Overview: The Atlas AA60G is a 4 input channel mixer/amplifier
designed for distributed business paging and background music systems, small to
medium speech privacy systems, and in applications where music on hold plus
paging is required. With one balanced microphone/line input and 3 stereo
unbalanced line inputs, the
AA60G will accommodate a variety of input sources including paging microphones,
cd players, and digital music receivers. A dip switch selectable matrix allows
the creation of a Zone 2 mix from any or all of the input sources for music or
messaging on hold applications. The amp also provides 70V, 100V, and 8Ω
connections, with 60 watts of output power.
Inputs: All inputs are located on the
rear panel and are as follows:
- Input 1: This is a 5-pin
Euroblock (Phoenix) connector that can accommodate a
mic or line level signal . It also includes Priority terminals for a "push-to-talk" mic, which mutes
the other inputs when activated. This input can also use voice-activated
(VOX) muting, which is triggered by a signal on the microphone and
includes a Threshold dial, which adjusts how loud the mic signal
must be to mute the other channels.
- Inputs 2,3 and 4: All three of these inputs are
stereo, unbalanced RCA inputs for running audio signals such as a CD or MP3
player. The stereo signal on these inputs gets summed to a mono signal.
Outputs: All outputs are located on the
rear panel and are as follows:
- Amplifier Output: The main speaker
output is a 4-terminal set screw block, that includes connections
for 100V, 70V, and 8Ω speaker configurations. This section has a
pre-installed protective metal cover that is easily removed to access
- Line Output: This section uses a
3-pin Euroblock (Phoenix) connector to pass the main audio signal out to
another amplifier. This output is not affected by the Master Level control
on the front panel.
- Zone 2 Output: This 4-pin Euroblock
(Phoenix) connector includes an MOH (Music on Hold) input, which ties into a
phone system, allowing any music source connected to the amp to play over a
phone line while a caller is on hold. There is also an 8Ω/1W output,
for a direct speaker connection, and also has an adjustment dial to control
the level of the Zone 2 signal.
DIP Switches: The AA60G includes a DIP
switch matrix for quick and easy configuration of inputs and outputs. This
allows for the following settings:
- 1 - CH1 Mic on/Line off
- 2 - CH1 Normal
- 3 - CH1 Priority
- 4 - CH1 Vox
- 5 - CH1 to Zone 2
- 6 - CH2 to Zone 2
- 7 - CH3 to Zone 2
- 8 - Phantom
Controls: The front panel controls of the
- Input Levels: Each of the four
inputs has its own level control.
- Master Level: Controls the overall
signal to the speaker output. This does not affect the Line Output level.
- Tone Controls: Recessed Bass and
Treble controls allow ± 10dB of adjustment at 100Hz and 10kHz.
- Power Switch
LED Indicators: A Power indicator lights
blue when the unit is powered on. A green LED above each of the Input Level
controls lights when the input signal level exceeds -40dBu and flashes brightly
if the signal reaches the distortion level. The Master Level section also
includes a green signal indicator, which lights when the signal exceeds -40dBu,
and a red Clip indicator that will flash brightly if the output signal reaches
the distortion level.
Phantom Power: If DIP switch 8 is turned
on, the AA60G will provide 15V of phantom power to Input 1. Condenser mics that
require more than 15V of phantom power will not work.
Rack Mount: The AA60G can be rack mounted
using the optional Atlas Rack Mount Kit (Item#
978AAGRMK2). This allows the amp
to be mounted in a standard 19" rack space. Joiner plates are also included,
with the Rack Mount Kit, so two of the AA60G's can be rack mounted side-by-side.
- Frequency Response: 50Hz - 20kHz
- Output Power: 60 Watts
- Zone 2 Output 1W: 1 Watt @ 8Ω
- Zone 2 Output 600Ω: 500mV into 600Ω
- Phantom Power: 15VDC
- Dimensions: Width = 8.25", Height =
3.875", Depth = 13.75"
- Weight: 9.4 lbs.
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