Altec Lansing 9441A User Manual
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Table of Contents
1 ELECTRICAL......................................................................... ........................................................... ‘ 1
1.1 120 V ac, 50/60 Hz Power Connection.«;........................................................................................... 1
1.2 220/240 V ac, 50/60 Hz Power Connections....................................................................................... 1
2 INSTALLATION.................................................................................................................................... 1
2.1 Eack Mounting .................................................................................................................................. 1
2.2 Ventilation ............................................................................................................................ .
1
3 SIGNAL CONNECTIONS...................................................................................................................... 2
3.1 Input Connections ............................................................................................................................. 2
3.2 Line Output Connections.................................................................................................................... 2
3.3 Output Connections........................................................................................................................... 2
3.4 Output Cable Selection....................................................................................................................... 2
3.4.1 Calculating Power Los.ses with 8 ohm Loads.................................................................................. 2
3.4.2 Calculating Power Losses with 4 ohm Loads................................................................................. 2
3.5 Damping Factor........................................................................................................ .................. .
2
3.5.1 Calculating the Maximum Length of Cable for a Specified Damping Factor............................... .
3
3.C Speaker Protection Fuse Selection ...................................................................................................... 5
3.7 Compros.sion Driver Protection Capacitors ........................................................................................... 5
Operating and Service Instructions for the Altec Lansing 9441A Power Amplifier
4 OCTAL ACCESSORY SOCKETS
5 PROTECTION SYSTEMS .............................................................................................................. . .
5
5.1 Load Protection Circuitry..................................................................................................................... 5
5.2 Amplifier Protection Circuitry ............................................................................................................... 5
5.3 Protect Indicator........................................................................................................................ . .
6
G OPERATION......................................................................................................................................... 6
G.l Dual Mode of Operation............................................................................................................... . .
6
G.2 Bridge Mode of Operation ................................................................................................................... 6
7 IN CASE OF PROBLEMS
8 SPECIFICATION...................
6
7
9 SERVICE INFORMATION.................................................................................................................. 10
9.1 Equipment Needed......................................................................................................................... 11
9.2 Adjusting SVRl and SVR2, the BIAS Trimpots
9.3 Ordering Replacement Parts ..............................
9.4 Factory Service ................................................
9.5 Technical Assistance .........................................
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ALTEC JJCStSING^ CORPORATION
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Mar-k W Company