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.
000106
ATS002187 RevA 01/06
PP
OWNER'S MANUAL
AA120/AA240 MIXER AMPLIFIER
14
Example 2 - Hotel Room Combining Using Two AA120s/AA240s
This example utilizes the combining feature of the Atlas AA120/AA240 mixer amplifiers. The drawing
below shows the equipment connections for two hotel ballrooms, separated by a moveable air wall. The
hotel needs to be able to have the audio system operate as one large unit (air wall open) or two discreet
systems (air wall closed). As indicated in the example, a BGM CD player is shared between the two
AA120s/AA240s, via a "Y" cable, connected to input 6 of each mixer amp. The Bridge terminals of both
amplifiers are connected together, through a DPST switch that makes (combines) or breaks (separates)
the Bridge connections between the amplifiers. When the switch is closed, any audio signal into either
amp will be present at both amplifier's speaker outputs. A volume control and DPST switch (see drawing
for clarity) controls the background music level and turns the music on or off in each room. For emergency
evacuation purposes, a signal from the hotel's fire alarm system is connected to channel 1 of both
amplifiers, with the mute sensitivity adjusted as needed. All other channels are set for mute receive and
will mute when the siren tone is present on channel 1.
Dipswitch Settings
Dipswitch "A" 1-6
2-6 - On
Dipswitch "B" 1-8
Dipswitch 1 - (Set To The Required
Gain)
Dipswitch 2 - "Mic"
Dipswitch 3 - "Mic"
Dipswitch 4 - "Mic"
Dipswitch 5 - "Mic"
Dipswitch 6 - "Mic"
Dipswitch 7 - Will depend on type of
microphones
used
Dipswitch 8 - Will depend if the
remote volume control will control
just the BGM or be a Master Volume
Control.
Example
2
Siren tone from building EVAC system,
Ch. 1 set for mute send.
,%6%,
POWER
POWER
POWER
'
'
'
'
'
Breaker
125V AC 4A
Push Reset
Unswitched
120V AC 60Hz
Max 500W
Input 1
Input 2
Input 3
Input 4
Input 6
Tape Out
Pwr In
Pre Out
L
R
G M
'
Com
8
Ω
25V
70V
100V
SP Out
Line Out
A
B
Zone 2
Level
Input 5
Trim
Input 4
Trim
Input 1
Trim
Input 1
Sens
6
Low Cut
8
4
3
2
1
5
VCA
Input 3
Input 4
Input 5
Input 6
Mute Rcv
On
Off
Tel/Line
Mic
Mic
Line
Master
7
6
100mV
300mV
5
4
3
2
1
Input 6
Off
On
Phantom
Input 5 Input 4 Input 3 Input 2 Input 1
Sens
Mic
Line
Mic
Line
Mic
Line
Off
On
Input 2
On
Off
On
Off
On
Off
On
Off
Input 6
Input 5
Input 3
Trim
Input 2
Trim
Rmt
Mute
600
Ω
1W 8
Ω
Zone 2 Out
Sel
Bridge
In/Out
Vca
120V AC 60Hz 500W
G
+
+
G
+
G
+
G
+
G
Breaker
125V AC 4A
Push Reset
Unswitched
120V AC 60Hz
Max 500W
Input 1
Input 2
Input 3
Input 4
Input 6
Tape Out
Pwr In
Pre Out
L
R
G M
+
+
+
G
Com
8
Ω
25V
70V
100V
SP Out
Line Out
A
B
Zone 2
Level
Input 5
Trim
Input 4
Trim
Input 1
Trim
Input 1
Sens
6
Low Cut
8
4
3
2
1
5
VCA
Input 3
Input 4
Input 5
Input 6
Mute Rcv
On
Off
Tel/Line
Mic
Mic
Line
Master
7
6
100mV
300mV
5
4
3
2
1
Input 6
Off
On
Phantom
Input 5 Input 4 Input 3 Input 2 Input 1
Sens
Mic
Line
Mic
Line
Mic
Line
Off
On
Input 2
On
Off
On
Off
On
Off
On
Off
Input 6
Input 5
Input 3
Trim
Input 2
Trim
Rmt
Mute
600
Ω
1W 8
Ω
Zone 2 Out
Sel
Bridge
In/Out
Vca
120V AC 60Hz 500W
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Ballroom "A" Microphones
Ballroom "B" Microphones
From Annunciator Panel
ON
OFF
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ON
OFF
5
4
3
2
6
1
8
7
6
5
4
3
2
1
5
4
3
2
6
1
8
7
6
5
4
3
2
1
0
10
0
10
0
10
0
10
0
10
0
10
0
10
ON
OFF
Room Combine
Switch
Music On/Of
f Room B
Remote V
olume Room B
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BGM Source
Tape Record Ballroom "B"
Tape Record Ballroom "A"
70.7V Speakers Ballroom "B"
70.7V Speakers Ballroom "A"
Music On/Of
f Room A
Remote V
olume Room A
B A
B A
