Topic: HELP!: Subwoofer Humming

[arthurallanj]

Hey bros. Patulong naman. How do you silence a humming subwoofer? Via method of elimination, I think it has to do with the interconnect. I tried powering up the sub without any connection, wala syang hum, but pag na connect na sya sa receiver, may konting hum sya. Even moreso if the receiver is unplugged. Any suggestions to eliminate this? Thanks in advance. 

[chris69ners]

Try this...

How to isolate annoying background hum

http://www.axiomaudio.com/tips_eliminate_hum.html

[markcrenz]

try the ff:
1. use a different wire. if the noise disappears you have a problem with your interconnect.
2. plug the sub directly to your dvd sub out. if the hum disappears you have a problem with your receiver.
3. connect the sub to a different pre-out of your receiver. if the hum disappears you have a problem with your receiver sub-out.

[Speaker Doctor]

Check the rca plug, unscrew it so you can see the connection inside. Baka may isang wire (positive or negative) na nagdikit.

Hope this helps.

Benedict   

[arthurallanj]

Thank you my brothers. God Bless. 

[markcrenz]

update us na lang pag ok na and what caused it for the benefit na rin ng other members 

[balibago]

Here's a quote from my Polk sub's manual:

Q : “ Why  does my system hum ? ”
A : “ B e c a u s e it d o e s n ’ t k n o w t h e w o r d s . ”

This is what passes for humor in the audio business. Here’s the real answer: If you have any electrical (50/60Hz) hum in your system you’re going to hear it clearly as soon as you hook up your subwoofer. Most hum problems are caused by “ground loops.” That is, the electrical grounds of the components in your system are not at the same electrical potential.

A very common ground loop source is cable TV. Disconnect the coaxial cable from your TV and/or VCR. If the hum goes away, the cable is the ground loop villain. In that case you need a 75 ohm ground loop isolator. This device attaches to your coaxial cable where it plugs into your VCR (or television). They’re simple to install and usually solve the hum problem. Find 75 ohm ground loop isolators at your audio dealer, Radio Shack stores, or online at http://shop.polkaudio.com.
Ground loops and hum can also be the result of faulty electrical wiring in your home. Consult a licensed electrician to evaluate and, if necessary, repair the AC wiring in your home.

Light dimmers also tend to introduce noise into audio systems. Remove them.

[Lancito]

Try using a cheater plug.

[hi-fi heroes]

Hey bros. Patulong naman. How do you silence a humming subwoofer? Via method of elimination, I think it has to do with the interconnect. I tried powering up the sub without any connection, wala syang hum, but pag na connect na sya sa receiver, may konting hum sya. Even moreso if the receiver is unplugged. Any suggestions to eliminate this? Thanks in advance. 

this happened to one of my DIY cables... it was the cable that was at fault... when i used the proper ohm rating... the hum disappered... hope this helps

[acebone]

Hi fellow PDVD members! Need a little help sana.  Recently, my subwoofer US Audio 510 is having a humming sound even just plugging it in the electrical outlet. I even haven't tried turning it ON yet. Worse, I'm smelling somewhat burnt wire or something though the switch is still OFF.  I tried to remove the RCA cable guessing it would solve the problem but the hum is still there.  I disconnected the plug immediately fearing it will cause fire.  My receiver, tv, and other electrical appliances are working fine.  I unplugged all my appliances and tried to plug again the sub while on OFF switch but the humming is still there.  Sira na kaya ang sub? It's still under warranty. I already returned it to the store the first time it caused problem pero pagdating dun sa store tumunog at ok naman sya. I returned home and worked fine for a day then after a week of not using it.  The problem occurred again.  Please help me esp. those who are techie and very knowledgeable about this types of problems. 

Thank you very much in advance!

[markcrenz]

bring it to the shop asap!

[acebone]

bring it to the shop asap!

Salamat bro. Dinala ko na agad nga din. Late ko na nabasa reply mo. Ang bigat pa naman.