The power of standard phone speakers is not enough for everyone. Many people like to listen to music very loudly. To increase the sound level, you need to make a special amplifier.
Before you make a column, you need to purchase the necessary parts. First of all, we buy a TDA2003 chip or something similar to it. Alternatively, you can choose K174UN14. Next, capacitors of different capacities are purchased: 10 mF (one), 100 mF (two), 0.1 mF (one), 470 mF (one). Their voltage must be at least 16 volts, however, it is allowed to use high voltage capacitors, but in this case the power consumption will be increased.
Before you make a column with your own hands, you need to prepare the resistors. You will need only three of them: 10 Ohm, 1 Ohm and 1 kOhm. Of course, do not forget about the speaker and solder with a soldering iron.
When everything is bought, and the workplace is prepared, we proceed to the assembly. It should be noted that mono analog should be selected as an amplifier. There are several reasons for this. First, a mono amplifier consumes very little power. Secondly, before you make a speaker for your phone with your own hands,it is necessary to clearly understand for yourself that it is necessary to organize such a volume so that it is of the highest quality, and the battery can ensure the operation of the device for a long time.
The amplifier circuit should be checked, do not take the first one that comes across, as there is a chance of damaging the phone.
It is better to assemble the amplifier on a special printed circuit board, if there are no skills in its production, then you can use ordinary cardboard. Before making a column, holes are pierced in a flat sheet of cardboard, parts are fixed and interconnected with thin wires.
When the assembly is finished, proper cooling of the microcircuit should be organized. It can be an ordinary aluminum frame or a small plate that is screwed to the microcircuit case with one bolt.
You can choose three rechargeable batteries from the phone as a power source, the total capacity of which should be no more than 11 volts. The optimal speaker for such an amplifier would be up to 8 ohms.
How to make a column yourself? It is recommended to try the speakers from the car. The 4-ohm counterpart from the PIONEER car music system works great and produces great sound.
The case of the new device can be borrowed from the old speaker that is used for the computer.
We looked at how to make a column ourselves, but did not saythe main thing: sound is not absorbed in a wooden case, so the sound is better. Lower frequencies will be reproduced here, and the sound will be without unpleasant rattles and extraneous interference. In addition, high frequencies create strong vibrations, so plastic and iron begin to make noise in time with the music. Few people will like this addition.
Soldering parts should not be delayed, you must not overheat the elements, otherwise they will quickly fail, and the pleasure from the product will be short. It is important that there are no foreign objects in the workplace during soldering.
