How to make an amplifier for a subwoofer?

A do-it-yourself amplification device is capable of providing high-quality low-frequency transmission. There is also a great opportunity to make the device universal, adapting it not only for the car. Any car owner knows about the decent cost of a good audio system. The price for a high-quality speaker system can be just space. Some music lovers set about creating an amplifier for the subwoofer on their own to save money. Why not do the same? But how to make an amplifier for a subwoofer, what should be paid more attention to? Answers to these questions require an understanding of many nuances. Before you engage in the installation itself, you should carefully prepare. All of this will be discussed in order in this article.

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What is required?

For a good sound, you need a subwoofer and an amplifier. To engage in the manufacture of the latter, you will have to prepare a little and acquire the following components:

• Impulse block amplifier.
• A processing device that will handle the pulse.
• AC voltage converter from 12 to 40 volts.
• Rectifier device and switching device.

To create your own car amplifier, you will need to build these blocks with your own hands or purchase ready-made ones. The second option should be considered for those people who want to save time.

What do you have to work with?

• The low-frequency amplifier unit itself is based on the TDA 7294 board. This option is most optimal for amplifiers for a 12 V radio. The price for such a component will come out quite ridiculous, which is an integral plus. It is worth paying attention to the technical parameters of the circuit, which allow the output of about 100 watts of pure power.

Important! Keep in mind that all work is done with a single-channel circuit.

• Output transistors are very demanding on cooling, so it is worth bending all the elements to the board itself in order to reach the location of the contacts up.
• It is necessary to apply thermal grease to the contact surface and install a dielectric film, and only then engage in the installation of radiators. This approach will help to significantly reduce the size of the device and save a lot of space in the device.
• The amplifier itself will require a voltage of 12 to 40 volts. The TL-494 circuit will do just fine with this task. But no one is forbidden to you to find more convenient analogues on the Internet.

Important! You need to mount the subwoofer, taking into account the incoming pulse, so it becomes necessary to select only the low frequency range. The circuit itself is a monoblock, so the input pulse must be processed by the adder channels. Such measures will help turn a two-channel impulse into a single-channel one.

Scheme

The circuit itself requires the following individual components:

1. A switch that can notify the user about the readiness of the amplifier element for operation.
2. The rectifier, which is needed in order to stabilize the pulses transmitted to the base unit of the control system.

Body

How to make an amplifier for a subwoofer at home at 12 volts? You will need to make or purchase a case:

• You can go for the trick and mount the amp in the case from the DVD player. Such a device will have small dimensions, an interesting design, and the connectors will only help in this entire procedure.
• Also the best option is to use an aluminum housing.The case itself in this case will act as a radiator, which will help to easily get rid of excess heat.
• If you are interested in wooden cases, you should think about a quality cooling system.

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We make the device

If the preparation of all the necessary elements was successful, then you can take up the installation. The 12 Volt gadget is going to be very easy. Simply connect all the available components and install them in the enclosure. The transformer allows you to install a small cooler, since there will be enough voltage to power it. Such a cooling system will perfectly cope with protection against temperature influences, which will help to increase the service life of a newly made device.

Important! When making an amplifier, avoid touching the wires in order to protect yourself from the formation of a short circuit. Install parts so that there is space between them for air circulation.

Also, the scheme will have to be qualitatively fixed, otherwise - there is a risk of hearing rattling instead of beautiful music.

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Stock footage

Now you know exactly how to make an amplifier for a subwoofer with your own hands. Follow the tips and tricks that you met today, do not forget about safety. It’s nice to realize that the quality will depend only on you, and no “hack” from the manufacturer can ruin your favorite music in your car.