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Atlas AA120 Owner's Manual

Mixer amplifier
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OWNER'S MANUAL
AA120/AA240 MIXER AMPLIFIER
Signal
Peak
Power
Input 1
Input 2
Input 3
Input 4
Input 5
Input 6
Power
On
Off
Master
Bass
Treble
AA120/AA240 Atlas Sound Mixer Amplifi er
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

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  • Page 1 Input 6 Power Master Bass Treble AA120/AA240 Atlas Sound Mixer Amplifi er 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.

  • Page 2: Table Of Contents

    AA120/AA240 MIXER AMPLIFIER TABLE OF CONTENTS Safety Instructions………………………………………………………………………………………………….2 Introduction, Features, and Applications...……………………..3 Safety Precautions...……………………...………………………4 Front Panel Description…………………………………………………………………………………………...6 Rear Panel Description…………………………………………………………………………………………….7 Quick Start Examples……………………………………………………………………………………………..13 Wiring the AA120/AA240………………………………………………………………………………………….16 Rack Mount Kit.………….………………………………………………………………………………………...18 Block Diagram……………………………………………………………………………………………………..19 Optional Input Transformer Installation………………………………………………………………………….20 Specifi cations………………………………………………………………………………………………………21 Warranty...……………………………………..24 SAFETY INSTRUCTIONS Please be sure to read all the instructions carefully before using this product.
  • Page 3 Congratulations and thank you for purchasing the Atlas Sound Model AA120/AA240 professional grade mixer/amplifi er. An integral part of the AA Series of commercial products, the AA120/AA240 was engineered and integrated with unique features to assist the contractor/installer in today’s commercial business audio environment.

  • Page 4: Safety Precautions

    Should any of the following irregularities occur during use, immediately switch off the power, disconnect the power cord from the AC outlet contact Atlas Sound. Do not to attempt to continue operation with the product as this may cause fi re or electric shock.
  • Page 5 fi re. • Contact Atlas Sound for instructions on cleaning the inside of the unit. Large accumulations of dust inside the unit may result in heat buildup and fi re.

  • Page 6: Front Panel Description

    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.

  • Page 7: Rear Panel Description

    9. Dipswitch "A" Positions 1-6 Understanding the functionality of the dipswitches is key to getting the most out of the AA120/AA240. Whether the switch is in the "Up" or "Down" position is critical to the function of the amplifi er. Note: Mispositioning any of these switches may cause harm to the speakers or amplifi...
  • Page 8 AA120/AA240 MIXER AMPLIFIER Input 6 Sens 100mV 300mV Dipswitch 6 - When set the "Tel/Line" position, Input 1 sensitivity is suitable for telephone paging and line level signals. When set to the "Mic" position, the sensitivity is set for microphone signals.
  • Page 9 These terminals provide a way to send and receive balanced line level signals from the internal mix bus of the AA120/AA240. The "BRIDGE IN/OUT" feature is PRE Tone Controls and Low Cut Filter The Bridge In/Out feature allows you to send and receive a balanced signal. This is important for allowing longer distances between the mixers.Note: This function should only be used with other Atlas...
  • Page 10 By connecting the Bridge In/Out terminals of two AA120/AA240's, a simple room combining system can be accomplished. If using a remote switch and closing it, the "Bridge Select (Sel)" will combine the amps as one, opening the switch will separate the two amps.
  • Page 11 See the connection diagram in the setup section of this manual. 26. Pwr In The AMP IN connector is useful for converting the AA120/AA240 into a slave amp. When a line level signal is connected to this input, the internal connection between the preamp and internal power amp is broken.
  • Page 12 29. Unswitched Outlet The 120VAC outlet is energized at all times when the AA120/AA240 power cord is connected to a live duplex outlet. Useful for connecting Atlas work lights, etc. Keep the total power draw below 500W (AA120) or 750W (AA240).

