Specifications are subject to change without notice
AtlasSound.com
1601 JACK MCKAY BOULEVARD ENNIS, TEXAS 75119 U.S.A. • TELEPHONE: (800) 876-3333 • FAX: (800) 765-3435
©2006 ATLAS SOUND LP
Printed in U.S.A.
000106
ATS002187 RevA 01/06
PP
OWNER'S MANUAL
AA120/AA240 MIXER AMPLIFIER
6
FRONT PANEL DESCRIPTION
1.
Power Switch
This push on/push off switch applies power to the AA120/AA240.
2.
Power LED
This LED will illuminate when the AA120/AA240 is turned on.
3.
Peak LED
The PEAK LED will illuminate when the AA120/AA240 is in a clipping condition, caused by excessively
high input levels or a GAIN control is turned up too high. An occasional flash is OK.
4.
Signal LED
This LED will assist you in setting gain structure into the amp. With a source connected to the amp and
playing, turn up the channel gain control until this LED just starts to fl ash. Once all the sources
connected are playing, the SIGNAL LED may be on solid. This condition is normal.
5.
Master Gain Control
The
MASTER GAIN CONTROL
will raise or lower all the input channels together. A good starting point
for setting gain structure is to set MASTER GAIN CONTROL at the 12:00 position, and then adjust
the individual channels one at a time.
6.
Input 1-6 Controls
The gain for input channels 1-6 are controlled by these rotary controls. The MASTER GAIN CONTROL
must be turned up in addition to the input controls for audio to be present at the speaker
terminals.
7.
Bass Control
The BASS CONTROL is a shelving type control which will boost or cut bass frequencies at 100Hz at
the rate of ±10dB.
8.
Treble Control
The TREBLE CONTROL is a shelving type control which will boost or cut treble frequencies at 10kHz
at the rate of ±10dB.
Signal
Power
On
Off
Peak
Input 6
Input 5
Input 4
Input 3
Input 2
n
Bass
Treble
n
Input 1
Master
Power
6
7
1
2
3
4
8
5
