2. speakers
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High pitch buzz in speakers after adding some LEDs

We recently added some RGB COB LED strip 24V lighting to the HT. These are wall panels. When it changes colour from the DMX we are getting a high pitched buzz coming from some of the surround speakers just for a few secs when the colours are changing. I dont hear it but my AV installer does and some friends also hear it. This has never happened from any of the older LED lighting in the HT.

Is this a faulty power supply even though its brand new?

Thanks in advance...

murray24

Showing 4 responses by murray24

murray24 OP
4 posts
 

Ive had other LEDs in the HT for 15 years and naver had this issue, its just the new ones added has caused it. I was reading another forum where a guy had the same issue, he followed all the recommended test but nothing worked. He then decided to change the power supplies and bingo the buzz went away.... Do you think thats a good starting point?

murray24 OP
4 posts
 

The power supplys were really cheap ones from China without any covers for the 230V AC, I want to buy a better qaulity power supply regardless. 

murray24 OP
4 posts
 

All interesting comments thank you!

murray24 OP
4 posts
 

Something I discovered tonight is the buzz only comes from the left surround speaker, the right one is silent. There are two power supplies, one set of LED wall lights are on the left wall the other is on the right wall. There are many other circuits of LED lighting in the room that have been there for 15 years and all have been silent. Its just the "new" left and right wall LED COB lights we made that are causing the buzz, but only on the left surround speaker and only when the colours change to blue and green, it doesnt happen on red.

 

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