Hello to everyone.
I am experiencing a strange noise coming out from all of the speakers when adjusting sound level no metter if I do it from the knob of the receiver, the remote control or through the android application that controls my av receiver. I have a Yamaha rxv 585 with speakers focal sib and cub3. I bought them all together one month ago. All new. I have the connection done with a 2x4mm copper cables.The receiver is set to 5.1 channels, but this seems to doesn't matter, because the problem ocuurs in presence assign, bi amp... For example, when I adjust the volume I hear like a bumb or pulse/bass sound that corresponds to each level increment/decrement of the sound. It's something very weird and I am not sure If it existed at the beginning. What I know is that I noticed it several days ago. If I long press down in no matter what direction you can hear it, almost like the changes in db have a sound on their own and you can hear it ticking up or down. In order to hear it from the speakers I really have to stick my ears to them. It's barely noticeable. With the subwoofer is more pronounced. However in order to hear it I have to be listening a non bassy music while changing volume and to pay attention. Going crazy already. The supposed problem is from all the sources ( HDMI, USB, net radio...) And it is clearly heard when for example I am on net radio or USB and I pause or stop the song and start to adjust the volume. This is how I noticed it. So I am starting to wondering if the sound control of AV receivers emits a sound or a noise on their own or it is abnormal phenomenon. Any suggestions or advice would be very appreciated by me. Thank you very much!