High-tone-quality power amplifier

Abstract

The utility model discloses a high-tone-quality power amplifier, which comprises a front-end amplification part and a tail-end amplification part, the front-end signal amplification part and the tail-end amplification part are in split-phase connection, and the working mode is as follows: a left signal L is pre-amplified by a left channel pre-amplification circuit IC2 and is isolated by a left channel connector TL transmitter; and split-phase coupling is carried out to a left channel positive power amplifier IC5, and the split-phase coupling is carried out to a left channel negative power amplifier IC4 through a left channel loudspeaker L8r. A right signal R passes through a right channel pre-amplification circuit IC1 (pre-amplifier), and is isolated, split-phase coupled to a right channel positive power amplifier IC3 through a transmitter and then reaches a right channel negative power amplifier IC6 through a right channel loudspeaker R8r through a right channel connector TR. Due to the optimized combination, the circuit is simple, the applicability is high, the cost is low, the sound quality is good, the performance is reliable, and the system is suitable for various entertainment venues and professional posts.

Description

Technical Field

[0001] The utility model belongs to the field of audio power amplifiers, in particular to a high-quality sound power amplifier. Background Art

[0002] Existing multi-frequency power amplifiers have multiple weaknesses. They are generally noisy, and the current transformers are too large and heavy. Even with many so-called advanced methods, they cannot be completely eliminated. Crossover distortion, in particular, has become the fatal weakness of all power amplifiers. The connector I invented solves this long-standing problem in a simple way. The sound quality of traditional power amplifiers is dull and boring after listening for a long time. In fact, this is crossover distortion or transient distortion. Utility Model Content

[0003] The technical problem to be solved by the utility model is that traditional power amplifiers generally have complex circuits, loud noise, overweight current transformers and serious crossover distortion.

[0004] In order to solve the above technical problems, the solution of the utility model is as follows: comprising a front end amplifying part and a rear end amplifying part, wherein the front end amplifying part includes a left signal L 入 , left channel preamplifier circuit IC2, left channel connector TL, left channel positive power amplifier IC5, left channel speaker L 8r , the left channel negative power amplifier IC4, the left signal L 入 The signal is transmitted to the left channel preamplifier circuit IC2 for amplification. The left channel preamplifier circuit IC2 transmits the amplified signal to the left channel connector TL for isolation. The left channel connector TL couples the signal in phase to the left channel positive power amplifier IC5. The left channel positive power amplifier IC5 signal is transmitted to the left channel speaker L 8r Delivered to the left channel negative power amplifier IC4, the end amplification part includes the right signal R 入 , right channel preamplifier circuit IC1, right channel connector TR, right channel positive power amplifier IC3, right channel speaker R 8r , right channel negative power amplifier IC6, the right signal R 入 The signal is transmitted to the right channel preamplifier circuit IC1 for amplification. The right channel preamplifier circuit IC1 transmits the amplified signal to the right channel connector TR for isolation. The right channel connector TR couples the signal in phase to the right channel positive power amplifier IC3. The right channel positive power amplifier IC3 transmits the signal to the right channel speaker R 8r Delivered to the right channel negative power amplifier IC6.

[0005] Preferably, the front-end amplifying part and the end-end amplifying part are combined in a connectionless transmission phase-split manner.

[0006] Preferably, the front-end amplifier part and the end amplifier part are combined in a BTL crossover mode, wherein the left channel positive power amplifier IC5 and the left channel speaker L 8r , the left channel negative power amplifier IC4 constitutes the left channel power amplifier part, the right channel positive power amplifier IC3, the right channel speaker R 8r , right channel negative power amplifier IC6 constitutes the right channel power amplifier part, making it a BTL cross combination.

[0007] Preferably, the left channel connector TL and the right channel connector TR both adopt a connectionless coupling and positive and negative phase separation signal transmission mode.

[0008] Compared with the prior art, the beneficial effects of the present invention are:

[0009] The utility model isolates the noise brought by the signal. The front-end amplifier part and the terminal power amplifier part adopt the BTL crossover method, which eliminates the problem of crossover distortion, thereby improving the current utilization rate, reducing the traditional current reserve required, greatly reducing the weight of the current transformer, and reducing costs. In summary, the connection method adopted simplifies the circuit, eliminates noise, restores the analog signal, authenticity, and improves the sound quality. The front-end amplifier part and the terminal amplifier part are combined in a non-connected transmission phase-split method, which completely eliminates transient distortion, enhances the frequency response characteristics, increases the power by about two times, and has excellent mid- and high-frequency performance, and the frequency response characteristics surpass those of vacuum tubes. The core is the left channel connector TL and the right channel connector TR connector, which adopts a non-traditional non-connected phase-split signal transmission method to completely eliminate noise and simplify the circuit. The analog signal is not lost or deformed, and no impedance matching is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the circuit structure of the utility model. DETAILED DESCRIPTION

[0011] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0012] Reference Figure 1 , L in the figure 入 : Left signal, IC2: Left channel preamplifier circuit, TL: Left channel connector, IC5: Left channel positive power amplifier, L 8r: Left channel speaker, IC4: Left channel negative power amplifier, IC1: Right channel preamplifier circuit, TR: Right channel connector, IC3: Right channel positive power amplifier, R 8r : Right channel speaker, IC6: Right channel negative power amplifier.

