How to solve the problem of audio recommendation when audio has current sound?

Recently, the weather is humid, and many friends will turn on the stereo to avoid the accumulation of water vapor in the stereo. But at this time, many friends will find that their stereos will have electric current sound. What's going on here? How to solve the current sound in the stereo? Let Bian Xiao introduce you.

Speaker problem:

This problem is solved from three aspects:

1. Turn on other electrical switches and the speakers will respond. It shows that your speaker has a high sensitivity. You might as well change its audio line to a shielded audio line, and the cost is about 10 yuan. It is best to cover the power amplifier (front stage) in the machine with a metal cover, and the metal cover is grounded or grounded.

2, open the speaker itself has a sonic boom. The solution is to use bootstrap switch circuit instead of switch, or turn the speaker to the minimum first.

3. There is a buzz. That's because the capacitor used to remove AC components in the rectifier part of your power supply is broken, or the inductance coil is short-circuited. Generally, the first capacitor in the rectification section is connected in parallel at both ends of the positive and negative electrodes. Just buy another one and replace it according to the above logo (don't connect the positive and negative poles of the capacitor backwards). Another possibility is that the audio line of your signal source is not shielded, which causes electromagnetic waves in space to interfere with the signal source, and the amplifier amplifies this part of the clutter, resulting in buzzing. Just replace the first one with a shielded wire.

If you can't do it yourself, the easiest way is to (1) buy a shielded signal line. (2) Just buy a set of power supply with rectifier and change it directly. But the cost is higher than repairing it yourself.

HiVi hivi D 10 10-4

Highlight: The triple band made of pure wood is excellent.

Insufficient products: dim color matching.

Applicable people: intermediate users

Editor's comment: HiVi hivi D 10 10-4 is simple and fashionable in appearance, and the design of the box is also relatively traditional. The square box doesn't have many bright spots, but it gives people a more stable feeling; The surface of the fuselage is covered with black fine wood grain, and the side of the fuselage is also designed with metal control knobs, which are volume adjustment, bass gain and treble gain respectively; Simple appearance and convenient operation.

In terms of sound quality, Hivi Hivi D10/KLOC-0-4 adopts a 4-inch medium-low frequency speaker unit and a 20mm diameter silk dome tweeter unit with a rated output power of 34 watts; The sound quality is full and mellow, and the sound is sweet; High frequency is clear and distinct. Although the performance of bass is slightly insufficient, this speaker is definitely a good choice for friends who like to listen to light music such as pop music, classical music and jazz.

Huilong L85 1

Highlight: With Bluetooth connection function and wireless infrared remote control.

Insufficient products: The clarity of sound quality in Bluetooth mode needs to be improved.

Applicable people: friends who prefer functional products.

Editor's comment: Huilong L85 1 is a multifunctional desktop 2.0 speaker specially designed for young people who like to taste music at home. The box of this speaker is made of high-density board, and the periphery of the box is covered with dark fine wood grain, which is simple and fashionable; It is worth mentioning that this speaker is also designed with USB flash drive and SD card socket on the side of the fuselage, which supports the function of card reader and is compatible with MP3/WMA format files, so that you can experience the fun of wireless listening at any time.

In terms of performance, Huilong L85 1 also supports Bluetooth wireless connection, which makes you get rid of the bondage of wiring and sounds more comfortable and portable. In terms of sound quality, L85 1 adopts a 4-inch medium-low frequency speaker unit and a large-caliber tweeter unit with a diameter of 3 1mm, with a rated output power of 35 watts; Full and mellow sound quality, clear and transparent, excellent analytical power, suitable for putting on the desktop to taste music.

Bian Xiao not only introduced how to solve the sound in the current stereo, but also recommended several stereos for everyone. If you want to buy a stereo, you can refer to Bian Xiao's introduction.