quickly. In all circumstances, an investigation should be undertaken to determine the cause of the thermal shut down. If the amplifier is not severely overloaded or its outputs shorted, and air flow is normal in and out of the amplifier, steps should be taken to provide a cooler environment for the amplifier, along with any other amplifiers in the same equipment cabinet. As a general rule, the cooler electronic equipment is operated, the longer its useful service life.

BRIDGE MODE

BRIDGE MODE is not recommended in installations where the amplifier is located at a distance from the speaker system. The CA-A540 and CA-A800 amplifiers are equipped with switching to

enable BRIDGE operation, should the installation require it. BRIDGE MODE operation is accomplished by placing the mode switch in the ÒBRIDGEÓ position, connecting the load across Ò+Ó terminal of Channel ÒAÓ for the positive and the Ò+Ó terminal of Channel ÒBÓ for the negative. Use Channel ÒAÓ as the input channel. The Channel ÒBÓ input is defeated in this mode. In BRIDGE MODE, the minimum recommended load impedance is 8 ohms.

SPS OPERATION

PeaveyÕs patented SPS compression system maximizes the performance of the amplifier by preventing the power amplifier from clipping under maximum power delivery conditions. This compression system is activated by a very unique circuit that senses signal conditions which might overload the amplifier, reducing the amp gain when clipping is imminent. The threshold of compression is near the clip point, so no active compression occurs within the normal dynamic range of the audio signal. By preventing clipping, this feature reduces the possibility of system distortion and possible damage to the loudspeaker. In normal theater applications, it is recommended that the SPS compression feature is placed in ENABLE.

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Peavey CA-A800B, CA-A540B manual Bridge Mode, SPS Operation
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CA-A540B, CA-A800B specifications

The Peavey CA-A540B and CA-A800B are two powerful amplifiers known for their exceptional performance in various sound reinforcement applications. They are particularly favored in live sound settings, due to their robust design and reliability.

The CA-A540B delivers 540 watts of power per channel at 4 ohms and provides a dynamic range that excels in both frequency response and tonal clarity. It features a Class D amplification system that not only enhances efficiency but also reduces heat generation, making it suitable for extended use without the risk of overheating.

On the other hand, the CA-A800B pushes the boundaries with 800 watts of power per channel at 4 ohms. This amplifier is designed to handle demanding environments, making it an excellent choice for larger venues or applications where additional headroom is required. The CA-A800B also utilizes advanced digital signal processing, enabling users to fine-tune their audio output for optimal performance.

Both models are equipped with a range of connectivity options, including XLR and 1/4" TRS inputs, ensuring compatibility with various sound systems. They also feature Speakon output connectors, providing a secure and efficient link to loudspeakers. The rear-panel controls allow for easy adjustment of gain levels, with peak LED indicators notifying users of any clipping.

Another significant characteristic of these amplifiers is their built-in protection systems. They include short-circuit, thermal, and overload protection, which safeguards the equipment from potential damage during high-intensity performances. This focus on durability ensures that users can depend on these amplifiers in any situation without worrying about unexpected failures.

In terms of physical design, the CA-A540B and CA-A800B boast a rugged yet lightweight construction, ideal for touring musicians and sound professionals. Their compact size allows for easy rack mounting, facilitating convenient transport and setup.

In conclusion, the Peavey CA-A540B and CA-A800B amplifiers offer outstanding power, versatility, and reliability, making them essential tools for anyone looking to achieve high-quality sound reinforcement. With their array of advanced features and robust design, these amplifiers stand out as premier choices in the competitive landscape of professional audio equipment.
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