Operation Modes

Stereo Operation

For stereo (dual channel) operation, turn the amplifier OFF and set the mode select switches on the back panel to the out (extended) position. In this mode, both channels operate independently of each other, with their input attenuators controlling their respective levels. Thus, a signal at channel A’s input produces an amplified signal at channel A’s output, while a signal at channel B’s input produces an amplified signal at channel B’s output.

Parallel Operation

For parallel (dual-channel/single input) operation, turn the amplifier OFF and set the connector mode (CONN MODE) switch to the parallel position by depressing the switch. Both input connectors are then strapped together and drive both channels with the same input signal. Because both connectors are strapped together, either connector can be used with a patch cable to drive the input of another amplifier. Output connections are the same as in Stereo mode. Both input attenuators remain active when in Parallel mode, allowing you to set different levels for each channel. Power and other general performance specifications are the same as in Stereo mode.

Bridged Mono Operation

Both amplifier channels can be bridged together to make a very powerful single-channel monaural amplifier. Use extreme caution when operating in the bridged mode; potentially lethal voltage may be present at the output terminals. To bridge the amplifier, depress the rear panel Bridge switch to the IN position. Direct the signal to channel A’s input and connect the speakers across the hot outputs (the “+” binding posts) of channels A and B. Only channel A’s input attenuator is active while in Bridge Mono mode. Both connectors are strapped together, so either connector can be used with a patch cable to drive the input of another amplifier.

Unlike the stereo mode, in which one side of each output is at ground, both sides are hot in bridged mode. Channel A’s side is the same polarity as its input with the minimum nominal load impedance being 4 ohms (equivalent to driving both channels at 2 ohms) in bridged mode. Driving bridged loads of less than 4 ohms will activate the DDT™ circuitry (see Indicators section), resulting in a loss of power, and may also cause a thermal (overheating) overload.

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Peavey CS 4000, CS 4080 owner manual Operation Modes, Stereo Operation, Parallel Operation, Bridged Mono Operation
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CS 4080, CS 4000 specifications

The Peavey CS 4000 and CS 4080 are powerful professional amplifiers, designed to deliver exceptional performance in various audio applications, including live sound, installations, and more. Renowned for their reliability and high output capabilities, these amplifiers have become staples in many sound reinforcement setups.

The CS 4000 is a dual-channel amplifier that produces up to 2,000 watts of continuous power at 4 ohms. This amplifier is well-suited for driving large speaker arrays, making it ideal for concert venues, clubs, and outdoor events. Meanwhile, the CS 4080 ups the ante, offering 4,000 watts of power at 2 ohms, making it an excellent choice for those who need even more headroom and clarity in demanding environments. Both models feature Peavey’s renowned DDT (Dynamic Delay Time) compression technology, which protects against clipping and distortion, ensuring that audio remains clean and defined even at high volumes.

The CS series also includes advanced thermal management systems, which prevent overheating and contribute to prolonged operational life. With forced-air cooling and highly efficient heat sinks, both amplifiers maintain optimal temperatures, even during extended use. The rugged construction provides durability, making them suitable for on-the-road applications as well as permanent installations.

Input flexibility is another key feature of the Peavey CS amplifiers. They come equipped with XLR and 1/4-inch TRS inputs, facilitating seamless integration with various audio sources. Output options include speakON and binding post connectors, ensuring compatibility with a wide range of speaker configurations.

User-friendly controls such as level adjustment knobs on the front panel allow for easy tweaking of output levels. Additionally, the CS 4080 has a built-in Limiter indicator, providing useful feedback on signal levels to prevent unintentional overloading.

Both amplifiers also feature a switchable low-frequency filter, enhancing the overall performance of the sound system by reducing unwanted subsonic frequencies. With their robust power output, technological advancements, and reliable performance, the Peavey CS 4000 and CS 4080 are widely regarded as industry standard amplifiers, capable of meeting the rigorous demands of professional audio environments. Whether for touring musicians, DJs, or permanent installations, the CS series continues to impress audio professionals worldwide.
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