Solutions for Sudden Continuous Sound from Car Audio System

[TylerAnn]

Solutions for sudden continuous sound from car audio system are: 1. Turn the volume potentiometer to the lowest level. If there is a humming sound, it may be caused by the altered or insufficient capacity of the filter circuit electrolytic capacitor in the amplifier. If there is a loud humming sound when the volume is increased, it may be due to poor shielding of the audio input in the amplifier. Check and rectify the shielding issue; 2. Ensure all component casings are properly grounded, and use shielded cables for audio input lines with good grounding; 3. If there is a hissing sound from the speakers, it is mostly due to poor overall shielding or inadequate isolation between the primary and secondary windings of the power transformer. Try reversing the power plug or connect two 4700p capacitors with a working voltage of 250V in series at the power input, with the center tap grounded, to reduce noise.