Information Sheet

1601 JACK MCKAY BLVD. ENNIS, TEXAS 75119 U.S.A.
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AtlasSound.com
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©2012 Atlas Sound L.P. All rights reserved. Atlas Sound and Strategy Series are trademarks of Atlas Sound L.P. All other trademarks are the property of their respective owners. ATS002459 RevB 8/12
Architect and Engineer Specifications
The mixer/amplifier shall be Atlas Sound Model AA120. The mixer/
amplifier shall control and mix up to six input signals and deliver an
audio output of 120 Watts into 8Ω, 25V, 70.7V, and 100V. The amplifier
output shall be transformer isolated with a frequency response 50Hz
– 20kHz (-3dB) with less than 0.5% THD at rated output. The output
regulation shall be less than 2dB, no load to full load. It shall be capable
of operation from a 110/120VAC 50Hz/60Hz line. The amplifier shall have
thermal and short circuit protection.
The mixer/amplifier shall have a switch-selectable MIC/TEL balanced
input to accept either low impedance microphone or Tel/Line Level
signals with -50/-10dBv sensitivity. The MIC/TEL input impedance shall
be 10kΩ or 600Ω with optional input transformer. The MIC/TEL input
shall include an auto mute (VOX Mute) sensitivity control. The MUTE
SENSE control will allow threshold adjustment of mute activation. The
mixer/amplifier shall include four switch selectable MIC/Line inputs.
The MIC/Line input impedance shall each be 10kΩ. The mixer/amplifier
shall have defeatable global Phantom power. The mixer/amplifier shall
include a stereo summing auxiliary input, unbalanced, -10dBv, with dual-
RCA jacks. The Auxiliary input impedance shall be 10kΩ. The mixer/
amplifier shall include two Zone 2 outputs, a 1 Watt at 8Ω output and
a transformer isolated 600Ω output with a maximum level of 1.5V. The
Zone 2 outputs shall be assigned to the auxiliary input and has one
rear panel rotary level control for both outputs. The mixer/amplifier rear
panel input and output interconnects shall be via Phoenix and terminal
connectors. The mixer/amplifier Mute assignment for Inputs 2-6 is via
a rear panel dipswitch. Input Mute is accomplished via the REMOTE
MUTE function, controlled by an external switch closure or via Input 1
VOX. The Mute assignment shall not affect the Zone 2 output.
The mixer/amplifier shall have a 400Hz 6dB per octave low cut filter.
The filter can be defeated via the dipswitch located on the rear panel.
When engaged, the Bass Tone control is bypassed. The mixer/amplifier
shall have a Tape-Out RCA unbalanced output. The Tape -Out shall be
Pre Tone and the Low Cut Filter. The mixer/amplifier shall have a Line A
and Line B RCA unbalanced output. The Line outputs are POST Master
Level, tone controls, Low Cut Filter, and Power Amp In. The mixer/
amplifier shall have a Pre-Out RCA unbalanced output. The Pre Out shall
be POST Tone, Low Cut Filter and Pre Master Level. The mixer/amplifier
shall have a Power Amp input for use with an external signal processor.
The Power Amp In shall be Pre Master Level. Both the Line and Pre
Outputs shall be calibrated to 0dBv and equals 1V RMS out.
The mixer/amplifier shall incorporate a balanced Bridge Input/Output
allowing multiple amplifiers to be combined on one mixed bus. The
Bridge input shall be activated via an external switch closure. The mixer
amplifier shall incorporate VCA remote level control circuitry for either
Master or Auxiliary level via an optional external 10K potentiometer.
The AA120 front panel shall include volume controls for Inputs 1-6 and
one Master Level control. System Signal, Peak and Power LEDs shall
also be incorporated. The mixer/amplifier front panel shall also include
Bass and Treble tone controls (100Hz and 10kHz, ±10dB). The tone
controls shall not affect the Zone 2 output. The mixer/amplifier front
panel shall include an AC Mains power switch.
A rear panel AC receptacle (unswitched) shall be included for connection
of external equipment. Dimensions (W x H x D) shall be 16.54"
(420.1mm) x 4.21" (107.mm) x 14.06" (357.1mm). Front panel finish and
material shall be black ABS resin and case finish and material shall be
black powder coated sheet steel.
The optional rack-mount bracket kit shall be an Atlas Sound AARMK2-0.
The optional input one transformer shall be an Atlas Sound AAIT-600.
The optional level security covers shall be an Atlas Sound AAVCC-5.
The optional VCA 10kΩ level control shall be an Atlas Sound AAVC-10K.
AA120
(Back View)