Manual

– 9 – AtlasSound.com
Specifications are subject to change without notice.
Owner’s Manual
AA50PHD
50W Mixer Amplifier
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Rear Panel
13. Pre Out
The PRE OUT RCA port is POST the preamp mix bus but PRE the Master Level. This feature is used in two applications.
A. Effects loop - Used in conjunction with the AMP IN connector, an effects loop can be created by connecting the PRE OUT
jack to a device such as an equalizer or DSP and then back out to the AMP IN connector.
B. Second Amplifier - If the amplifier output power is not enough, the mixer amp can be used as a preamp to feed a second
amplifier of choice. Note: The Master level will not be functional for the application.
14. Amp In
The AMP IN connector is useful for converting the AAPHD into a slave amp. When a line level signal is connected to this input, the
internal connection between the preamp and internal power amp is broken. Audio signals applied to this connector are POST tone
control and input level controls. The Master Level will function.
15. Multi Function DIP switch
Understanding the functionality of the DIP switches is key to maximizing the versatility of the AAPHD Series. When a switch is in the
up position, the function is “OFF or assigned to the feature stated”; when a switch is in the down position, the function is “ON or
assigned to the feature stated “.
• DP SW #1 - Zone 2 Assign Input 4 - When “ON”, Input 4 signal will be routed to the Zone 2 Output terminals. The signal
routed is PRE the front panel level controls.
• DP SW #2 - Zone 2 Assign Input 3 - When “ON”, Input 3 signal will be routed to the Zone 2 Output terminals. The signal
routed is POST the front panel level control but PRE the Master Level.
• DP SW #3 - Zone 2 Assign Input 2 - When “ON”, Input 2 signal will be routed to the Zone 2 Output terminals. The signal
routed is PRE the front panel level control.
• DP SW #4 - Zone 2 Assign Input 1 - When “ON”, Input 1 signal will be routed to the Zone 2 Output terminals. The signal
routed is PRE the front panel level control.
• DP SW #5 - Mute Receive Input 4 - When “ON”, Input 4 signals will be muted if a signal is present on Input 1 or if the
Remote Mute Terminals are shorted together.
• DP SW #6 - Mute Receive Input 3 - When “ON”, Input 3 signals will be muted if a signal is present on Input 1 or if the
Remote Mute Terminals are shorted together.
• DP SW #7 - Mute Receive Input 2 - When “ON”, Input 2 signals will be muted if a signal is present on Input 1 or if the
Remote Mute Terminals are shorted together.
• DP SW #8 - Input 2 Phantom Power - 24VDC is active when Input 1 is set to Mic mode and the switch is in the ON position.
Note: Only use this feature if you are using condenser microphones, otherwise leave in the “OFF” position.
• DP SW #9 - When in the “MIC” position, Input 1 will accept microphone level signals; when in the “Line” position, Input 1 will
accept line level or telephone signals.
• DP SW #10 - Remote Level Port selection switch assigns the port to control Inputs 2, 3, and 4 or the Master Level.
• DP SW #11 - RIS (Remote Input Select) activates the RIS terminals when in the ON position. When the RIS is active, NO input
will be present at the amplifier output unless the RIS input port pins are shorted to ground. See RIS ports.
• DP SW #12 - No Connection (NC)
Signal Peak
Master Level
5
64
3
2
1 9
0 10
8
7
Limit Power PHD
3
5
64
3
2
1 9
0 10
8
7
2
5
64
3
2
1 9
0 10
8
7
1
5
64
3
2
1 9
0 10
8
7
AA50PHD
Professional Mixer Amplifier
Power
120V AC 60Hz 150W
L & R
Summed
Input 4
1
Input 4
Off
On
2
Input 3
Off
On
3
Input 2
Off
On
Zone 2 Assign Input 1
RIS
4
Input 1
Off
On
5
Input 4
Off
On
7
Input 2
Off
On
6
Mute RCV
Input 3
Off
On
12
NC
NC
NC
NC
11
On
Off
9
Line/Tel
Mic
8
Phantom
Off
On
10
Remote
Level
Master
Input 2,3,4
G
–
RMT
Mute
+
–
+
VOX
Sens
PA Amplifier
Model AA50PHD
Output Rated 50W
Designed and Engineered
by Atlas Sound
Made in China
CLASS 2 WIRING
COM 4Ω 25V 70V
Amplifier Output
TrebleBass
Pre Out
Amp In
Chan 2Chan 3
Sum InSum In
Level
Zone 2 - Output
Return
Remote Level
Inputs
NC2,3,4
10V 4 3 2 GNDG
Remote Input
Select (RIS)
RIS
– +
600Ω
Channel 1 - Input