Atlas Sound AA120M Stereo Amplifier User Manual


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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
16
Example 2 - Priority Attenuator Override Application with Message Repeater and BGM
This application makes use of the internal relay and 24VDC in conjunction with Atlas Sound optional "PA"
override volume controls. A typical scenario would be for a Fire Station, where the background music
is turned down by the wall volume controls in the evening. A page is received on INPUT 1 and the VOX
mute triggers the AA120M relay sending 24VDC to the attenuator engaging the internal override relay and
allowing the page to come through alerting the sleeping firemen. A message repeater is connected for
caller on hold playback. Note: Remote BGM level control can also be accomplished via the VCA control
for INPUT 5.
• Connect a mic to INPUT 1. Note: The INPUT 1 Trim and Sens will need to be adjusted after all the
settings and connections have been set.
• Set Dipswitch 10 to the "MIC" position.
• Set INPUT 1 to Mute Send.
• Connect the telephone message repeater to INPUT 2.
• Set INPUT 2 to Mute OFF. Turn down INPUT 2 volume control so no audio will be present at the
speaker terminal.
• Connect Zone 3 to the Telephone PBX MOH port. Adjust INPUT 2 Zone 3 Level as needed.
• Connect a BGM player to INPUT 5. Note: The input gain of this channel may need to be change for
proper level balance. Dipswitch 6 allows you to select between a 100mV or 300mV input sensitivity.
• Connect the external level controls to the 70V speaker output.
Dipswitch Settings
Dipswitch 1 - OFF Dipswitch 2 - OFF (Not affected)
Dipswitch 3 - Depends on mic type Dipswitch 4 - ON (VOX)
Dipswitch 5 - OFF (Not affected) Dipswitch 6 - Set to the required gain
Dipswitch 7 - OFF Dipswitch 8 - OFF
Dipswitch 9 - OFF (Line) Dipswitch 10 - ON (Depends upon source signal)
Example 2
Vox M uteVox 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
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
10
010
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 Mute
Chime Module
70V
Speakers
Emergency
Paging Source
From BGM
CD Player
Message Repeater
0/7%2
0/7%2
0/7%2
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$)')4!,4)-%,%.3
$)')4!,4)-%,%.3
/0%.#,/3%
/0%.#,/3%
$)30,!9
$)30,!9
2%0%!4
2%0%!4
3#!.
3#!.
3#!.
3#!.
-%-/29
-%-/29
/0%.#,/3%
$)30,!9
2%0%!4
3#!.
3#!.
-%-/29
$4,
$4,
$4,
3+)0
3+)0
3+)0
3+)0
3+)0
3+)0
0,!9
0,!9
0!53%
0!53%
0,!90!53%
34/0
34/0
34/0
To PBX
MOH Port
Atlas
AT10-PA
Breaker
125V AC 4A
Push Reset
24V DC 200mA
Relay
+-
NC C NO
wiring to priority attenuators
Relay Wiring Detail
DCV
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