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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
©2007 ATLAS SOUND LP Printed in U.S.A. ATS002745 RevA 3/07 2
INSTALLATION INSTRUCTIONS
AA-SMG
SOUND MASKING MODULE
SET UP - PRIOR TO INSTALLING THE AA-SMG MODULE, YOU MUST DECIDE THE FOLLOWING.
1. Select White or Pink Noise (jumper J6)
2. Select Amp Direct or Mix Bus operation
(jumper J7).
3. Turn the module gain pot down counter clockwise (Left direction).
4. Turn EQ pot clockwise (Right direction).
5. Turn the AA120M power switch off.
6. Carefully inset the AA-SMG module into the card guider rails. Push until card is seated and the panels
are flush. Secure with screws.
7. Select the AA120M input module mode, switch #5 located on the rear panel of the amp.
8. Turn all levels down on amplifier. Note if the module is in Amp Direct mode, the only level control you
have for masking is the Gain pot on the AA-SMG. The Master and Input 6 levels on the AA120M are
bypassed. All other channels operate normally.
9. Turn the amp on. You should be hearing either White or Pink noise.
10. Whenever connecting the Line Out or Insert jack, always turn off the AA120M prior to connection.
11. Tune the system as needed. Always a good suggestion to refer to Atlas’s white paper on masking.
GAIN
EQ
LINE OUT
EQ INSERT
AA-SMG
TIP=SND
RNG-REC
SLV=GND
OUT TO AMP
J8
OFF ON
J11
PRE EQ
POST EQ
J10
AMP DIRECT
MIX BU
S
J5
WHITEPINK
LINE OUT
2
1
4
3
5
6
7
8
TIP
(SEND)
RING
(REC
)
SLEEVE
(GND
)
CONNECT TO
AA-SMG
SEND - CONNECT
TO EQ IN
TIP
(REC
)
SLEEVE
(GND
)
RECEIVE - CONNECT
TO EQ OU
T
TIP
(SEND)
SLEEVE
(GND
)
TIP
(HOT)
(GND)