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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
18
Example 4 - Remote Level Control
Utilizing the optional plug-in modules and the Atlas Sound wall mounted VCA attenuators, we can produce
a conference room or hotel ballroom PA system with both remote Master and remote Background Music
(BGM) volume controls. Inputs 1-4 are wired to the microphone wall plates in the room and the BGM
comes from a CD player or Satellite radio receiver.
• Connect the mics to INPUTS 1-4. Note: The INPUT 1 Trim and Sens will need to be adjusted after
all the settings and connections have been set. Dipswitch 3 (Phantom power) has been turned on
for condenser type microphones.
• Dipswitches 7-10 have been set to "Mic".
• One wall mount volume control (Atlas Sound p/n AAVCC-10K) has been connected to the terminals
marked "VCA" and Dipswitch 2 is set for Master.
• Optional plug-in module, Atlas p/n AS-ML, has been inserted into the rear module slot, and the BGM
source has been plugged into the module’s line level inputs. Adjust the module’s trim control as
needed. The AS-ML is a mic or line input module with VCA capabilities.
• Another volume control (AAVCC-10K) has been wired into the VCA terminals on the MODULE. This
control will vary the BGM ONLY.
Dipswitch Settings
Dipswitch 1 - OFF Dipswitch 2 - OFF (Master)
Dipswitch 3 - ON Dipswitch 4 - OFF (CC)
Dipswitch 5 - ON (Amp Dir) Dipswitch 6 - Off (100mV)
Dipswitch 7 - ON (Mic) Dipswitch 8 - ON (Mic)
Dipswitch 9 - ON (Mic) Dipswitch 10 - ON (Mic)
Example 4
To 70V Speakers
Vox M uteVox M ute
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
100V70V25V
¡
8Com
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
100100
Sens
Input 4
Trim
Input 3
Trim
Input 2
Trim
Input 1
Trim
Mute
10010
0
10
0
10
0
100100100
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
12345678910
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 M ute
VoxMute
Send
Off
Rcv
CLASS 2 WIRING
Vox M ute
Chime Module
Background
Music Source
Atlas AAVC-10K
"Master Volume"
Atlas AS-ML
Module
See Module
Instructions
for VCA Wiring
Connections
Atlas AAVC-10K
"Master Volume"
Microphones