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Noise coming from subwoofers and centre channel

Hi,

I have a noise/hum in my subwoofers and only one speaker, the center.

When listening music only, the noise is really low but when watching a movie with the projector and madvr processor, the noise become louder.

 

Someone have an idea, something common?

Thanks in advance for any help.

vampat
erik_squires
16,057 posts
 

OP: Well my recommendation of an HDMI isolator is still the best way to go, but another HDMI cable may help and be a cheap solution.

It would really only help if the ground was significantly better... so for sure dont' spend money on boutique cables.  Buy an affordable one that's as short as possible but looks well made.

vampat OP
16 posts
 

For the HDMI isolator, how it would works. My HDMI is connected between my projector and processus and then, it to my AVR.

Where do we connect this isolator?

Thanks

vampat OP
16 posts
 

The HDMI isolator seems to be very expensive more than 1000 $ CAD.

Also, i hope those isolator are compatible with Dolby atmos, HDR, 4K etc....

vampat OP
16 posts
 

Could something like this possibly solve the problem?

 

FIBBR FIBBR Câble à fibre optique HDMI 8K 48 Gbit/s ultra haut débit 8 K 60 Hz 4 K 120 Hz 144 Hz HDR/eARC dynamique compatible avec PS5, Xbox Series X, PC, TV (5 m) : Amazon.ca: Électronique

erik_squires
16,057 posts
 

OP:  Some of my recommendationsi were well under $100

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