Method for fabricating a frequency division small speaker circuit ----- Speaker DIY

Making method of frequency division small speaker circuit, Speaker DIY Keywords: Division small speaker circuit production method Method for fabricating the frequency division small speaker circuit The PAA2 provides an instant display frequency response, so it can be immediately seen to change the frequency response of the replacement element, and the response of 1 to 2 kHz is tested is slightly higher, and it should be improved. I don't say it. I use PSPICE to simulate it. I will get a corrected circuit as shown below. Among them, the inductance self-winding, the capacitor purchase several modified values ​​nearby to fine modulation, resistance to adjust the decrease Using power-type variable resistors, this tuning process takes 3 months, constantly in comfortable room temperature, and vocal tests determine that no longer modification, the modified components are not much, I believe the original author used The material and the kit should be some error, or the material and sound absorbing materials of the wooden box, otherwise it will not only modify a little bit. However, it is necessary to remind some DIY that does not have too many experiences, must have a pair of reference equipment to compare, or you have to hypnotize your own voice is right, you can suggest buy a pair of full-length speakers and a good microphone, To conduct test and tuning, this way will also pay me a lot of tuition. Figure: 173.6 ° C very high temperature. At the beginning, it is not recommended to use the vacuum tube to tune, you can listen after the tuning is completed, because he has a unique voice sometimes cause misjudgment. . R15, R14, R13 are inductive DC resistors. The modified sputum circuit diagram, attenuated 2DB near 1kHz, so that the overall listening can be more comfortable to listen to 4 to 5 hours. It may be very subjective, how to use objective methods to explain it, I want to ask my friends to listen to the music teacher, they all say that they are so good, their family is can't be harmed by the previous sound every day. When the reference, the speaker will take a while, let them listen to it, I judge how to listen to the first use of people, the second use of piano, because children learn the piano directly with the microphone radio, think it is more objective And anyone can immediately know the difference, although this is still a little bit of 1 ~ 2dB, but only for the middle sound part, the treble is over 3k ~ 15K smoothly 15K or more. Can see the instrument's display, the following comprehensive friends comments are as follows: (1) The low speed is fast. (2) Will people always want to listen to music, and music is very good. (3) The sense of space is very good.

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