[0013] A high-quality power amplifier includes a front-end amplifier part 1 and a rear-end amplifier part 2. The front-end amplifier part 1 includes a left signal L 入 , left channel preamplifier circuit IC2, left channel connector TL, left channel positive power amplifier IC5, left channel speaker L 8r , the left channel negative power amplifier IC4, the left signal L 入 The signal is transmitted to the left channel preamplifier circuit IC2 for amplification. The left channel preamplifier circuit IC2 transmits the amplified signal to the left channel connector TL for isolation. The left channel connector TL couples the signal in phase to the left channel positive power amplifier IC5. The left channel positive power amplifier IC5 signal is transmitted to the left channel speaker L 8r Delivered to the left channel negative power amplifier IC4, the end amplification part 2 includes the right signal R 入 , right channel preamplifier circuit IC1, right channel connector TR, right channel positive power amplifier IC3, right channel speaker R 8r , right channel negative power amplifier IC6, the right signal R 入 The signal is transmitted to the right channel preamplifier circuit IC1 for amplification. The right channel preamplifier circuit IC1 transmits the amplified signal to the right channel connector TR for isolation. The right channel connector TR couples the signal in phase to the right channel positive power amplifier IC3. The right channel positive power amplifier IC3 transmits the signal to the right channel speaker R 8r Delivered to the right channel negative power amplifier IC6.

[0014] Specifically, the front-end amplifier part 1 and the end-end amplifier part 2 are combined using a non-connected transmission phase splitting method, which completely eliminates transient distortion, enhances frequency response characteristics, and achieves mid- and high-frequency characteristics that surpass those of vacuum tubes.

[0015] Furthermore, the front-end amplifier part 1 and the end amplifier part 2 are combined in a BTL crossover mode, wherein the left channel positive power amplifier IC5 and the left channel speaker L 8r , the left channel negative power amplifier IC4 constitutes the left channel power amplifier part, the right channel positive power amplifier IC3, the right channel speaker R 8rThe right channel power amplifier section is composed of the negative power amplifier IC6, which is combined into a BTL crossover configuration. This eliminates crossover distortion, thereby improving current utilization, reducing the required current reserve, significantly reducing the weight of the current transformer, and reducing costs.

[0016] Furthermore, the left channel connector TL and the right channel connector TR both adopt a connectionless coupling and positive and negative phase separation signal transmission method. After the left channel connector TL and the right channel connector TR are isolated, noise is eliminated, the analog signal is restored, and the sound quality is improved.

[0017] Here’s how it works:

[0018] Left signal L 入 The left channel preamplifier circuit IC2 is preamplified by the left channel connector TL transmitter isolation, phase-coupled to the left channel positive power amplifier IC5 via: left channel speaker L 8r To the left channel negative power amplifier IC4. Right signal R 入 Through the right channel preamplifier circuit IC1 (preamplifier), the right channel connector TR (transmitter isolation phase coupling to the right channel positive power amplifier IC3 through the right channel speaker R 8r To the right channel negative power amplifier IC6). The left channel connector TL and the right channel connector TR transmitter both adopt a no-connection coupling, positive and negative phase input mode. The left channel positive power amplifier IC5 is connected to the left channel speaker L 8r The left channel is formed by crossing the left channel negative power amplifier IC4, and the right channel positive power amplifier IC3 is connected to the right channel speaker R 8r It is crossed with the right channel negative power amplifier IC6 to form the right channel. Due to the optimized combination, the circuit is simple, the applicability is strong, the cost is low, the sound quality is good, and the performance is reliable. It is suitable for various entertainment venues and professional positions.

[0019] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A high-quality sound power amplifier, comprising a front-end amplifier portion (1) and a rear-end amplifier portion (2), characterized in that: The front end amplification part (1) includes the left signal L 入 , left channel preamplifier circuit IC2, left channel connector TL, left channel positive power amplifier IC5, left channel speaker L 8r , the left channel negative power amplifier IC4, the left signal L 入 The signal is transmitted to the left channel preamplifier circuit IC2 for amplification. The left channel preamplifier circuit IC2 transmits the amplified signal to the left channel connector TL for isolation. The left channel connector TL couples the signal in phase to the left channel positive power amplifier IC5. The left channel positive power amplifier IC5 signal is transmitted to the left channel speaker L 8r Delivered to the left channel negative power amplifier IC4, the end amplification part (2) includes the right signal R 入 , right channel preamplifier circuit IC1, right channel connector TR, right channel positive power amplifier IC3, right channel speaker R 8r , right channel negative power amplifier IC6, the right signal R 入 The signal is transmitted to the right channel preamplifier circuit IC1 for amplification. The right channel preamplifier circuit IC1 transmits the amplified signal to the right channel connector TR for isolation. The right channel connector TR couples the signal in phase to the right channel positive power amplifier IC3. The right channel positive power amplifier IC3 transmits the signal to the right channel speaker R 8r Delivered to the right channel negative power amplifier IC6.

2. The high-quality sound power amplifier according to claim 1, wherein: The front-end amplifying part (1) and the end-end amplifying part (2) are combined in a connectionless transmission phase-split manner.

3. The high-quality sound power amplifier according to claim 2, wherein: The front end amplifying part (1) and the end amplifying part (2) are combined in a BTL crossover mode, wherein the left channel positive power amplifier IC5 and the left channel speaker L 8r , the left channel negative power amplifier IC4 constitutes the left channel power amplifier part, the right channel positive power amplifier IC3, the right channel speaker R 8r , right channel negative power amplifier IC6 constitutes the right channel power amplifier part, making it a BTL cross combination.

4. The high-quality sound power amplifier according to claim 1, wherein: The left channel connector TL and the right channel connector TR both adopt a signal transmission mode of connectionless coupling and positive and negative phase separation.

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