High Quality ODM OEM Custom CNC Machining Audio Amplifier Front Control Aluminum Panel

Sound amplification system is a branch subsystem of audio and video system integration, that is, we often say the sound, including back music, broadcasting, and so on. Basic equipment consists of a sound box, power amplifier, and microphone commonly.

Its system structure can be divided into four parts: restore equipment, peripheral equipment, control equipment, and audio source equipment.

Reduction equipment: equipment that converts electrical signals into sound waves. There are sound box (loudspeaker), and a power amplifier.

Peripheral equipment: the full name should be "peripheral processing equipment", that is, electroacoustic signal polishing, filtering, and other processing equipment. Common are processor, equalizer, pressure limiter, divider, exciter, delay device, effect device, feedback suppressor, etc.

Control equipment: that is, the electroacoustic signal input, output, mixing, shunt, and another control adjustment, including mixer, digital audio media matrix, AV mixed matrix, and so on.

Sound source equipment: as the name implies that the source of electroacoustic signal equipment, such as microphones is to collect sound waves into electrical signals. Professional equipment: microphone, CD/DVD player, computer, MD machine, booth, etc.

Application and Prospect of aluminum

Because aluminum is abundant in reserves and has many excellent properties, it is widely used in industry and life. Next, we will briefly introduce the application of aluminum according to its properties.

The density of aluminum alloy power cable is 2.7g/cm ³ (one-third of the density of iron and copper), good ductility, conductivity is two-thirds of that of copper wire, but the quality is only one-third, the price is cheaper, and it is widely used in the manufacture of high-voltage wires, cables, and radio industries. The density of pure aluminum is relatively low, but the density and hardness of aluminum alloy have been greatly improved. At present, aluminum alloy has been widely used in aircraft, automobiles, trains, shipbuilding, and other manufacturing industries. In addition, space rockets, space shuttles, and artificial satellites also use a large amount of aluminum and aluminum alloys.

Aluminum is a good conductor of heat (its thermal conductivity is three times greater than that of iron). In industry, aluminum can be used to make all kinds of heat exchangers, heat dissipation materials, and cookers.

Aluminum has good ductility (second only to gold and silver) and can be made into aluminum foil thinner than 0.01 mm at 100 ℃ ~ 150 ℃. These aluminum foils are widely used for packaging cigarettes, candy, etc. they can also be made into aluminum wires and strips and can roll various aluminum products.

In the air, the surface of aluminum will form a dense oxide protective film to make it corrosion-resistant, so it is often used to manufacture medical devices, chemical reactors, refrigeration devices, oil refining devices, oil, and natural gas pipelines, etc.

Thermite is often used to melt refractory metals and weld rails. Aluminum is also used as a deoxidizer in the steelmaking process. Aluminum powder is evenly mixed with graphite, titanium dioxide (or oxides of other high melting point metals) at a certain ratio, coated on metal, and calcined at high temperature to make high-temperature resistant cermet, which has important applications in rocket and missile technology.

Aluminum can emit a lot of heat and dazzling light when it is burned in oxygen. It is often used to make explosive mixtures, such as ammonium aluminum explosives (mixed with aluminum powder, ammonium nitrate, charcoal powder, soot, and other combustible organic substances), combustion mixtures (such as bombs and shells made of thermite can be used to attack targets that are difficult to catch fire or tanks, cannons, etc.) and lighting mixtures (such as aluminum powder 28%, barium nitrate 68% and shellac 4%).

Aluminum powder has silver white luster (generally, the color of the metal in powder form is mostly black). It is often used as paint, commonly known as silver powder and silver paint, to protect iron products from corrosion and beauty.

Low-temperature resistance. When the temperature is low, the strength of aluminum increases without brittleness, so it is an ideal production device for low-temperature device materials, such as refrigerators, freezers, Antarctic snow vehicles, and hydrogen oxide.

Aluminum plates also have good light reflection performance. The reflected ultraviolet ray is stronger than that of silver. The purer aluminum is, the better its reflection ability is. Therefore, it is often used to manufacture high-quality reflectors, such as solar cooker reflectors.

Some food additives also contain metal aluminum, such as alum, leavening agent, leavening agent, etc. they are also used in some fried dough sticks, steamed bread, fried dough twist, vermicelli, and some puffed foods (such as potato chips).

Aluminum has sound absorption performance and good sound effects, so aluminum is also used in the ceilings of broadcasting rooms and modern large-scale buildings. Many doors and windows in the family use aluminum alloy frames for this consideration.