The microphone's broken sound has nothing to do with the distributor. It should be that the dynamic range of the microphone's voltage amplification stage is too small, causing clipping. Its voltage gain can be reduced, or a nonlinear limiting circuit can be added. Adjusting the splitter will not make the low frequencies lower, it will only affect the signal amplitude and phase near the distribution point. The resistor on the distributor is used to adjust the speaker sensitivity of low frequency, medium and high frequency, and is generally connected in the high-frequency speaker circuit (high-frequency speakers tend to have higher sensitivity and need to be attenuated; in addition, the high-frequency power is small, and the attenuation resistor generates It also has less heat). The question about 2uf capacitor has been answered on the first floor, correct answer.