Page 2 - Crown Technical Support Group; Amplifi er Application Guide
2 Amplifi er Application Guide The information furnished in this manual does not include all of the details of design, production, or variations of the equipment. Nor does it cover every possible situation which may arise during installa-tion, operation or maintenance. If you need special assistance...
Page 3 - Table of Contents
3 Amplifi er Application Guide Table of Contents Introduction .................................................................................................. 4Chapter 1: Crown Amplifi ers In-Depth ....................................................... 5 1.1 Rack Cooling ............................
Page 4 - Introduction; Crown
4 Amplifi er Application Guide Introduction This application guide provides useful information designed to help you best use your new Crown ® amplifi er. It is designed to complement your amplifi er’s Operation Manual , which describes the specifi c features and specifi cations of your amplifi er. H...
Page 5 - In This Chapter; • Rack Cooling; Chapter; Crown Amplifi ers In-Depth
Chapter 1: Crown Amplifi ers In-Depth 5 Amplifi er Application Guide In This Chapter • Rack Cooling • System Wiring • Amplifi er Load Impedance • Multi-Way Systems • Distributed Speaker Systems • Setting System Gain Structure T his chapter provides information to help you get optimum performance fro...
Page 6 - Operation; Overheating
6 Chapter 1: Crown Amplifi ers In-Depth Amplifi er Application Guide sides) is not blocked or covered by cables. Also, if your Crown amp has foam fi lters, they can be cleaned with mild dish detergent and water when needed. The side walls of the rack should be at least 2 inches (5 cm) away from the ...
Page 7 - Input Connector Wiring; For use with components equipped with two-wire
Chapter 1: Crown Amplifi ers In-Depth 7 Amplifi er Application Guide 1.2 System Wiring The information in this section covers making input and output wiring connec-tions, as well as troubleshooting problems relating to system wiring. 1.2.1 Input Wiring Input Connector Wiring Refer to the following d...
Page 8 - Twin-Lead Shielded Cable; Conductor Coax or Twisted-Pair Cable
8 Chapter 1: Crown Amplifi ers In-Depth Amplifi er Application Guide Unbalanced, Grounded Source, Twin-Lead Shielded Cable For use with components equipped with three-wire grounded AC line cord or other ground connection. Unbalanced, Floating Source, Twin-Lead Shielded Cable For use with components ...
Page 9 - Input Wiring Tips; Unbalanced RFI Filters
Chapter 1: Crown Amplifi ers In-Depth 9 Amplifi er Application Guide 1.2.2 Solving Input Problems Infrasonic (Subaudible) Frequencies Sometimes large infrasonic (sub-audible) frequencies are present in the input signal. These can damage loudspeakers by overloading or overheating them. To attenuate s...
Page 10 - Balanced RFI Filters; Balanced vs. Unbalanced
10 Chapter 1: Crown Amplifi ers In-Depth Amplifi er Application Guide 1.3 Output Wiring 1.3.1 Output Connector Wiring 5-Way Binding Post If the amplifi er is set for Stereo (Dual), connect the positive (+) and negative (–) leads of each loudspeaker to the appropri- ate Channel 1 and Channel 2 output...
Page 11 - Barrier Block; Output Wiring Tips; Neutrik
Chapter 1: Crown Amplifi ers In-Depth 11 Amplifi er Application Guide Barrier Block If the amplifi er is set for Stereo (Dual), connect the positive (+) and negative (–) leads of each loudspeaker to the appropriate Channel 1 and Channel 2 output connectors as shown in Figure 1.9. If the amplifi er i...
Page 12 - Never short or parallel the output channels of; Stereo Output Wiring
12 Chapter 1: Crown Amplifi ers In-Depth Amplifi er Application Guide 3b. If the Mode switch is in the “Stereo” posi-tion (for stereo con-fi guration), connect the positive (+) and negative (–) leads of each wire to the appropriate Chan-nel 1 and Channel 2 connectors as shown in Figure 1.14. You may...
Page 13 - Slide the bushing along the cable
Chapter 1: Crown Amplifi ers In-Depth 13 Amplifi er Application Guide To connect the Speakon plug into the mating connector on the speaker, line up the notches between the insert and the mating connector, then insert the plug and turn one quarter-turn clockwise as shown in Figure 1.19. The thumb-loc...
