color-coded snap connectors
Maximum wire size: 14 AWG stranded
Indicators: Power, Status
Controls: Trigger sensitivity, Delay
Minimum trigger level: 15 mV
Delay range: 0 – 30 seconds
Power requirement: 12 VDC 300 mA, (power supply included*)
Dimensions: 6.5" W x 2.125" H x 1.75" D
(165 x 54 x 44.5 mm)
Weight: 1.4 lb. (0.635 kg)
*Transformer power supply included for US markets
CHINA
R- R+L+ L- R- R+L+ L- R- R+L+ L-
Speaker and amplifier connections Operating adjustments
Switching status
12VDC 300mA
Power and indicator
Since 1967, innovation, quality and reliability have been the core of the Russound product tradition. Today, Russound offers everything for
enjoying multiroom audio-video in your home. All distributed audio-video solutions are built to high standards and designed with the unique
consideration of making products that are easy to enjoy and live with.
5 Forbes Road, Newmarket, New Hampshire 03857 603-659-5170 www.russound.com
©2005 Russound. All rights reserved. All trademarks are the property of their respective owners. Specifications are subject to change without notice.
Russound is not responsible for typographical errors or omissions. 04/05
Specifications
Limited Warranty
The Russound AB-3.2 Automatic A/B Selector is fully guaranteed for two (2) years from the date of purchase against all defects in materials
and workmanship. During this period Russound will replace any defective parts and correct any defect in workmanship without charge for
either parts or labor. For this warranty to apply, the unit must be installed and used according to its written instructions. If service is neces-
sary, it must be performed by Russound. The unit must be returned to Russound at the owner’s expense and with prior written permission.
Accidental damage and shipping damage are not considered defects under the terms of the warranty. Russound assumes no responsibility
for defects resulting from abuse or servicing performed by an agency or person not specifically authorized in writing by Russound. Damage
to or destruction of components due to improper use voids the warranty. In these cases the repair will be made at the owner’s expense. To
return for repairs, the unit must be shipped to Russound at the owner’s expense, along with a note explaining the nature of the service
required. Be sure to pack in a corrugated container with at least 3 inches of resilient material to protect the unit from damage in transit.
Russound sells products only through authorized Dealers and Distributors to ensure that customers obtain proper support and service. Any
Russound product purchased from an unauthorized dealer or other source, including retailers, mail order sellers and online sellers will not
be honored or serviced under existing Russound warranty policy. Any sale of products by an unauthorized source or other manner not
authorized by Russound shall void the warranty on the applicable product.