Why is my powered subwoofer humming?

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 direct result of being plugged into an AC wall outlet. Usually, all it takes is a change in the way the subwoofer connects to power.

How do you fix a humming subwoofer?

If the subwoofer is plugged into its own outlet, plug the subwoofer’s power cord into an outlet shared by the other components. Use an extension cord if necessary. If the hum persists, and your system includes a cable TV, disconnect the cable line. If the hum stops, install an isolation transformer on the cable.

Is subwoofer hum bad?

If it still hums when there’s nothing going in, your issue is probably with the sub, which needs repair or replacement. (2) Induced Noise: Induced 60-Hertz noise is hum that comes into your audio system through contact or proximity to power circuits or cables.

How do I stop my car subwoofer from humming?

The humming noise itself can get louder with the speed you are driving or can apparent only at idle. Check Your RCA Cables. These provide the music signal from your car stereo right into your amp, its job is to then covert it into a bigger louder signal.

How do I know if I blew my subwoofer?

Subwoofers are blown when they either receive too much power or too much of a distorted signal. You can find out if your subwoofer is blown by listening to the sound, reviewing the movement of the woofer, and using a multimeter to find out if the coil is blown.

How do I know if my subwoofer coil is bad?

Signs of a blown subwoofer

Excessive power. Excessive power is the reason why many subwoofers get blown in most cases.
Listening to the sound. One of the key signs of a blown sub is poor sound quality.
Physical inspection.
Voltage.

Why does my subwoofer hum when I plug it in?

Ideally, all ground points have zero volts between them. When a ground loop problem exists, you’ll hear a low frequency hum when you plug any audio or video components — including subwoofers — in the electric outlet. This hum is caused by the ground voltage potential differences among the system components, power cords and audio/video cables.

Is there such a thing as a humming subwoofer?

Click to expand… Yes, it hums when only plugged into socket with nothing else connected. Its a PURE LIFE 4/10 SUB 10. What you have is a ground loop hum (google it). To be sure it’s definately the sub take it to a friends / relatives house and try pluggin it in.

Why does my subwoofer make a 60 hertz noise?

Induced 60-Hertz noise is hum that comes into your audio system through contact or proximity to power circuits or cables. While this can happen internally in your devices, the more common cause is bad routing of cables.

Is there a problem with my subwoofer power supply?

A cleaner power supply is unlikely to do much here if the problem is occurring inside the subwoofer itself.

What makes a Polk Audio psw108 subwoofer so good?

By using a state-of-the-art Klippel distortion analyzer, Polk engineers were able to optimize the woofer’s motor structure, voice coil alignment and suspension bringing you the best possible performance even at extreme listening levels. . . . . The PSW108 fills in the bottom end of your home theater system.

What does the phase switch on the psw108 do?

Volume Control: The PSW108 has a rotary volume control to adjust the volume of the subwoofer relative to the other speakers in the system. Phase Switch: The subwoofer’s phase switch allows you to select 0-degrees (normal) or 180-degrees (reverse).