Get Free, Friendly, Expert Advice
Call 1-888-352-9466 or email

Designed and Manufactured in Canada Since 1980


Wall'O'Fame
Solarrdadd's 7.1 Apartment HT!
A promise is A promise... Axiom's second home
AxiomAudio Blog

Insider’s Sneak Peek: AxiomAeris

Axiom’s New Computer Speakers

Blind Listening Tests

Who's Online
1 registered (CV), 55 Guests and 7 Spiders online.
Key: Admin, Global Mod, Mod
Financing
Forum Stats
13,380 Registered Members
11 Forums
23,218 Topics
411,162 Posts

Most users ever online: 378 @ 02/24/13 04:33 PM
Top Posters
Ken.C 17932
pmbuko 16357
SirQuack 13357
CV 11473
MarkSJohnson 11198
Meanwhile On Facebook
Topic Options
Rate This Topic
#149474 - 10/15/06 06:26 PM Sub emits low hum/buz
jonn21 Offline
frequent flier

Registered: 08/01/05
Posts: 16
Hello,
I have the epic midi 125 system with the ep125 sub. I have had this system for many months now and just noticed a low hum from my sub. What can I do to fix this buz sound...

thanks,
jon

Top
#149475 - 10/15/06 06:31 PM Re: Sub emits low hum/buz [Re: jonn21]
jonn21 Offline
frequent flier

Registered: 08/01/05
Posts: 16
I got rid of the buz. I had to unplug my tv audio from my receiver. I guess I can't have stereo when watching tv...that sucks.

Top
#149476 - 10/15/06 06:50 PM Re: Sub emits low hum/buz [Re: jonn21]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13357
Loc: Iowa
There are other options, that I'm sure others will offer advice. I don't have such problems with my EP500 and front projection environment.
_________________________
M80s-VP180-QS8s-EP600-2xEP350 Denon3808 Outlaw7700
M22-OWM22-VP100-Denon2805
Audio Nirvana

Top
#149477 - 10/15/06 08:02 PM Re: Sub emits low hum/buz [Re: SirQuack]
Ken.C Offline
shareholder in the making

Registered: 05/03/03
Posts: 17932
Loc: NoVA
Ye olde ground loop problem. Others will be along shortly with advice...
_________________________
I am the Doctor, and THIS... is my SPOON!

Top
#149478 - 10/15/06 08:47 PM Re: Sub emits low hum/buz [Re: jonn21]
Wid Offline
axiomite

Registered: 06/22/03
Posts: 6754
Loc: The Peoples Republic of Il.
Here is an article by Alan that covers ground loops. As a temporary fix you could try a cheater plug. If you try this make sure not to connect it to the cover screw, you want to lift the ground.

Top
#149479 - 10/15/06 11:59 PM Re: Sub emits low hum/buz [Re: jonn21]
JohnK Offline
shareholder in the making

Registered: 05/11/02
Posts: 10487
Jon, the fact that unplugging the TV audio got rid of the hum indicates that it's most likely a ground loop related to a cable TV input. You can buy one of the cable ground loop isolators. In the meantime, you can try to partially remove the RCA plug so that the center conductor still makes contact and transmits the TV sound, but the outer shield doesn't make contact and carry the hum into your receiver.
_________________________
-----------------------------------

Enjoy the music, not the equipment.



Top
#149480 - 10/16/06 10:40 AM Re: Sub emits low hum/buz [Re: jonn21]
alan Offline

connoisseur

Registered: 01/29/02
Posts: 3200
Loc: Toronto/New York/Dwight
Hi jonn21,

As JohnK mentioned, your incoming video signal from cable TV is almost always the source of subwoofer/TV/receiver ground loops.

Here is a link to Axiom's ground isolator, which goes between your incoming cable-TV feed and the set-top box or your TV's cable input.

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

The ground isolator causes no degradation of digital or HD digital services. However, it cannot be used with satellite TV feeds of any kind.

By the way, your cable system may supply you with one of these if you complain. I've heard of one that did.
_________________________
Alan Lofft,
Axiom Resident Expert

Top

Moderator:  alan, Amie, Andrew, axiomadmin, Brent, Debbie, Ian, Jc 

Home  |  Corporate Info  |  Products  |  Message Board  |  FAQs  |  Warranty  |  Site Map  |  Privacy Statement   |  Contact Us

©2015 Colquhoun Audio Laboratories Limited
All Rights Reserved.