Crown Audio 133472-1A manual Amplifier Load Impedance, Parallel Speaker Impedances

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Chapter 1: Crown Amplifiers In-Depth

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Figure 1.18

Connector Assembly: Bushing onto Connector Housing Assembly

Figure 1.19

Connecting the Speakon plug to the mating connector

6. Slide the bushing along the cable and screw onto the end of the connector combination as shown in Figure 1.18. Note that the bushing features a special lock- ing construction which will prevent disassembly of the NL4FC con- nector once this cap is tightened into place. Before tightening, you may want to test the connector in a live system to make sure it has been assembled properly.

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- lock on the housing will snap into the locked position when the connector is properly seated.

Figure 1.20

Series Speaker Impedances

Figure 1.21

Parallel Speaker Impedances

1.3.2 Amplifier Load Impedance

A major consideration when matching amplifi ers with speakers is the resulting impedance presented to the amplifi er when speakers are connected to the output. The impedance of the load, in part, determines how much power the amplifi er will produce. Also, too low of impedance can cause the amplifi er to

overheat.

Impedance is much like resis- tance, except impedance changes with frequency. Imped- ance and resistance are both measured in ohms. To under- stand the effect of impedance in an electrical circuit, consider the following analogy: a wire is much like a water pipe. Elec- trical current is like the water

fl owing through the pipe. Imped- ance’s role is that of the valve. The valve resists or impedes (hence the terms) the fl ow of water through the pipe. If the valve is opened (less imped- ance), water fl ows freely. As the valve is turned toward the closed position (more imped- ance), the fl ow of water slows. As the amplifi er drives lower impedances, it produces more current, thus more power.

Amplifier Application Guide

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Contents Amplifier Application Guide Crown Technical Support Group Important Safety InstructionsTable of Contents Introduction Rack Cooling ChapterThis Chapter Fan-Assisted ModelsConvection-Only Models Input Wiring System WiringInput Connector Wiring Balanced, Grounded SourceUnbalanced, Floating Source Twin-Lead Shielded Cable Unbalanced, Grounded Source Twin-Lead Shielded CableRadio Frequencies RF Solving Input ProblemsHum and Buzz Output Connector Wiring Output WiringBalanced vs. Unbalanced Way Binding PostBarrier Block Output Wiring TipsNeutrik Speakon Connector Assembly Insert into Connector Housing Amplifier Load Impedance Connecting the Speakon plug to the mating connectorParallel Speaker Impedances Parallel Impedances Loudspeaker Protection Determining Appropriate Speaker Wire GaugeHigh-Frequency Oscillations Solving Output ProblemsLoudspeaker Fuse Nomograph Sub-Sonic Currents Distributed Speaker SystemsWhat is Constant Voltage? Using Low-ImpedanceMulti-way Systems With Expansion Modules Active vs. Passive Crossover NetworksCrown Amplifiers In-Depth Fault Status External Circuit Design Setting Fault MonitoringRJ Jack Wiring and Pin Assignments Optimal System Headrom System GainAmplifier Level System LevelsTroubleshooting No Power No PowerNo Sound No SoundAmp Overheating Bad SoundBCA EMI Equalization EQ FaultFader FrequencyOdep IOCPIP2 PIPTHX Audio Systems Technology, Level AppendixHandbook for Sound Engineers The New Audio Cyclope- dia HOW to Obtain Warranty Service Items Excluded from this Crown WarrantyWhat the Warrantor will do Disclaimer of Consequential & Incidental DamagesFull Warranty Three Year

133472-1A specifications

Crown Audio 133472-1A is a sophisticated and highly regarded power amplifier designed for professional audio applications. Known for its reliability and high performance, the 133472-1A is favored by sound engineers, musicians, and event organizers who seek exceptional audio clarity and robust amplification.

One of the standout features of the Crown Audio 133472-1A is its impressive power output. This amplifier is capable of delivering substantial wattage, ensuring that it can effortlessly drive a variety of loudspeaker systems without distortion, even at high volumes. This makes it particularly suitable for large venues, concerts, and public gatherings where sound coverage is critical.

The 133472-1A utilizes advanced technologies to enhance its performance. For instance, it incorporates a patented output stage design that minimizes distortion, allowing for a cleaner and more accurate sound reproduction. This is especially important in professional audio environments where audio fidelity is paramount. Additionally, the amplifier features sophisticated thermal management systems that prevent overheating, ensuring reliable operation during extended use.

Another key characteristic of the Crown 133472-1A is its versatility. It is engineered to work seamlessly with a range of audio sources, making it an ideal choice for various applications, including live performances, installations, and broadcasting. Its multiple input options, including XLR and TRS connectors, allow for flexible connectivity options, accommodating various audio setups.

Durability is also a significant aspect of the Crown Audio 133472-1A. Constructed with high-quality materials and robust components, this amplifier is built to withstand the rigors of professional use. Its rugged chassis design provides added protection, making it suitable for both touring and fixed installations.

Furthermore, the Crown 133472-1A offers user-friendly features such as intuitive controls and indicators, allowing users to monitor performance easily. This includes LED status indicators that provide real-time feedback on operation, making it simple to troubleshoot any issues.

In summary, the Crown Audio 133472-1A is a powerhouse amplifier that combines high output, advanced technologies, and durable construction. Its versatility makes it a preferred choice for professionals seeking reliable and superior audio performance in live and installed environments. Whether for music events, speeches, or any high-stakes audio requirements, the 133472-1A delivers the quality and performance essential for exceptional sound.
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