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Do you know power amplifier technology?

source:Industry News release time:2022-11-08 Hits:     Popular:Brand bar audio wholesale

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  1、 Classification of power amplifier

  There are great differences in the appearance, circuit design and price of power amplifiers due to different uses.

  1. According to the different conductive modes of power amplifier tubes, they can be divided into Class A (Class A), Class B (Class B), Class A (Class AB) and Class D (Class D). Class A and Class B power amplifiers can effectively solve the problem of crossover distortion of Class B amplifiers. Their efficiency is higher than that of Class A amplifiers, so they are widely used. Class D power amplifiers have high efficiency and small size, but they are not suitable for broadband amplifiers. They are widely used in active subwoofers.

  2. Power amplifiers can be divided into professional power amplifiers, AV power amplifiers and Hi Fi power amplifiers according to their applications. AV power amplifier is suitable for home theater; According to the design structure, Hi Fi power amplifier can be divided into two types: combined amplifier, pre amplifier and pure post amplifier. Hi Fi power amplifier can reproduce music with high fidelity, with large price difference.

  3. According to different output forms of power amplifier, power amplifier can be divided into two types: constant voltage and constant resistance. The constant voltage power amplifier is applicable to the broadcasting system with long transmission distance, and the constant resistance power amplifier is applicable to the audio system with constant resistance output. We should choose the constant resistance power amplifier in the conference room.

  In addition, some power amplifiers are specially used in special occasions, such as low-voltage power amplifiers for vehicles.

  II Characteristics of professional power amplifier

  Professional power amplifiers require high stability, high reliability, large power margin and small temperature rise of output stage due to their high-power and long-term working conditions.

  In meetings, performances and venues, power amplifiers with strong driving capacity, high output power, clear and bright sound and moderate loudness should be selected. Hi Fi audiophile power amplifier is high fidelity, emphasizing that the "original taste" of music requires high level of detail and level of music.

  The power amplifier in KTV and other entertainment places shall be easy to adjust and use, have specific sound effects, have reliable product performance, and have perfect circuit protection measures.


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