FX-11A

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Amplifiers are one of the most important components of modern setups, especially for audio applications. There are many different types of amplifiers, and the FX-11A is one of the most commonly used models. This article will discuss the application field and working principle of the FX-11A.

Application Field of FX-11A

The FX-11A can be used in a variety of applications, including but not limited to home stereo systems, audio mixing boards, and professional sound systems. The most popular application is in residential or commercial sound systems, where the FX-11A can be used to boost line level signals or drive speakers. It is also used to drive low impedance loads, such as PA speakers, guitar amplifiers, and subwoofers.

The FX-11A is also popular in studio and recording applications. It is used to add clarity to sound recordings, as well as providing extra power for long audio runs. Additionally, it is an ideal amplifier for live sound reinforcement, as it provides enough power to adequately drive speakers, while maintaining signal clarity.

Working Principle of FX-11A

The FX-11A utilizes a two-stage design, with both stages utilizing field effect transistors (FETs) as active elements. The first stage is a voltage stage, configured as a differential amplifier. This stage consists of two FETs connected in a bridge-like configuration, with one connection point to accept the input signal. The common link between the two FETs is connected to a constant voltage, which is provided by the power supply. The voltage stage amplifies the input signal and provides a plus and minus output.

The second stage is a current stage, which is responsible for increasing the output power of the amplifier. This stage also utilizes FETs in a bridge-like configuration, and accepts the output of the voltage stage. The power rails of this stage are connected directly to the power supply, providing a constant source of current to the output. By using this current amplifier, the FX-11A is able to deliver higher output power than other amplifiers.

The FX-11A also utilizes many protection circuits, such as short circuit protection, output over-current protection, and output over-temperature protection. Additionally, the amplifier is equipped with many safeguards, such as over-current protection, under-voltage lockout, and over-voltage foldback. These safeguards are essential in preventing damage to both the amplifier and any connected equipment.

Conclusion

The FX-11A is a versatile and powerful amplifier designed for use in a variety of audio applications. With its two-stage design and integrated protection circuits, it is able to provide high-quality sound while being surprisingly efficient. For these reasons, it is an excellent choice for any installation.

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