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Small speakers for a laptop

Owners of mobile mini-PCs are familiar with the situation - you talk with friends on Skype, but because of the too quiet built-in speaker, their voice is almost inaudible, or quiet online movies at night, etc. The solution to this problem is quite simple - portable speakers! Speakers can be made as do it yourselfand buy ready-made at the store.


And then one day, precisely because of a similar problem, such speakers for a laptop were purchased from an incomprehensible manufacturer. Well, if the manufacturer is incomprehensible, then it immediately becomes clear - the Chinese. The speakers are quite stylish and compact, the power is supplied from the USB connector of the computer, the signal input to the amplifier is fed through the headphone jack.

The speakers have an additional volume control, which was hidden behind the main speaker, in which the power amplifier was assembled. Just for fun, the amplifier speaker was disassembled, because after turning on the speakers, I was struck by an unusually loud and clear sound, indescribably smooth bass (unrealistically powerful bass, and the speakers were small).

Inside, two TDA2822M chips were found in an SO8 package and a pair of smd components. The microcircuits were connected in a non-standard way. With a bridge connection, the microcircuit can produce up to 2-2.5 watts, in some cases even up to 3 watts.

To filter the power, there is also an electrolytic capacitor. Most of all I was struck by the dynamic heads, in addition to the beautiful appearance, they were also very powerful, I was convinced of this after connecting to the SAMSUNG music center 60 watts per channel, the speakers roared, but did not fail even at maximum volume! After the experiment, they were again assembled in a case and will probably be used for its intended purpose - like speakers to a laptop. As a result, for $ 10 I got stereo speakers of very good quality (to be honest, I did not expect this from the Chinese, but the fact remains), if anyone comes across the same, then take it - they are worth it.

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2 commentary
And in order to make these speakers, you need to buy speakers in the magazine for 150 rubles and break them
AKA KASYAN
Please indicate the name of the author (AKA KASYAN) of the review, the article was published by me 2 years ago on one of the sites, if you need to prove copyright, I can find the article and link. Thanks in advance.

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