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Atlas AA240 Bedienungshandbuch Seite 10

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AtlasSound.com – 10 –
Specifications are subject to change without notice.
Owner’s ManualAA240 Mixer Amplifier
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800.876.3333 • Fax: 800.765.3435
20. Bridge Select
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 con-
nected (shorted) together. We suggest utilizing the Remote Level control when using this feature.
21. Input 1
Balanced mic or line level signals connect to the (+) (–) and (G) terminals. Refer to the chart above “Multi
Function Dipswitch” for the following setting. Dipswitch 6, labeled “Input 1” must be set to the proper position for mic or Tel/Line
level. If you are connecting an unbalanced line level input, tie (short) the (G) and (–) terminals together. An optional Input Isolation
Transformer (AAIT-600) is available if a ground loop problem exists. See page 20 for transformer installation. Contact Atlas Sound
for more details on the Input Isolation Transformer.
Note: Input 1 cannot be muted from other channels. This channel is the VOX mute send to the other inputs that are set to Mute
Receive. The sensitivity and threshold for the VOX send works in conjunction with the Input 1 Trim and the Input 1 Sens.
22. Inputs 2-5
Inputs 2-5 are balanced, line or mic level (Refer to Dipswitch Bank “B” 2-6 for setting input sensitivity). For wiring unbalanced
inputs, tie (short) the (G) and (–) terminals together.
Note: The Phantom Power when activated is present for both Line and Mic modes. In some Line source input application the the
Phantom Power may cause popping. This can be corrected by adding a 10uf - 100uf/ 50V electrolytic capacitor in series with
the input. Contact Atlas for an application note.
23. Input 6
INPUT 6 consists of a pair of stereo summing, line level inputs. Connect unbalanced audio outputs here such as CD players or
audio from DVD players.
24. Line Out A/B
The LINE OUT connector is useful for providing unbalanced line level signal to another amplifier or other external devices. Prior to
using this feature one must understand where the internal signal pick up point is so you can decide if it is correct for your applica-
tion. We suggest you refer to the block diagram of the AA240 to have a complete understanding of the signal flow.
Note the following conditions for LINE OUT:
A. Post Low Cut Filter
B. Post Tone Controls (meaning the settings for the Bass and Treble controls affect this signals output).
Note: Refer to Low Cut Filter Switch for complete understanding of the LCF feature.
C. Post Amp In (meaning any signal that is inserted into the Pre AMP In jack will be present at the Line Out).
VCA
In/Out
Bridge
Sel
Zone 2 Out
Ω
1W 8
Ω
600
Remote
Mute
Input 2
Tr im
Input 3
Tr im
Input 5
Input 6
Off
On
Off
On
Off
On
Off
On
Input 2
On
Off
Line
Mic
Line
Mic
Line
Mic
Sens
Input 1
Input 2Input 3
Input 4Input 5 Phantom
On
Off
Input 6
1
2 3
4
5
300mV
100mV
6
7
Master
Line
Mic
Mic
Tel/Line
Off
On
Mute Rcv
Input 6
Input 5
Input 4
Input 3
VCA
51
2 3
4
8
Low Cut
6
Input 1
Sens
Input 1
Tr im
Input 4
Tr im
Input 5
Trim
Zone 2
Level
B
A
Line Out
Speaker Output 240W
Ω
100V70V25V4Com
+ +
G
+
R
L
Pre Out
Pwr In
Tape Out
Input 6
Input 4 Input 3 Input 2 Input 1
Unswitched Outlet
120V
~ 60Hz
Max 500W
Outlet Breaker
125V
~ 4A
Push Reset
G
+
G
+
G
+
G
+
+
G
120V AC 60Hz 700W
1601 Jack McKay Blvd., Ennis, TX 75119
(800) 876-3333 AtlasSound.com
CLASS 2 WIRING
10
0
10
0
0 10
On
Off
Input 6
Input 5
Input 4
Input 3
Input 2
10
0
10
0
10
+
–
0
Bass
Treble
0
10
+
–
Input 1
Master
Power
PowerLimitPeakSignal
VCA
In/Out
Bridge
Sel
Zone 2 Out
Ω
1W 8
Ω
600
Remote
Mute
Input 2
Trim
Input 3
Trim
Input 5
Input 6
Off
On
Off
On
Off
On
Off
On
Input 2
On
Off
Line
Mic
Line
Mic
Line
Mic
Sens
Input 1
Input 2Input 3
Input 4Input 5 Phantom
On
Off
Input 6
1
2 3
4
5
300mV
100mV
6
7
Master
Line
Mic
Mic
Tel/Line
Off
On
Mute Rcv
Input 6
Input 5
Input 4
Input 3
VCA
51
2 3
4
8
Low Cut
6
Input 1
Sens
Input 1
Trim
Input 4
Trim
Input 5
Trim
Zone 2
Level
B
A
Line Out
Speaker Output 240W
Ω
100V70V25V4Com
+ +
G
+
R
L
Pre Out
Pwr In
Tape Out
Input 6
Input 4 Input 3 Input 2 Input 1
Unswitched Outlet
120V
~ 60Hz
Max 500W
Outlet Breaker
125V
~ 4A
Push Reset
G
+
G
+
G
+
G
+
+
G
120V AC 60Hz 700W
1601 Jack McKay Blvd., Ennis, TX 75119
(800) 876-3333 AtlasSound.com
CLASS 2 WIRING
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