How to make a sound amplifier?

Very often, connecting speakers to a device requires a separate amplifier device. But what if the base amplifier fails? You can try to take the initiative in your own hands and create your own device. How to make a sound amplifier? Having basic knowledge of working with printed circuit boards, you can make such a device yourself. And we will tell you about this in this article.

to contents ↑

Making an amplifier device

Absolutely any assembly should be accompanied by a search for the necessary components and tools:

• First you need to get a soldering iron with a heat-resistant support. Special soldering stations are best suited, which can be easily found and purchased at any ham radio store.
• If the assembly process at home is carried out only in order to test the circuit or use it for a short time, then the option with wires is perfect. But such a method will require more workspace to accommodate parts.
• The printed circuit board gives a guarantee of compactness of the device and convenience in subsequent operation. A popular budget amp for a pair of headphones or speakers is very easy to recreate on the basis of a chip that provides a basic set of accessories.
• To such a circuit, you just need to add a couple of resistors and capacitor elements.

The cost of mounting the board is much lower than the market value of the finished amplifier from any hardware store, but the functionality is limited by the capabilities and tools that you have available.

Important! Do not forget about the features of small monoblocks, which you will assemble yourself. The circuit generates a considerable amount of heat during operation, so be sure to exclude any contact of this part with other components of the device. A radiator grill can be used to remove heat.

The next feature is a low threshold voltage consumption. This feature allows you to use the amplifier anywhere.

to contents ↑

How to assemble an amplifier for a laptop at home?

First you need to understand: do you need to create such a device in general? Home assembly may be required for the following cases:

• The built-in audio system is out of order and you need a new one.
• The quality of the transmitted sound does not meet your needs.

Important! For these cases, the simplest amplifier element is needed, the power of which is about 2 watts.

Tools for work

First, you will need to acquire the tools that every self-respecting amateur radio amateur has:

1. Pliers.
2. Pay.
3. Soldering iron (soldering station).
4. Housing and radio components.

Important! You will need polar and non-polar capacitors, as well as a set of resistors. We recommend you get several packages with different denominations at once. You also need to purchase a switch and a jack, which will be needed to exit to the speaker.

After preparation, you can begin to “create” the device:

1. Download the necessary scheme from the Internet with the .lay format.
2. Find a radiator whose size will keep the temperature below fifty degrees Celsius.
3. Open the downloaded scheme, arm yourself with tools and proceed to assembly.

to contents ↑

Headphone amp

The simplest device is required to have low power and the required energy consumption. Consider the ideal case:

1. The device is powered by finger-type batteries or a regular 3 V adapter.
2. It is best to choose a quality chip. An excellent candidate is the TDA 2822 circuit or its analogues.
3. The following radio components will be needed: four capacitors per 100 microfarads, a copper wire with a length of up to 30 centimeters, a jack for a jack.

Having all these things, you can safely download the necessary scheme from the Internet and get to work.

Important! If you have a desire to fit the whole thing in a small closed case, then you need to get a heat sink.

If you are a car enthusiast, then it will be useful for you to know how to assemble a sound amplifier yourself in a car.

to contents ↑

Subwoofer Device

If the previous cases did not raise your questions, then everything should go smoothly here. The low-frequency amplifier at home can be made on the basis of the TDA 7294 chip. Here you will also have powerful acoustics with good bass and a wonderful car amplifier.

You will need:

• Power supply for three dozen volts. The device must be bipolar.
• Capacitors and resistors, the values ​​of which will be indicated on the diagram of the assembly drawing.

Important! Such amplifiers work great at low frequencies and give an output power of up to 100 watts.

Small amplifier for small speakers

The fact that the device will be stationary is only at your fingertips. This will expand the selection of power adapters, any available on hand. Small size and nice appearance of a budget device can be achieved if you follow the following rules:

• It is necessary to work with a very high-quality printed circuit board.
• You need to use a case made of metal or plastic, which should be quite durable.
• It is necessary to skillfully wield a soldering iron, so as not to cover the device with solder.
• It is advisable to use only ready-made sockets.
• The radiator should not touch anything except the chip itself.

Lamp amplifier

Such devices are quite expensive if you do not immediately have the necessary "source". Old-school hams always keep a small collection of lamps and other useful components in their closets.

How to assemble an amplifier? In general, it is not so difficult to do this if you are ready to kill several days of time looking for a good scheme. The circuit of such an amplifier is unique each time and will always depend on the sound source itself. Other factors are dimensions, power, and related technical parameters.

Important! We recommend that you do not undertake the creation of such a device if you doubt your abilities.

to contents ↑

Stock footage

The beauty is that the result depends only on your interest and skills, which makes the whole process only more interesting.