Output Wiring, Output Connector Wiring

10	Chapter 1: Crown Ampliﬁers In-Depth

Figure 1.5

Balanced RFI Filters

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 connectors as shown in Figure 1.6.

If the ampliﬁ er is set for Bridge-Mono (if equipped), con- nect a mono load across the red binding posts of each channel as shown in Figure 1.7. Do NOT use the black binding posts when the amp is set for Bridge Output.

Notice that the Channel 1 red binding post is positive

(+) and the Channel 2 red binding post is negative (–).

If amp is set for Parallel-Mono (if equipped), connect a 14-gauge or larger jumper between the Channel 1 and Channel 2 Positive terminals, then connect a mono load to the Channel 1 binding posts as shown in Figure 1.8. Do NOT use the Channel 2 binding posts when the amp is set for Parallel Output. Caution: Never short or

parallel the output channels of an ampliﬁer to itself

or to any other ampliﬁer.

Balanced vs. Unbalanced

A balanced audio circuit will have both positive (+) and negative (–) legs of the circuit that are isolated from the ground circuit. These balanced legs exhibit identical impedance character- istics with respect to ground, and may also carry the audio signal at the same level, but with opposite polarities. This results in a line that offers excellent rejection of unwanted noise.

On the other hand, an unbalanced circuit usually holds one leg at ground potential, while the second leg is “hot.” Unbalanced line is less expensive, but is much more susceptible to noise, and is not normally used in professional applications. For the cleanest signal, with less hum and buzz, a balanced line is always recommended. It is espe- cially helpful if you have a long cable run (over 10 feet (3 m)), since noise is easily introduced into long, unbalanced lines.

Figure 1.6

5-Way Binding Post Wiring for Stereo

Figure 1.7

5-Way Binding Post Wiring for Bridge-Mono

Figure 1.8

5-Way Binding Post Wiring for Parallel- Mono

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.

Crown Audio 133472-1A manual Output Wiring, Output Connector Wiring, Balanced vs. Unbalanced

Models: 133472-1A