Page 15 - Determining Appropriate Speaker Wire Gauge; PIPs for Speaker Protection
Chapter 1: Crown Amplifi ers In-Depth 15 Amplifi er Application Guide 1.3.3 Determining Appropriate Speaker Wire Gauge You should choose loudspeaker cables with suffi cient gauge (thickness) for the length being used. The resistance introduced by inadequate loud-speaker cables will reduce both the o...
Page 16 - High-Frequency Oscillations; Avoid using shielded loudspeaker cable.
16 Chapter 1: Crown Amplifi ers In-Depth Amplifi er Application Guide Two different types of fuses are required for thermal protection and voltage protection. Slow-blow fuses are usually selected to protect loudspeakers from thermal damage because they are similar to loudspeakers in the way they res...
Page 17 - tion Manual; Sub-Sonic Currents; Another way to prevent the amplifi er
Chapter 1: Crown Amplifi ers In-Depth 17 Amplifi er Application Guide 4. Never connect the amplifi er’s input and output grounds together. 5. Never tie the outputs of multiple amplifi ers together. 6. Keep loudspeaker cables well separated from input cables. 7. Install a low-pass fi lter on each inp...
Page 18 - What is Constant Voltage?; after the amplifi er in the signal chain,
18 Chapter 1: Crown Amplifi ers In-Depth Amplifi er Application Guide level to drive the speaker, and are connected across the wires (see Figure 1.26). The combination of transformer and speaker line presents a much higher impedance to the amplifi er than would the speaker itself, making it possible...
Page 20 - sive systems if transducers change impedance or vaporize (blow up).
20 Chapter 1: Crown Amplifi ers In-Depth Amplifi er Application Guide Figure 1.29 Typical Three-Amp, Bridge-Mono, Three-Way Hookup Figure 1.30 Fault Status External Circuit Design When you use an active crossover to split the power drive to the loudspeaker components, you gain a wide range of advant...
Page 21 - Fault Monitoring
Chapter 1: Crown Amplifi ers In-Depth 21 Amplifi er Application Guide 1.5 Fault Monitoring The Fault (RJ-11) jack, which looks like a telephone plug, is located on the back of your amplifi er (if equipped). It gives you an easy way to remotely monitor the amplifi er’s fault status. To set up a circu...
Page 23 - Chapter 2: Troubleshooting; • Troubleshooting Flowcharts; Troubleshooting; Flowchart Key
Chapter 2: Troubleshooting 23 Amplifi er Application Guide In This Chapter • Troubleshooting Flowcharts T his section provides fl owcharts to assist you in troubleshooting problems with your amplifi er. In some situations the problem may not be with the amplifi er, but rather may be caused by a syst...
Page 27 - • Glossary of Terms; Glossary of Terms
Chapter 3: Glossary of Terms 27 English Amplifi er Application Guide In This Chapter • Glossary of Terms T his section provides a handy glossary of terms used in the discussion of profes-sional audio amplifi ers. Some terms are unique to Crown amplifi ers. Most of the terms provided do not directly ...
Page 28 - Chapter 3: Glossary of Terms
28 Chapter 3: Glossary of Terms Amplifi er Application Guide Bus In audio terms, a Bus is a point in a circuit where many sig-nals are brought together. For example: Most electronic items have a Ground Bus where all of a device’s individual ground paths are tied together. In mixers, we have Mix Buss...
Page 33 - Appendix; Suggested Reading
Appendix: Suggested Reading 33 English Amplifi er Application Guide T his Appendix provides a a list of suggested publications for further reading about professional audio. Appendix Suggested Reading Audio Systems Design and Installation by Philip Giddings, Phillip GiddingsPaperback - 574 pages (199...
Page 34 - Appendix: Suggested Reading; NORTH AMERICA; SUMMARY OF WARRANTY; THREE YEAR
34 Appendix: Suggested Reading Amplifi er Application Guide NORTH AMERICA SUMMARY OF WARRANTY The Crown Audio Division of Crown International, Inc., 1718 West Mishawaka Road, Elkhart, Indiana 46517-4095 U.S.A. warrants to you, the ORIGINAL PURCHASER and ANY SUBSE-QUENT OWNER of each NEW Crown produc...
Page 35 - WORLDWIDE
Appendix: Suggested Reading 35 Amplifi er Application Guide WORLDWIDE SUMMARY OF WARRANTY The Crown Audio Division of Crown International, Inc., 1718 West Mishawaka Road, Elkhart, Indiana 46517-4095 U.S.A. warrants to you, the ORIGINAL PURCHASER and ANY SUBSE-QUENT OWNER of each NEW Crown1 product, ...
