Metal scrap HS code classification

List of catalogs of this article:

• 1, What audio enthusiasts want to know - car audio modification cold knowledge
• 2, How much does it cost to modify the car stereo?
• 3, How to modify the car audio?
• 4 、 Knowledge of car audio modification wiring
• 5,Metal scrap HS code classification car Audio modification scheme recommendation
• 6, How much does it cost to modify a car stereo?

What audio enthusiasts want to know - car audio modification cold knowledge

1. Alias: advanced. Power amplifier: It can drive the speaker before it is connected to the speaker. Alias: post-level, amplifier, pure amplifier, etc. Combined amplifier: preamplifier + power amplifier. Host The host is the sound source of the whole stereo, and it is also a control center. The operation of the audio must be realized through the host.

2. Choose a regular and professional car audio modification shop. In fact, most of the car audio modifications in China are carried out in car beauty shops or car decoration sales shops, and the technicians there basically have no modification experience.

3. The arrangement of the speaker should consider the sound field. In terms of audio modification, amplifiers, speakers and other modificationsIt is very important. At the same time, the position and layout of the installation of audio equipment will also have a great impact on the sound effect. This is like cooking dishes. Not only good ingredients, but also excellent cooking skills can cook excellent and fragrant dishes.

4. As a mobile concert hall, car audio turns lonely travel into a kind of enjoyment. Whether you are a car audio enthusiast or not, you will be deeply attracted by their unique magnetism in the face of these metal-filled equipment. Next, I will share the knowledge of car audio modification amplifiers with you. Welcome to read and browse.

How much does it cost to modify the car stereo?

Car modified audio is about 1,000 yuan to 2,000 yuan. Car audio modification, as the name implies, isThe purpose of modifying and upgrading the car's audio is to meet the needs of car owners and friends for car music, so that the in-car audio space expresses the "fever" pursuit of music for music lovers in the best sound field expression.

Car audio modification is suitable for two to three thousand: many car owners want to modify car audio, mainly because of the poor quality of car speakers, blurred hearing, lack of three-dimensional sense, inability to hear the hierarchy of sound, etc.; the price of car audio is a matter of concern to everyone. The price of car audio ranges from about 1,000 yuan to tens of thousands of yuan.

The price of car audio modification is about more than 2,000 yuan. The modified audio is to modify and upgrade the car's audio. The purpose is to meet the needs of car owners and friends for car music; so that the in-car audio space can express the "fever" pursuit of music lovers in the best sound field expression.

This depends on how much your budget is to modify the stereo. Generally, it is relatively good to be 2,000 to 5,000 yuan, and if you are more cool, it is tens of thousands of yuan.

How to modify the car audio?

Replace the high school woofer; add an amplifier; install a subwoofer; replace the host; car soundproofing.

The method of modifying car audio is as follows: determine your favorite music style. As the saying goes, you can wear shoes as big as your feet are, and the same goes for modified car stereos. According to my own actual situation, I modified the car audio system of my beloved car, firstly, to meet my needs, and secondly, I did not cause any financial pressure on myself.

When modifying car audio, you can improve the quality of music by replacing a higher-power amplifier or a higher-quality speaker, but you must pay attention to reserve space for upgrading the audio to prevent one-time modification.

Therefore, when installing the modified in-car audio, you must pay attention to installing soundproof cotton in the engine compartment to play the role of sound insulation and sound absorption, and purify the environment where the occupants enjoy the car audio.

Be sure to go to a regular large factory for modification, and don't be greedy for small bargains.Reserve space for audio upgrades: Car audio modification is a gradual process. From the speaker, the effect to the host, a certain amount of reserved space is needed, otherwise it will not be easy for the owner to upgrade in the future.

The first thing to pay attention to for modification is the circuit problem. When modifying and repairing the car audio, you must go to the car audio modification shop with professional experience. Stereo reserved space. When it comes to reserved space, many car owners are confused.

Car audio modification wiring knowledge

The output power of the amplifier must exceed about 5 times the output power of the speaker. It must be effectively all over the parts of the horn. The power flow rate of the switching power supply must exceed the total output power flow rate, preferably twice. Equipment installation In order to better avoid vibration loosening, the instrument must be installed tightly.

Car audio modification wiring knowledge Selection of car audio wiring The smaller the resistance of the car audio wire and the less power consumed on the wire, the higher the efficiency of the system. Even if the wire is very thick, a certain amount of power will be lost due to the speaker itself, and the efficiency of the whole system will not reach 1 00%.

Wiring method of car audio modified subwoofer: prepare simple tools, including files, sandpaper, hand drills, paper cutters, screwdrivers, etc. There is already a wiring diagram on the back of your stereo. The on-board computer has sufficient power, and the tone is not necessarily wrong.

Car audio modification scheme recommendation

1. How to modify car audio: do a good job in car sound insulation and shock absorption, prevent the sound resonance of vehicle interior parts, and try to do a good job of sound insulation under reasonable circumstances.Choose a set of matching equipment, including but not limited to high school woofer, frequency divider, amplifier, DSP, playback equipment.

2. Modification scheme: host + front door cover three-frequency speaker + rear door cover speaker + dual amplifier + whole vehicle soundproofing + subwoofer + audio special cable, the price is generally between 10,000 and 30,000 yuan.

3. CD/MD has good integrity and is a recognized high-fidelity stereo sound equipment. Therefore, some owners of modified cars will choose to install a CD host to ensure the sound quality of the sound source. Car audio modification, the mainstream is to modify the speaker and amplifier part. The following are several common modification schemes and budget scopes.

How much does it cost to modify a car stereo?

Car audio modification costs about 1000-3000.Automobile modification refers to the change of the external shape, internal shape and mechanical properties of the original car produced by the automobile manufacturer according to the needs of the car owner, mainly including body modification and power modification.

Car audio modification is suitable for two to three thousand: many car owners want to modify car audio, mainly because of the poor quality of car speakers, blurred hearing, lack of three-dimensional sense, inability to hear the hierarchy of sound, etc.; the price of car audio is a matter of concern to everyone. The price of car audio ranges from about 1,000 yuan to tens of thousands of yuan.

This depends on how much your budget is to modify the stereo. Generally, it is relatively good to be 2,000 to 5,000 yuan, and if you are more cool, it is tens of thousands of yuan.

The price of car audio modification is about more than 2,000 yuan. The price of car audio modification is to upgrade the car's audio modification, and the purpose is to meet the needs of car owners for car music;Let the audio space in the car express the "fever" pursuit of music lovers in the best sound field expression.

How much does it cost to change a set of stereos in a car? In fact, a set of stereos can be modified, from one or two thousand yuan to tens of thousands of yuan. But the important thing is that what suits you is good! Therefore, every step of modifying the stereo should be counted in mind. First of all, you have to buy a suitable set of stereo. Therefore, you have to know the brand of car audio first.