“You drive a car, I sing a song, there is no loneliness on the road of loveâ€, indeed, with the company of music, even if it is boring driving, it can become a kind of enjoyment, more and more riders choose to modify Car stereo. Can the problem come, how can we buy a satisfactory audio equipment? Especially the choice of power amplifiers. No hurry, you have a coup. Determine the same benchmark comparison amplifier power Power is the most important parameter in the sound system and represents the ability of the sound system to carry loads. It is the first place we should pay attention to when purchasing. However, if all manufacturers use their own different measurement benchmarks to identify product performance, lack of sufficient understanding is often difficult to make an objective comparison, as well as power amplifiers. Pay attention to the battery voltage The voltage of the car battery is constantly changing. For two commonly used tags: 14.4V/100W and 12V/100W amplifiers are completely different power specifications. Since the voltage of the car during driving is basically around 12V, the measured power value under the condition of 12V voltage is closer to the real situation. In addition, the power that identifies the power based on the continuous voltage of 12V can achieve greater power when it reaches 12V or more. Note Harmonic Distortion Rate THD When comparing the amplifier's continuous output power, it must be performed at the same or closer THD value. The difference in sound quality measured under different THD values ​​is quite obvious. Sometimes the maximum power of its logo is high, but it is very likely that its distortion and noise are equally high. Therefore, when checking the maximum power, you should also pay attention to the THD value it identifies. Attention frequency range The amplifier's continuous power output should be tested within its actual frequency range of use. For the power of the amplifier, the complete detection range should be marked, and only the power value at a certain frequency has no meaning. In general, the principle of high power output is generally followed in the purchase of audio systems. The greater the power output of the amplifiers, the stronger their ability to drive the speakers. The power of the amplifier should be greater than the indicated power of the horn. If the selected power is too small, it will burn out easily when the power output is used for a long time, and it will also lead to poor sound quality and distortion. Defining different uses of power amplifiers Choosing a power amplifier based solely on the simple parameters given in the manual is far from enough. It should be based on the entire audio system. It is also necessary to listen to the opinions of other users or professionals and choose different models and brands of power amplifiers for different purposes. According to different uses can be roughly divided into the following categories: 1. Power amplifier designed specifically to drive bass speakers: Built-in infrasound filter eliminates the need for an external filter. 2. Amplifier with equalizer: The tone can be adjusted for personal preference or different compartment space. 3.5-channel power amplifier: Usually use 2-channel or 4-channel amplifiers to drive the front and rear speakers. The woofer is driven by another amplifier, so the occupied area is too large, and using a 5-channel power amplifier, a power amplifier Can solve the problem. 4. Multi-Chip X-Card Power Amplifiers: The unique X-card provides a variety of split-tone options for power amplifiers: high-pass, band-pass, low-pass, and even ultra-audio filters. 5. Electronic crossover modular power amplifiers: These control modules let you select which signal will go to the power amplifier and to the RCA output of the power amplifier to select the desired frequency and split point. By replacing the module, a power amplifier can be used as a diversified power amplifier. The Carbide Ball iswidely used in where extreme hardness and wearing resistant cemented carbide is required: Such as: Bearing, Ball screws, Valves and flow meters, pen, spraying machines, pump, machinery parts, oil, hydrochloric zcid lab, hardness measuring instrument and so high-end industry. Heavy alloy carbide ball is very dense and small in volume,which means it can be used in fields requiring small but heavy parts. The material that we choose to process Sintered Carbide Ball is WC94%,Co 6% (We can also provide other material as your request. Such as: WC 92%, Co 8%; WCNi). P05, P10, P20, P30, P35, P40, M10, M20, M30, M40, K01, K05, K10, K15 carbide ball are available to us. Carbide Ball Carbide Ball,Carbide Ball For Bearing,Heavy Alloy Ball,Sintered Carbide Ball Zhengtong Special Material Factory Hi&New Tech Zone Chengdu , https://www.ztferre.com