Owner's Manual

– 13 – AtlasIED.com
Specifications are subject to change without notice.
Owner’s Manual
AA120G & AA240G
Commercial Mixer Amplifier
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Rear Panel
13. Pre-Out
The Pre-Out is a 3-Pin Balanced Euroblock connector. Line level output is Pre-Master Level. The input level potentiometers control the
amount of output signal at the Pre-Out ports. Use this output to connect signal to a secondary amplifier. Note: When the Remote
Level when set to Input 6, the Pre-Out level will also be adjusted for Input 6. The Pre Out will not be affected when the Remote Level
Control is set to Master.
14. Amp In
The Amp Input port can be used to insert an external signal processor such as EQ, limiter. When using the Amp In feature, the Amp
Direct In switch needs to be in the “On” position.
15. Bridge In/Out
Certain installations have the need to combine one or more powered mixers buss’s together. These mixers may be in different rooms
of an install but have the need to share a page or music content throughout the installation. These terminals provide a way to send
and receive balanced line level signals from the internal mix bus of a AA120G or AA240G. The “BRIDGE IN/OUT” feature is PRE Tone
Controls and Low Cut Filter the Bridge In/Out feature allows you to send and receive a balanced signal. This is important for allowing
longer distances between the mixers. Note: This function should ONLY be used with other Atlas Sound mixers that have this feature.
The Send and Receive signals are combined through the same terminals.
16. Bridge Select Port
The “Bridge Select (Sel)” terminals are the access point to activate the “Bridge In/Out” feature. To activate the feature connect the two
points together via an external contact closure. These two points must be connected to send or receive any signal. By connecting the
Bridge In/Out terminals of two AA240s, a simple room combining system can be accomplished. If using a remote switch and closing
it, the “Bridge Select (Sel)” will combine the amps as one, opening the switch will separate the two amps. Note: If combining 3 or 4
mixers together the output level will have to be adjusted before and after Bridge Sel terminals are connected (shorted) together. We
suggest utilizing the Remote Level control when using this feature.
Installation
CAUTION: Ensure the mixer amplifier is disconnected from the power source, with power switch in the “Off” position and all level
controls turned completely counterclockwise before beginning installation.
Use a standard 19" (483mm) equipment rack with an optional rack-mount kit. See below for dimensions.
You may also stack mixer amplifiers without using a cabinet or you may place a single mixer amplifier on a surface with 12" of air space
around the unit for convection cooling.
NOTE: When transporting in a rack, mixer amplifiers should be supported at the front and back.
When using an equipment rack, do not mount units directly on top of each other. Allow 2 rack units (3.5") between units for convection
cooling. The side walls of the rack should be a minimum of 2" (51mm) away from the mixer amplifier sides and the back of the rack
should be a minimum of 4" (102mm) from the mixer amplifier back panel.
Amp 1 (AA120G or AA240G) Amp 2 (AA120G or AA240G)