2. speakers
  3. 192004-173740

Faint buzz in speakers

There is a very faint buzz coming from speakers with amp on, but with no music stream playing. Can only be heard with ear right up to drivers. No buzz with amp off or muted. Decent amp & cabling. Is this faint buzz likely still there under music when it’s playing? Numerous noise reduction devices deployed including dedicated circuit, robust grounding, balanced power transformer, various filters. Thoughts?

jmfinney
andrewkelley
275 posts
 

Check the bug zapper in the garage 

carousel's avatar
carousel
3 posts
 

Before tackling the audio interconnects, disconnect any video or ethernet devices. An RCA out to a TV that has a satellite cable in or an HDMI from another device plugged in elsewhere can be the problem. The additional shielding on “better” ethernet cables, like CAT-7 instead of CAT-6, can also be the problem. Ethernet is itself by design fine. But the shielding on a cable can be the problem...

Re: bug zapper comment above... yes, keep it off the house ethernet ;-)

jmfinney OP
82 posts
 

Thanks to all who’ve chimed in about the buzz in both speakers. Perhaps it does sound more like white noise than a buzz. No, it is not audible from my listening position 8 ft away. In fact, it is so faint you have to place your ear right up against the cone to hear it. I don’t know which is more annoying, the noise itself or the fact that I’ve been unable to track it down. I’ll be sure to  try your suggestions this weekend when I have the time. 

Post removed 
mickeyb
573 posts
 

I had the same problem with a krell amp I had. 
I just took care of the problem. I sold the amp. It wasn’t jiving with my ac current in my house. It was fine for the guy I sold it to. 

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