Topmusicanswers
When no audio input cable is connected to the subwoofer input, if you have a hum then the subwoofer amplifier is defective. Power supply capacitors may be going bad, or something similar in the subwoofer amplifier.
- Why does my subwoofer hum when not in use?
- How do I stop my subwoofer from humming?
- Why is my subwoofer whining?
Why does my subwoofer hum when not in use?
Subwoofer hum or buzz is a low-level noise that can be present whenever a passive or powered subwoofer is turned on, whether or not it is playing. This 60-hertz hum is a result of being plugged into an AC wall outlet.
How do I stop my subwoofer from humming?
Disconnect the antenna cable from the receiver (if it is a receiver as source device) and check if the subwoofer is still humming. If it doesn't, you can use an intermediate sheath current filter (also available in our shop) to eliminate the hum loop and the problem is solved.
Why is my subwoofer whining?
One common cause of speaker whine comes from the vehicle's alternator. If the noise changes in pitch or intensity when the engine RPM changes, it's probably some type of engine noise, and interference from the alternator output is a likely source. ... Install a noise filter between the alternator and the battery.