  • Page 13: Quick Start Examples

    AA120/AA240 MIXER AMPLIFIER QUICK START EXAMPLES Example 1 — System Paging, BGM, and MOH with Remote Master Level Control This application has the paging microphone into INPUT 1, BGM (CD player) into Input 2, and a Message Repeater or MOH into Input 6. The Zone 2 Output is sent to the telephone system's MOH input port. A level control is placed in another area such as a front desk to adjust the system’s level without having to...
  • Page 14 AA120/AA240 MIXER AMPLIFIER Example 2 - Hotel Room Combining Using Two AA120s/AA240s This example utilizes the combining feature of the Atlas AA120/AA240 mixer amplifiers. The drawing below shows the equipment connections for two hotel ballrooms, separated by a moveable air wall. The hotel needs to be able to have the audio system operate as one large unit (air wall open) or two discreet systems (air wall closed).
  • Page 15 AA120/AA240 MIXER AMPLIFIER Example 3 - Small House of Worship The diagram below shows a typical small House of Worship audio system. This system utilizes four microphones, one for the Pulpit and three on the choir. A Master volume control (Atlas AAVC-10K) is connected to the "VCA"...

  • Page 16: Wiring The Aa120/Aa240

    Speaker Outputs - Use 2 conductor unshielded wire of the appropriate gauge. If you are unsure about this, contact Atlas Sound Tech Support at 1-800-876-3333. Make sure you know how many speakers you need and what tap value you intend to use.

  • Page 17: Security Covers Option

    In order to prevent unauthorized operation of the AA120/AA240, optional security covers are available which take the place of the front panel knobs. After the AA120/AA240 has been installed and is operating as desired, grasp the front panel knobs and pull straight out from the front panel. Replace the knobs with security covers, Atlas part number AAVCC-5 available in quantities of 5.

  • Page 18: Wiring The Aavcc-10K Vca Potentiometer

    To VCA Terminals RACK MOUNT KIT For permanent mounting of the AA120/AA240 into equipment racks, order part number AARM-2RU. If multiple units are being rack mounted, install Atlas 1RU (SVP19-1-052) vented panels between amplifiers in order to aid cooling.

  • Page 19: Block Diagram

    AA120/AA240 MIXER AMPLIFIER AA120/AA240 BLOCK DIAGRAM 1 2 3 4 5 6 7 MUTE SENS CHANNEL 1 INPUT XFMR (OPTIONAL) LINE-TEL PHANTOM TRIM CHANNEL 2 LINE PHANTOM TRIM CHANNEL 3 LINE PHANTOM TRIM CHANNEL 4 LINE PHANTOM TRIM CHANNEL 5...

  • Page 20: Input Transformer Installation

    AA120/AA240 MIXER AMPLIFIER INPUT TRANSFORMER INSTALLATION Optional Input 1 Transformer Installation Contact Atlas Sound at 1-800-876-3333 for price and availability. XFMER BYPASS XFMER IN 1601 JACK MCKAY BOULEVARD ENNIS, TEXAS 75119 U.S.A. • ©2006 ATLAS SOUND LP Printed in U.S.A.
  • Page 21 AA120/AA240 MIXER AMPLIFIER SPECIFICATIONS FOR AA120 and AA240 POWER OUTPUT Max. Average Power @ 50Hz-20kHz with .5% THD (10-80kHz fi lter) 8 Ohm, 1kHz, 120W RMS (AA120) 240W RMS (AA240) TRANSFORMER OUTPUTS AA120 AA120 100V AA120 FREQUENCY RESPONSE 50Hz-20kHz ± 3dB DISTORTION <1% at rated power (1kHz)
  • Page 22 OWNER'S MANUAL AA120/AA240 MIXER AMPLIFIER NOTES: 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...
  • Page 23 OWNER'S MANUAL AA120/AA240 MIXER AMPLIFIER NOTES: 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...

  • Page 24: Specifi Cations

    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Atlas Sound does not assume, or does it authorize any other person to assume or extend on its behalf, any other warranty, obligation, or liability. This warranty gives you specifi c legal rights and you may have other rights which vary from state to state.

This manual is also suitable for:

Aa240

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