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Atlas Sound AA50PHD
3-Input, 50W Mixer Amplifier with Automatic System Test (PHD)


The Atlas Sound AA50PHD is a four input channel mixer amplifier designed for distributed business paging and background music (BGM) systems...
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Atlas Sound AA50PHD
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The Atlas Sound AA50PHD is a four input channel mixer amplifier designed for distributed business paging and background music (BGM) systems, small to medium speech privacy systems, and in applications where music on hold (MOH) plus paging is required. With one microphone/line input and three stereo line inputs, Atlas Sound's AA50PHD will accommodate a variety of input sources including paging microphones, media players, and digital music receivers. The Atlas Sound AA50PHD includes a patent pending automatic system test, the Push Here Diagnostic (PHD).

What Sets the AAPHD Series Apart?
The PHD button is designed to check the connected speaker lines for wiring and impedance errors. This test can be activated once all speakers are connected and the circuit automatically verifies that the attached speakers' tap settings do not exceed the amplifier's rated power, no speakers are mistakenly tapped at 8Ohms, and the speaker wire is free from shorts.

The unit also incorporates a Remote Input Selection and Remote Level Control feature that allows the integrator to use a remote wall plate (Atlas Sound model WPD-RISRL) and allow the user to select the input and adjust the volume from that wall plate up to 200 feet from the amplifier.

The Atlas Sound AA50PHD provides 50-watts output power into 25V, 70.7V, or 4Ohm speaker systems. Rear panel DIP switch allows for creation of Zone 2 output using either Input 1, 2, 3 or 4. The unit can also be set-up to mute Inputs 2, 3, and 4 based on signal from Input 1, for paging applications where other input sources need to be muted during a page. Input 1 is either Mic or Line input selectable and Phantom Power is an option when using Input 1 Mic input.

Atlas Sound AA50PHD Features:

50W into 25V/70.7V and 4Ohm Loads
Rear Mounted DIP Switch Allows Mute Receive for Inputs 2 and 3
Contact Closure Mute Terminals
Variable Mute Sensitivity Control for Input 1
Preamp In for External Processors
Line Output
Remote Input Select (RIS)
Remote Level Control
Input Assignable Zone 2 Output
Three Unbalanced, Summing Line Level Inputs
Balanced Mic/Line/Tel Input w/ Phantom Power
Automated Diagnostic System Test (Push Here Diagnostic)

Atlas Sound AA50PHD Specifications:

Frequency Response: 50Hz - 15kHz
Connector Type: 4 Position Phoenix 3.5mm Pitch
Power Output: Max. Average Power @ 50Hz-15kHz with .5% THD, 4Ohm 50W RMS
Height: 3.66" (93mm)
Width: 8.27" (210mm)
Depth: 10.87" (276mm)
Wall Plate for AA-PHD Mixer/Amplifiers
Atlas Sound WPD-RISRL Wall Plate for AA-PHD Mixer/Amplifiers
The Atlas Sound WPD-RISRL is a decora-style wall plate that is designed for use with the AA50PHD, AA100PHD, AA200PHD, or AA400PHD mixer amplifiers to use the remote input selection (RIS) feature. The WPD-RISRL features an audio source ...
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