What is an Amplifier Amplifier?
The Amplifier, also known as the Amplifier in English, is a tool made up of electronic components that can receive and amplify sound and deliver it more clearly and powerfully to the user. This category of electronics has a very high diversity and consists of various branches and sub-branches.
In fact, we can refer to ready-made box amplifiers or to a variety of assembled or unassembled modular amplifier modules or kits. Also, some of these amplifier modules have DC (car battery or adapter) or AC (transformer) DC voltage and current. In addition, the amplifiers can be made with IC or IC chip of different working classes such as model AB, or class D, or STK amplifier module or transistors have been used to amplify the sound in them. Some of these amplifier boards have volume, bass and treble, or short circuit protection, and some do not.
As mentioned, this device can amplify weak audio signals. The magnitude of the amplification of these devices varies, and the power or watt characteristic, denoted by W, is usually used to determine the amount of amplified sound and to classify them. This device can have various applications and is offered in different capacities, it can be used to build a home audio system or to build a car or speaker audio system, and finally as an amplifier for religious delegations, mosques, Takayas, companies, Hospitals and doctors’ offices and hotel lobbies and …
Single and dual channel amplifier module, subwoofer
Another point that is important in the classification of amplifiers is the number of output channels of each device. In fact, these devices can have 1 output channel, ie mono, or have 2 output channels, ie stereo, or have 3 output channels, ie stereo + separate subwoofer output, or 4 channels. Items with a separate subwoofer output actually simplify the task for the user, and the user will have all the audio output frequencies separately and will no longer need a low-pass filter circuit or a high-pass audio filter circuit. You can buy different types of amplifiers and amplifier modules through Chista store website, but in the following, we will review the important specifications of this device.
Specifications of amplifiers in a specialized way
To buy different types of amplifiers, you need to pay attention to their specifications. Of course, a number of commercially manufactured devices also do not provide accurate information that can be obtained using IC datasheets and components. We will briefly discuss some of these important components to get acquainted with these concepts.
What is Real Power or RMS Amplifier?
You must have heard the term RMS or real power, because you were involved in buying an amplifier or amplifier module. To understand this word, it should be said that RMS is the abbreviated term Root Mean Square, which more or less means the square root of the square, which is also used in mathematics, but we have nothing to do with mathematics in this article and we intend to amplify the connection between this word and RMS. Let’s check the fire.
In fact, it should be noted that the continuous output power of amplifiers is measured in terms of power or watts W, but the true power of the amplifier is determined by RMS. In fact, the higher the RMS of the Amplifier device, the higher the transparency and power output of the device. Of course, it should be borne in mind that the actual power of the RMS can vary at different voltages. Most manufacturers of amplifier modules or devices with this amplifier insert the maximum MAX power on the product packaging, which is the same as the peak in the sine chart. This power is in fact the maximum power of the device in the sense that in playing a music can play the peak volume for a few seconds or a moment, and in the long run this is not possible.
Impedance resistance and speaker impedance matching
The output of the amplified sound is calculated and presented by an amplifier with an amount of impedance or resistance known as the ohm sign. It is necessary that the output of all types of speakers and speakers is the same depending on the impedance of the desired amplifier. This means that a 4-ohm amplifier needs to be connected to a 4-ohm speaker, and if several speakers are to be connected to it, the speaker impedance matching must be considered, and if necessary, the speakers must be closed in series or in parallel to output the impedance. Match the amplifier. For more information on this topic, we recommend reading this article on speaker impedance matching.
Decibels or sound sensitivity in volume
The word decibels, denoted by the letters db, can be interpreted as sensitive. Sound level is known as decibels. It should be noted that the human ear has a variety of embedded sound levels in the nonlinear process. This means that the higher the volume, the less sensitive our ears will be. In more technical terms, decibels are a logarithmic measure of the relative volume of sound.
A difference of 1 decibel indicates the lowest perceptible volume, a moderate 3db and close to 10 decibels, more or less doubling the sound. If we want to explain in a simpler language (non-scientific language) we can say whispering 15 to 25 decibels, background noise close to 35db, normal ambient sound around 40 to 60, talking 60 to 70, maximum orchestra sound 105, the pain threshold is 130db, the jet engine noise is 180 dB and the bullet firing is 140 to 165 dB.
It should also be noted that, for example, an amplifier that has a 100-watt audio output per channel can produce twice the volume of a 10-watt amplifier. This means that if we want to produce twice the volume of 100 watts, we need a 1000 watt amplifier and not 200 watts.
Types of amplifiers based on output power
This sound amplifier has different types that can be divided into this group: Ultra Micro, Micro Amp, Low Signal, Power Amp, High Power Amp. In the following, we will briefly explain about each of these groups. For headphones, options three and four are commonly used.
Ultra Micro Amplifier: This group of sound amplifiers is called Amp Ultra Micro and their function is to be able to amplify very, very weak sound signals. These sounds can be in the range of several nanovolts.
Micro Amplifier: This group is also a special group for amplifying very weak signals and is called Amp Micro. These signals can be in the range of a few microvolts.
Weak signal amps: This group is used for signals larger than microvolts and smaller than weak signals and can include several millivolts.
Amp Power: This group is used to amplify medium (medium) signals, which can include a few volts or maybe a little less.
Amp power: They have the ability to amplify signals above the average level and can sometimes reach as small as a few volts.
Buy the best home and car amplifier
Choosing, reviewing and buying the best home amplifier or car amplifier or even a subwoofer amplifier is strongly related to the features mentioned above. The power of the speaker, whether it is stereo or a dual channel amplifier or a mono channel or the output impedance and the amount of decibels all depend on the choice of the appropriate amplifier. If the buyer is not going to get into issues related to soldering and installation, etc., he can use boxed amplifiers that everything is ready and it is enough with a 2 * 0.5 speaker wire or 2 * 2 speaker wire. Connected the fire to a variety of speakers and speakers. But if you want to build an audio system (car or home) you need to specify whether sound separation is required or not?
That is, for example, a 200 watt stereo channel amplifier module and two 8-inch midrange speakers are enough, or do you need a separate 60 watt mono amplifier module and a 6-inch subwoofer speaker and low-pass filter circuit for bass and Prepared separately? What space is the output power intended for? All of these should be considered in order to choose the best purchase option.
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