Audio international PA-7500A Installation Manual Download | Manualshive

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7300 Industry Drive, North Little Rock, AR 72117

Phone: 501-955-2929 Fax: 501-955-2988

www.audiointl.com

Installation Manual

PA-7500A

Cabin Audio Amplifier

Document # 540056A

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Summary of Contents for PA-7500A

Page 1: ...7300 Industry Drive North Little Rock AR 72117 Phone 501 955 2929 Fax 501 955 2988 www audiointl com Installation Manual PA 7500A Cabin Audio Amplifier Document 540056A ...

Page 2: ... Subject Manual Revision Revision Date Table of Illustrations Illustration Description Page 2 2 Block Diagram Typical Application 5 6 0 Reference Drawings 11 PROPRIETARY INFORMATION NOTICE Despite any other copyright notice this document and information disclosed herein contains confidential proprietary designs owned by Audio International Inc Neither this document nor the data contained herein sh...

Page 3: ...duction 4 2 2 Block Diagram Typical Application 4 3 0 Installation 5 3 1 Prior to Installation 5 3 2 Unpacking and Inspection 5 3 3 Cautions Warnings 6 3 4 Wiring Requirements 6 3 5 Physical Characteristics 7 3 6 Electrical Characteristics 7 3 7 Mating Connector Information 8 3 8 Pinout Assignments and Descriptions 8 3 9 Post Installation Test 9 4 0 Troubleshooting 10 4 1 General Troubleshooting P...

Page 4: ...ttle heat yet produces dual output high powered high fidelity sound The unit has four 4 channel outputs 75 watts peak output per channel A 135 Hz crossover is incorporated within the unit Provisions are included for PA audio override input The unit is designed to interface with AI s proprietary RS 485 serial data bus allowing the entertainment switch panels to communicate with the audio amplifier ...

Page 5: ...the entertainment system and monaural audio for page chime Each amplifier is designed to interface with AI s proprietary RS 485 serial data bus allowing all entertainment switch panels to communicate with the audio amplifier The unit has the capability of producing four 4 channels 75 watts RMS peak output Output impedance 4 ohms per channel input impedance 10 k briefer 1 VRMS nominal Emergency inp...

Page 6: ... mounting hole diameters and configuration 3 1 4 The unit must be located as close to source equipment as possible Long low level runs may introduce noise into the audio signal 3 2 Unpacking and Inspection Carefully open the packaging and remove the unit Verify that all components have been included in the package per the packing list Inspect the unit for damage Retain the packing materials and pa...

Page 7: ...arefully studied and planned before attempting installation of the equipment Allow adequate space for installation of cable and connectors Avoid sharp bends and placing cables near aircraft control cables Maintain a MINIMUM clearance of three 3 inches from any control cable If wiring is run parallel to combustible fluid or oxygen lines maintain a separation of six 6 inches between the lines 3 4 2 ...

Page 8: ...l data bus specification is available upon request 3 5 Physical Characteristics 3 5 1 Refer to Section 5 0 for unit dimensions 3 5 2 Refer to Section 6 0 for attachment points 3 5 3 When mounting the unit allow sufficient space for mating connectors 3 6 Electrical Characteristics 3 6 1 Refer to Section 5 0 for electrical specifications 3 6 2 P1 is a 25 pin connector The signals interfaced through ...

Page 9: ...7 Left In 8 28 VDC 8 Right In 9 Woofer 2 Low 9 Right In 10 Right Speaker 1 Low 10 Data Bus Shield 11 Right Speaker 2 Low 11 28 VDC Adj 12 Right Speaker 1 High 12 Data Bus Ground Adj 13 Right Speaker 2 High 13 Data Bus SER Adj 14 Woofer 1 High 14 Data Bus SER Adj 15 Emergency Bus 28 VDC In 15 No Connection 16 28 VDC 16 No Connection 17 28 VDC 17 No Connection 18 Ground 18 No Connection 19 Ground 19...

Page 10: ...microphones are tested Verify that the briefer audio can be heard through the speakers 3 9 3 Verify that the selected material may be heard through the headphone and or speaker system Activate the PA key Verify PA overrides the headphone and or speaker system 3 9 4 Remove power from the amplifier and verify that the 28 VDC emergency power is supplied to the amplifier Verify that the subwoofers are...

Page 11: ... 2 Troubleshooting Chart Problem Possible Cause Solution No sound Unit improperly installed Verify 28 VDC power and audio input is present No audio material in source unit Insert audio material in source unit Poor audio quality Audio controls are not adjusted properly Contact AI 5 0 Specifications Physical Specifications Housing Aluminum Dimensions l x w x h 9 3 x 4 9 x 2 0 23 62cm x 12 45cm x 5 0...

Page 12: ...al Inc PA 7500A Installation Document 540056A Rev A 7 2000 Page 11 of 11 6 0 Reference Drawings The following diagrams show the unit dimensions and connector locations for the PA 7500A All dimensions are shown in inches ...

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