Altec Lansing 6125A - Manuals

Page 2 - Operating Manual 6125A and 4200A Multi-Channel Power Amplifier; Table Of Contents

2 Operating Manual 6125A and 4200A Multi-Channel Power Amplifier Table Of Contents 1 I N T R O D U C T I O N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 UNPACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

Page 3 - CAUTION; The lightning flash with arrowhead symbol,

3 Operating Manual 6125A and 4200A Multi-Channel Power Amplifier CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN The lightning flash with arrowhead symbol, within an equalateral triangle, is intended to alertthe user to the presence of uninsulated "danger-ous voltage" within the product's enclosu...

Page 7 - REAR PANEL FEATURES; Input Ground Switch; This switch separates the input signal ground from; Multi-Channel Operation; The 6125A is essentially three stereo amplifiers; 0Hz Low Cut Switch; Each pair of channels has a 50Hz second order

7 Operating Manual 6125A and 4200A Multi-Channel Power Amplifier 7. REAR PANEL FEATURES 7.1 Input Connectors The 6125A and 4200A inputs use balanced two piece "Euroblock" style connectors. It is recommendedthat balanced input connections be used whenever possibleto take full advantage of the...

Page 8 - Input Level Controls

8 Operating Manual 6125A and 4200A Multi-Channel Power Amplifier 7.5 Input Level Controls Input Level Controls attenuate input signal from 0dB down to - ∞ . For best performance, Altec recommends that the level controls be operated at full level (0 dB at-tenuation). In STEREO mode, each level contro...

Page 9 - AC Inlet; If the mains voltage is 110-125VAC, the required; SELF-PROTECTION FEATURES

9 Operating Manual 6125A and 4200A Multi-Channel Power Amplifier 7.9 AC Inlet The 6125A and 4200A amplifiers can be config- ured by the customer for operation at either 115VAC or230VAC mains. Switching from one to the other simplyrequires the following steps: 1.) Unplug the amplifier from the wall a...

Page 10 - In all cases, the amplifier will restart the signal; Specific conditions resulting in a fault are as follows:; Power supply undervoltage - less than about; TYPICAL APPLICATIONS

10 Operating Manual 6125A and 4200A Multi-Channel Power Amplifier In all cases, the amplifier will restart the signal processing module after a short delay and will reconnectthe speakers after several seconds if no further fault con-ditions exist. This allows the servo circuitry to bring anyresidual...

Page 11 - Six Channel Setup; Dual Mono Setup

11 Operating Manual 6125A and 4200A Multi-Channel Power Amplifier 9.1 Six Channel Setup 9.2 Dual Mono Setup Outputs ! " # $ ! " # $ Input Section:Up to Six Different InputsStereo/Mono Switches - OutDual Bridge Switches - OutLevels Controls - Used Per Input Channel Speaker Outputs - Up To Six...

Page 12 - Bridged Mono Setup; Typical PA Setup

12 Operating Manual 6125A and 4200A Multi-Channel Power Amplifier 9.3 Bridged Mono Setup 9.4 Typical PA Setup Outputs ! # Input Section:Up to Three Different InputsStereo/Mono Switches - InDual/Bridge Switches - InLevels Controls - Only Channels 1, 3, or 5 Used Minimum Speaker Load Per Bridged Chann...

Page 13 - DESIGN THEORY; TROUBLESHOOTING TIPS; ) Power LED lit but no Signal LED activity

13 Operating Manual 6125A and 4200A Multi-Channel Power Amplifier 10. DESIGN THEORY The 6125A and 4200A amplifiers are based on stereo driver modules that use digital processing to gener-ate a spread-spectrum switching pattern between about200KHz and 1.5MHz, depending on input signal ampli-tude and ...

Page 14 - Distorted Sound

14 Operating Manual 6125A and 4200A Multi-Channel Power Amplifier 11.2 Distorted Sound 1.) Clip LED is flashing regularly Amplifier is being overdriven. Turn down the in- put level control, or reduce the output level from the sig-nal source. 2.) Clip LED is not flashing at all Amplifier input signal...

Page 15 - SPECIFICATIONS; Full Power Input Sensitivity:; WARRANTY INFORMATION

15 Operating Manual 6125A and 4200A Multi-Channel Power Amplifier 13. SPECIFICATIONS *Power Output(Maximum Average Power, 0.1% THD, 1KHz) Rated Per Channel, Two Channels Driven 6125A 4200A 4 ohm: 250 Watts RMS 400 Watts RMS 8 ohm: 150 Watts RMS 275 Watts RMS Mono Bridged (1 Channel)8 ohm: 500 Watts ...

Page 16 - Printed in USA

Printed in USA 6125A-0 0503 A l t e c L a n s i n g P r A l t e c L a n s i n g P r A l t e c L a n s i n g P r A l t e c L a n s i n g P r A l t e c L a n s i n g P ro f e s s i o n a l o f e s s i o n a l o f e s s i o n a l o f e s s i o n a l o f e s s i o n a l 1000 W. Wilshire Blvd. Suite 362 ...