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3-inch full-frequency small speakers (1 Viewer)

jiaowo

Auditioning
Joined
Sep 12, 2017
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comy
Last week, I bought a pair of three-inch empty speakers, which is really good, and got a pair of full-frequency three-inch horn from another old master.

There were lots of LM386 left due to the recent experiment at school, which is really suitable to drive a three-inch horn.

LM386 audio is a kind of integrated power amplifier. With its low power consumption, update gain can be adjusted within the chain, large range of supply voltage, less external components and the small total harmonic distortion, it is widely used in tape recorder and the radio.

The audio source is a computer, so gain by 20 is ok. When gain by 20 times, the number of the external components is the least,and the circuit is relatively simple.

The power supply is powered by 18V.

The final effect is still satisfying, the sound can be large enough, which is enough to be used in the dormitory.


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