Bca | Crown Audio 133472-1A specification

Chapter 3: Glossary of Terms

Chapter 3 Glossary of Terms

In This Chapter

• Glossary of Terms

This 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 relate to ampliﬁ ers, but as ampliﬁ ers are but one piece of a larger audio system, are often used when discussing amp usage.

English

Amperage

A measure of electrical current ﬂ ow, also called “amps” for short. It literally equates to the number of electrons in a conductor ﬂ owing past a certain point in a given amount of time. Ohms law deﬁ nes current (I) as voltage (V) divided by resistance (R) with the following expression: I=V/R.

Ampliﬁer (Amp)

A device that increases signal. Many types of ampliﬁ ers are used in audio systems. Ampliﬁ ers typically increase voltage, current, or both.

Ampliﬁer Class

Audio power ampliﬁ ers are classiﬁ ed primarily by the design of the output stage. Classiﬁ cation is based on the amount of time the output devices are made to operate during each cycle of swing. Ampliﬁ ers are also deﬁ ned in terms of output bias current (the amount of current ﬂ owing in the output devices with no signal present). Common ampliﬁ er classes used in professional audio ampliﬁ ers include AB, AB+B, D, G and H.

Attenuation

A decrease in the level of a signal is referred to as attenua- tion. In some cases this is unintentional, as in the attenuation caused by using wire for signal transmission. Attenuators (circuits which attenuate a signal) may also be used to lower the level of a signal in an audio system to prevent overload and distortion.

Balanced Line

A cable with two conductors surrounded by a shield, in which each conductor is at equal impedance to ground. With respect to ground, the conductors are at equal potential but opposite polarity; the signal ﬂ ows through both conductors.

Band-Pass Filter

In a crossover, a ﬁ lter that passes a band or range of frequen- cies but sharply attenuates or rejects frequencies outside the band.

Barrier Block/Barrier Strip

A series of connections, usually screw terminals, arranged in a line to permanently connect multiple audio lines to such devices as recording equipment, mixers, or outboard gear. Also called terminal strip.

BCA®

BCA (Balanced Current Ampliﬁ er) is Crown’s patented PWM (Pulse-Width Modulation) ampliﬁ er output stage topology. Also referred to as “class-I,” Crown’s BCA “switching” technol- ogy provides for high output, exceptional reliability and nearly twice the efﬁ ciency of typical ampliﬁ er designs. To learn more about BCA, download and read the BCA white paper at www. crownaudio.com.

Binding Post (5-Way, Banana)

A type of electrical terminal, a binding post is most commonly found as the output connector on a power ampliﬁ er, or as the connectors on a speaker cabinet. A binding post can accept banana plugs, spade lugs, bare wire and others. Generally, binding posts are color coded, with the black connection going to ground, and the red connecting to hot.

Bridge-Mono

An operating mode of an ampliﬁ er that allows a single input to feed two combined output channels in order to provide a single output with twice the voltage of an individual channel in Stereo or Dual mode.

Ampliﬁer Application Guide

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.