AA120M MIXER AMPLIFIER

OWNER'S MANUAL

Example 2 - Priority Attenuator Override Application with Message Repeater and BGM

This application makes use of the internal relay and 24VDC in conjunction with Atlas Sound optional "PA" override volume controls. A typical scenario would be for a Fire Station, where the background music

is turned down by the wall volume controls in the evening. A page is received on INPUT 1 and the VOX mute triggers the AA120M relay sending 24VDC to the attenuator engaging the internal override relay and allowing the page to come through alerting the sleeping firemen. A message repeater is connected for caller on hold playback. Note: Remote BGM level control can also be accomplished via the VCA control for INPUT 5.

Connect a mic to INPUT 1. Note: The INPUT 1 Trim and Sens will need to be adjusted after all the settings and connections have been set.

Set Dipswitch 10 to the "MIC" position.

Set INPUT 1 to Mute Send.

Connect the telephone message repeater to INPUT 2.

Set INPUT 2 to Mute OFF. Turn down INPUT 2 volume control so no audio will be present at the speaker terminal.

Connect Zone 3 to the Telephone PBX MOH port. Adjust INPUT 2 Zone 3 Level as needed.

Connect a BGM player to INPUT 5. Note: The input gain of this channel may need to be change for proper level balance. Dipswitch 6 allows you to select between a 100mV or 300mV input sensitivity.

Connect the external level controls to the 70V speaker output.

Dipswitch Settings

 

 

 

 

Dipswitch 1 - OFF

Dipswitch 2

- OFF (Not affected)

 

Dipswitch 3

- Depends on mic type

Dipswitch 4

- ON (VOX)

 

 

Dipswitch 5

- OFF (Not affected)

Dipswitch 6

- Set to the required gain

Dipswitch 7

- OFF

Dipswitch 8

- OFF

 

 

Dipswitch 9

- OFF (Line)

Dipswitch 10 - ON (Depends upon source signal)

 

 

 

wiring to priority attenuators

 

 

 

 

 

Breaker

 

 

 

 

 

125V AC 4A

Relay

24V DC 200mA

 

 

 

Push Reset

 

 

 

NC

C

NO - +

Atlas

AT10-PA

DCV

70V

Speakers

To PBX

MOH Port

Relay Wiring Detail

Example 2

Unswitched Outlet

Outlet Breaker

 

 

 

 

 

 

 

 

 

Input 6

 

 

 

 

 

Input 5

 

 

Input 4

Input 3

 

Input 2

 

Input 1

 

Mute

 

120V AC 60Hz

125V AC 4A

 

 

 

 

 

 

 

 

Zone 2

Zone 3

 

 

 

 

 

 

 

 

 

 

Max 500W

Push Reset

 

 

 

 

 

 

Bridge

 

 

 

 

Zone 2

Zone 3

Trim

Trim

 

Trim

 

 

Trim

 

Sens

 

 

Relay

24V DC 200mA

Zone 2 Out

Zone 3 Out

 

Remote Mute

VCA

In/Out

Sel

Level

Level

 

 

 

 

 

 

 

 

 

 

 

1W 8

600

 

 

 

 

 

1 2 3 4 5 6 7 8 910

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NC C NO – +

– + – +

 

 

 

G – +

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

10 0

 

10

 

 

0

 

10

0

 

10

0

10

0

10

0

10

 

0

10

0

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Level

 

Level

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Vox Mute

 

 

Vox Mute

 

Vox Mute

 

 

Vox Mute

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Send

 

 

Rcv

 

 

Send

 

Rcv

Send

 

Rcv

 

 

Send

 

Off

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Off

 

 

 

Off

 

 

Off

 

 

 

 

 

 

 

Speaker Output 120W

 

 

 

 

 

 

 

 

 

 

Zone 2 Level

Zone 3 Level

Zone 2 Level

Zone 3 Level

Zone 2 Level

Zone 3 Level

Zone 2 Level

Zone 3 Level

 

 

 

 

 

 

 

Pwr In

 

 

Tape Out

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Com

8

25V

70V

100V

 

 

 

 

 

 

 

 

0

10

0

 

10

0

10

0

10

0

10

0

10

0

10

0

10

 

 

 

 

 

Input 6

 

 

 

R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Chime Module

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VoxMute

 

 

 

L

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Send

Rcv

 

 

 

 

 

G

 

+

 

 

G

+

G

+

 

 

G

+

 

 

 

 

 

 

 

 

 

 

Off

Pre Out

Input 5

Line Out

 

 

Input 4

 

 

 

Input 3

 

Input 2

 

 

Input 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

120V AC 60Hz 300W

 

 

CLASS 2 WIRING

 

 

 

 

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From BGM

0/7%2

Message Repeater

CD Player

 

Specifications are subject to change without notice

Emergency

Paging Source

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.

00106

ATS002179 RevA 01/06

PP

 

 

 

 

16

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Atlas Sound AA120M specifications Off

AA120M specifications

The Atlas Sound AA120M is a versatile and powerful amplifier designed primarily for commercial and professional audio applications. This robust unit stands out due to its impressive features, advanced technologies, and impeccable sound characteristics, making it a popular choice for venues such as conference halls, schools, and places of worship.

At the heart of the AA120M is its 120-watt output, which ensures that audio distribution is both loud and clear, capable of powering a variety of speaker systems. Its high-efficiency design incorporates a Class D amplification technology that not only enhances sound quality but also minimizes power consumption. This efficient power management results in lower heat output, which prolongs the lifespan of the unit and reduces the need for extensive cooling systems.

The AA120M is equipped with multiple input options, including balanced XLR and unbalanced RCA connectors, accommodating various audio sources. The microphone input features a priority mode, allowing announcements or important messages to override background music seamlessly. This feature is particularly beneficial in environments where announcements are critical to safety and communication.

Sound quality is further enhanced by the built-in EQ controls, allowing users to shape the audio output to suit the acoustics of their environment or personal preferences. The amplifier also offers a low-impedance operation, which supports a wide range of speaker systems, enhancing compatibility across different setups.

Another noteworthy characteristic of the AA120M is its built-in limiter circuitry, designed to prevent audio peaks that could lead to distortion or damage to connected speakers. This protective feature makes it an ideal choice for public address systems where audio integrity is paramount.

Additionally, the amplifier includes a sleek, rack-mountable design, making it easy to integrate into existing audio setups. Its durability and reliability ensure that it can handle extended use without compromising performance.

In summary, the Atlas Sound AA120M is a multifunctional amplifier that combines power, efficiency, and flexibility. With its advanced features and technologies, it stands out as a compelling choice for anyone looking to enhance their audio experience in commercial or professional settings, delivering clear and powerful sound with every use.