Getting a Buzz - Useful Tip?
Posted: 04 Dec 2013, 12:04
For those plagued by an annoying buzz from their sub (not at all nautical)...
I have one of these home cinema setups with an amp, speakers, sub, PVR etc and started getting a horrible buzzing in the sub. After much reading on the audio forums it seemed that the most likely cause was an earth loop feedback from two devices completing over the same earth. All sorts of potential resolutions, some Heath-Robinsonish and others downright dangerous and often expensive were suggested. Anyways after thinking b*gger me this is going to be tricky to solve I set about reading a bit more and frankly there was so much conflicting advice I was close to giving up. I'm delighted to say that the buzz is now Buzz Yesteryear and has disappeared from my system. For me the solution was fairly simple - I replaced the rather crappy cable I got with the sub for a Y cable with much better shielding (an improvement but not a cure) and remembering one of the key principles of induction I rearranged the power supply for the sub so that the power cable ran in a different direction to the audio cable with the result that the buzz has completely disappeared.
So there you go - a useful tip, possibly!
Regards,
Chris
I have one of these home cinema setups with an amp, speakers, sub, PVR etc and started getting a horrible buzzing in the sub. After much reading on the audio forums it seemed that the most likely cause was an earth loop feedback from two devices completing over the same earth. All sorts of potential resolutions, some Heath-Robinsonish and others downright dangerous and often expensive were suggested. Anyways after thinking b*gger me this is going to be tricky to solve I set about reading a bit more and frankly there was so much conflicting advice I was close to giving up. I'm delighted to say that the buzz is now Buzz Yesteryear and has disappeared from my system. For me the solution was fairly simple - I replaced the rather crappy cable I got with the sub for a Y cable with much better shielding (an improvement but not a cure) and remembering one of the key principles of induction I rearranged the power supply for the sub so that the power cable ran in a different direction to the audio cable with the result that the buzz has completely disappeared.
So there you go - a useful tip, possibly!
Regards,
Chris