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 AtlasSound.com 

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Owner’s Manual

AA400PHD

400W Mixer Amplifier

1601 Jack McKay Blvd. • Ennis, Texas 75119  U.S.A.

Telephone: 800.876.3333 • Fax: 800.765.3435

Table of Contents

 

Important Safety Instructions .................................................................................................................. 3

 Introduction ............................................................................................................................................  5

 

Key Features ...........................................................................................................................................  5

 Applications ............................................................................................................................................  5

 

Front Panel Description ........................................................................................................................... 6

 

Rear Panel Description ............................................................................................................................ 7

 

PHD Diagnostic System Test ................................................................................................................. 12

 

Common Amplifier Failure Conditions................................................................................................... 12

 

Trouble Shooting the Fault LED ............................................................................................................. 13

 

How to Calculate Load Impedance ....................................................................................................... 13

 

Remote Level Control ............................................................................................................................ 15

 

Remote Input Select (RIS) ..................................................................................................................... 16

 

Wiring the AA400PHD ...........................................................................................................................17

 

Level Control Security Cover Option  .....................................................................................................17

 

Block Diagram ....................................................................................................................................... 18

 Specifications ........................................................................................................................................ 19

 Warranty ................................................................................................................................................ 24

Summary of Contents for AA400PHD

Page 1: ...om Specifications are subject to change without notice Owner s Manual AA400PHD 400W Mixer Amplifier 1601 Jack McKay Blvd Ennis Texas 75119 U S A Telephone 800 876 3333 Fax 800 765 3435 AA400PHD 400W M...

Page 2: ...3 Introduction 5 Key Features 5 Applications 5 Front Panel Description 6 Rear Panel Description 7 PHD Diagnostic System Test 12 Common Amplifier Failure Conditions 12 Trouble Shooting the Fault LED 13...

Page 3: ...r plug is damaged liquid has been spilled or objects have fallen into the device the device has been exposed to rain or moisture does not operate normally or has been dropped 15 WARNING To reduce the...

Page 4: ...ower cord in close proximity to heaters and do not place heavy objects on the power cord including the product itself doing so may result in fire or electrical shock Ensure that the safety ground term...

Page 5: ...years of service and flexibility in today s background music and paging applications Key Features 400W Into 25V 70 7V and 4 Loads Automated Diagnostic System Test Push Here Diagnostic for 70V Distrib...

Page 6: ...tem using the PHD feature for proper wiring and amplifier loading this LED will illuminate Yellow if a fault is sensed in the audio speaker system See Using the PHD Load Impedance Testing System Note...

Page 7: ...oost treble frequencies by 6dB at 10kHz Rotating counter clockwise from the 12 00 position will decrease cut treble frequencies by 6dB at 10kHz 3 Input 1 Balanced Microphone or Line level signals conn...

Page 8: ...hen Input 1 is set to Mic mode and the switch is in the ON position Note Only use this feature if you are using condenser microphones otherwise leave in the OFF position DP SW 2 Mute Receive Input 1 W...

Page 9: ...section has a 3 position Phoenix connector for Mic or Line input signals and a 3 5mm stereo jack that is summed The level to the amplifier mix is controlled by Input 4 level located on the front pane...

Page 10: ...is OFF or assigned to the feature stated when a switch is in the down position the function is ON or assigned to the feature stated Switch B DP SW 1 Mute Receive Input 6 When ON Input 6 signal will b...

Page 11: ...el Controls and PRE the Master Level on the front panel Set the system s maximum levels using the amplifier input level controls and then use the remote potentiometer as an attenuator from the maximum...

Page 12: ...est way to see if your speaker system is wired correctly for the amplifier B Run the PHD Self Diagnostic test Running a Self DiagnosticTest using the PHD Feature Step 1 Install the AAPHD Mixer amplifi...

Page 13: ...tting to make sure it is not set to a 4 8 or 16 ohm setting If one speaker is set to one of these settings it will cause a fault condition A simple and quick way to test this besides visually looking...

Page 14: ...The LED should not steadily illuminate if a proper load is applied Note An occasional LED flash is okay during standard operation When LED is ON audible distortion may be heard at the speakers E After...

Page 15: ...via the Remote Level control port You can control Input 2 or Inputs 4 5 and 6 The AAPHD series remote level design is based on 10VDC return VCA type topology Connections to a 10K pot require three co...

Page 16: ...inputs without running audio signal from the amplifier This is ideal because the result is clean audio with no chance of picking up interference It is intended to be used with the optional wall contro...

Page 17: ...iers optional security covers are available which take the place of the front panel knobs After the amp has been installed and is operating as desired grasp the front panel knobs and pull straight out...

Page 18: ...AtlasSound com 18 Owner s Manual AA400PHD 400W Mixer Amplifier 1601 Jack McKay Blvd Ennis Texas 75119 U S A Telephone 800 876 3333 Fax 800 765 3435 Block Diagram...

Page 19: ...s 1 6 Rear Panel Inputs Mic Line Balanced Qty 4 3 Position PHX Type 3 5mm Pitch Auxiliary Unbalanced Qty 2 RCA Auxiliary Unbalanced Qty 1 3 5mm Amp In Unbalanced RCA 600 Tone Controls Bass 6dB 100Hz T...

Page 20: ...Qty 6 Frequency Response 50Hz 15kHz 3dB Thd N 0 5 Or Less At 1kHz Rated Output Input Sensitivity Impedance Input 1 2 3 4 Mic Mode 5mv No Trim 1200 Input 1 2 3 4 Line Mode 316mV 10dBV 1200 Input 4 3 5...

Page 21: ...AtlasSound com Specifications are subject to change without notice Owner s Manual AA400PHD 400W Mixer Amplifier 1601 Jack McKay Blvd Ennis Texas 75119 U S A Telephone 800 876 3333 Fax 800 765 3435 No...

Page 22: ...AtlasSound com 22 Owner s Manual AA400PHD 400W Mixer Amplifier 1601 Jack McKay Blvd Ennis Texas 75119 U S A Telephone 800 876 3333 Fax 800 765 3435 Notes...

Page 23: ...AtlasSound com Specifications are subject to change without notice Owner s Manual AA400PHD 400W Mixer Amplifier 1601 Jack McKay Blvd Ennis Texas 75119 U S A Telephone 800 876 3333 Fax 800 765 3435 No...

Page 24: ...eturns must comply with our returns policy set forth below When products returned to Atlas Sound do not qualify for repair or replacement under our warranty repairs may be performed at prevailing cost...

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