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Sub-Woofer is Humming (1 Viewer)

Antonio_B

Stunt Coordinator
Joined
Oct 18, 2002
Messages
187
A few days ago I bought a new audio system and everytime i turn on the subwoofer i hear a loud hum.
I'm positive this hum is generated by some ground loops signals from the CATV.

Do you guys have an idea how to stop the hum?

Thanks in advance!
 

frank manrique

Supporting Actor
Joined
Sep 15, 1999
Messages
798
Try "lifting" the ground pin on the subs' power cord--if it has a three-prong plug, that's--with an adapter (cheap at a Home Depot near you ;) ).

If that doesn't stop the hum then try connecting all of your components in the SAME AC power source outlet (s) regardless of whether they have 2 or 3 prong plug power cords. Perhaps that might do the trick. :)

Good luck on your quest!...

-THTS

"...hi, my name is Frank...and am an SVS bassaholic..."
 

Ryan Tsang

Second Unit
Joined
Sep 23, 2000
Messages
372
I just dealt with this. My system connects to a Tice Solo Power conditioner. The wall outlet is shared with a halogen torch lamp. After some detective work, it turns out that the lamp was generating this hum in the sub and at the components only at the low setting. Off and high there is no hum. It's not loud like your though.
 

Antonio_B

Stunt Coordinator
Joined
Oct 18, 2002
Messages
187
Thanks for the replies!

I have no idea why and how but all of a sudden the hum disappeared yesterday afternoon.

Let's hope it doens't come back...
 

Jackson L

Stunt Coordinator
Joined
Nov 13, 2004
Messages
69
It is probably some sort of interference. What kind of cord are you using? When I bought my sub I tried using a home made cable made of lamp wire. Those cables work great for amplified signals but not for line level signals such as a sub. If you don't have a shielded cable you don't have to go spend $40+ on a "subwoofer" cable. You can buy RG-6 cable and a couple of adapters like THIS at RadioShack (couldn't find the latter on the site). I paid a total of $6 for my 20ft. cable and it works great.
 

Antonio_B

Stunt Coordinator
Joined
Oct 18, 2002
Messages
187
Dude now the sub is not working...

Maybe a blown fuse?There's power going into it but there's no sound.

Because I heard you can blow up a fuse by disconnecting the RCA cable from the subwoofer when it's "ON".That's exactly what i did(if not many times).I have to bring it to the store now to have it checked....

:thumbsdown:
 

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