[Zane Tito]

Hey guys take a look at my vid...makes a loud humming noise when I just turn it on with no inputs. Want to try fix it by myself

I have a link on youtube

 

[fatbottom]

Either ground loop or faulty plate amp. Try plugging it in to another outlet. Also maybe try it another house if it still hums then plate amp is faulty.

Is it humming from the cone or plate amp itself?

 

[Lozin]

I had the same problem. I found out it was the power cord. I ended up putting a ground bypass on the end of the power cord and it solved the problem.

 

[fatbottom]

I had the same problem. I found out it was the power cord. I ended up putting a ground bypass on the end of the power cord and it solved the problem.

That's dangerous I believe

 

[Lozin]

Really. Why is that?

 

[fatbottom]

this?

http://en.wikipedia.org/wiki/Ground_lift

 

[Lozin]

I used to have a really bad ground loop hum. I have 2 subs in my setup and sub #2 has always been hum free but sub #1 always had the hum. I originally thought it was the cable going to my amp. I replaced it and it solved about 80% of the problem. Then I was playing around with the power cord and the hum would stop if I moved the cord the right way. I looked it up and there were guys saying that they broke the ground off of their subs and it solved the problem. I new I had a spare ground bypass plugs lying around so I tried one and it worked.

 

[muzz]

My Denon AVR doesn't even have a ground pin, neither do my HDDVD or BD players....the only thing that does is my iNuke3K.
I didn't see the video, and I don't know how old that sub is, but if it's really old it could have leaking filter caps.

 

[Lozin]

Sounds like what I need is a ground loop isolator.

 

[Zane Tito]

Whoops thought I had posted the link...i made a YouTube clip but it's not letting me post any links

Hopefully the Imgue works

 

[Zane Tito]

Will just post. 3 more times

 

[Zane Tito]

I uploaded it to fixit on reddit but had no luck

 

[Zane Tito]

It is Canton Karat Powered Subwoofer

 

[Zane Tito]

And where are the links

http://m.imgur.com/a/94Gbu

 

[Zane Tito]

And the vid I loaded on YouTube....

 

[Zane Tito]

Any ideas

Any thoughts

 

[muzz]

I'd try a cheater plug like this, and see if it still hums, if it does, the amp has issues, probably in the PSU filter stage, although I could easily be wrong on where the issue lies.

http://en.wikipedia.org/wiki/Cheater_plug