Atlas AA120M, Owner'S Manual, Page: 13 / 28

Specifications are subject to change without notice
AtlasSound.com
1601 JACK MCKAY BOULEVARD ENNIS, TEXAS 75119 U.S.A. • TELEPHONE: (800) 876-3333 • FAX: (800) 765-3435
©2006 ATLAS SOUND LP Printed in U.S.A. 00106 ATS002179 RevA 01/06 PP
OWNER'S MANUAL
AA120M MIXER AMPLIFIER
13
31. 24VDC Terminals
24VDC is available on these terminals and can supply current up to 250mA. This DC output is useful
for supplying DC voltage to trigger Atlas PA series attenuators.
Note: Do not short these terminals together or ground them.
32. Relay
The AA120M supplies contact points to trigger an external component. The SPDT (single pole double
throw) set of relay contacts have (C) Common, (NO) Normally Open, and a (NC) Normally Closed
contacts available on these terminals - 500mA Max . The relay can be activated via two methods,
remote contact closure or VOX mute. Refer to Dipswitch #4 "Relay Act" for relay trigger selection.
The (CC) Contact Closure setting works in conjunction with the Remote Mute feature. Refer to section
27 "REMOTE MUTE" for detailed information.
The (VOX) setting works in conjunction with a Mute Send from an assigned Input channel. Refer to
section 17 the "MUTE SWITCH" for detailed information. This feature is also known as VOX.
33. Loudspeaker Terminals
For loudspeaker connections, connect as follows or proceed to the setup section for typical wiring
diagrams.
COM - Speaker common or negative connection
8 OHM - Connect to direct coupled loudspeakers
25V - Connect to transformer coupled, 25V loudspeakers with a total load impedance of
no less than 5.2 Ω
70V - Connect to transformer coupled, 70.7V loudspeakers with a total load impedance of
no less than 41.6 Ω
100V - Connect to transformer coupled, 100V loudspeakers with a total load impedance of
no less than 83 Ω
34. Circuit Breaker
The circuit breaker is designed to trip and shut down the AA120M "Unswitched Outlet". After correcting
the cause of the breaker tripping, reset the breaker by pushing in on the tab.
Vox Mute Vox Mute
Input 5
Level
Zone 3
Level
Zone 2
10 0 10 0 10 0 10 0 10 0 10 0 10 0
G – + G – + G – + G – +
Unswitched Outlet
120V AC 60Hz
Max 500W
Outlet Breaker
125V AC 4A
Push Reset
120V AC 60Hz 300W
100V 70V 25V ¡ 8 Com
24V DC 200mA Relay
+ –
NC C NO
– + + –
Zone 2 Out
1W 8
Zone 3 Out
¡ ¡ 600 Remote Mute VCA
+ –
G
Sel
Bridge
In/Out
Input 6
Level
Zone 3
Level
Zone 2
10 0 10 0
Sens
Input 4
Trim
Input 3
Trim
Input 2
Trim
Input 1
Trim
Mute
10 0 10
0
10
0
10
0
10 0 10 0 10 0
Send
Off
Rcv Send Rcv
Off
Send
Off
Rcv Send Off
10 0
Zone 2 Level Zone 3 Level
Input 3 Input 2 Input 1
Pwr In Tape Out
1 2 3 4 5 6 7 8 910
R
Line Out
L
Input 5 Pre Out
Input 6
Input 4
Zone 2 Level Zone 3 Level Zone 2 Level Zone 3 Level Zone 2 Level Zone 3 Level
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Speaker Output 120W
Vox Mute
VoxMute
Send
Off
Rcv
CLASS 2 WIRING
Vox Mute
Chime Module
31
33
32 34