Ho ho ho have a good Thursday fellas

sometimes the Toroidal transformer located within the amp/s vibrates and the central bolt needs to be tightened. This happened to my 7 Channel Amp and now its whisper quiet, even with my ear right next to the speaker.

Before I purchased my arcam avr20 with matching power amps to drive my Sonos Faber sonetto front stage speakers which is part of a 5.2.4 configuration, I wanted to address the noise coming my cables first! Even though I've changed my cables multiple times it was only when I used shielded cables did my interference noise finally go away! One's got to remember unshielded cables act as antennas for attracting RF (cell phone signals, smart devices, Bluetooth, neighbours Wi-Fi etc and of course the longer the cable the better the antenna! Probably explains why when I used to disconnect my cables of length my noise floor used to be reduced! If one is running a multi channel setup one can go ahead and put this to the test... Watch a movie for 5 to 10 minutes then sit for a couple of minutes and listen to the noise floor then switch the setup off disconnect the rears and height cables from the back of the AVR and repeat the process. Here's a short 3 minute video of what I had to go through... kzread.info/dash/bejne/qauJksZsfsm4gdo.html It was a lot of work but at least now when watching a movie and the silent scenes come in, silence is exactly what I hear. 🥳

Jeremy, before change your speakers cables, try connecting one speaker with 2ft cable next to your rack directly to you amp. Thats to know if it is your speakers cables or something else

@Techthusiasm

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Yeah, I'll be pulling one of my living room in-walls over the Christmas break and taking it downstairs for a shorter/different cable connection to see. That'll be the ultimate test I think. I hope I get the results I expect...

Been there. My speaker wires in the wall where too close to a/c power picking up a hum.

@Techthusiasm

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Yeah, I think this will be the ultimate problem. New update video coming soon with my (hopefully final) test.

I ran into this a few weeks ago. Severe buzzing in all my speakers. Turns out it was a wall wart for some Phillips Hue lights behind a TV... in a totally different room than the AVR (same breaker I believe though). I fixed the issue, but now going down the rabbit hole of HumX, power conditioners, voltage regulators, etc. However before and now that I've fixed the cause my speakers are dead silent when the AVR warms up... so not sure I need to go too heavy into it.

@Techthusiasm

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So many folks on my hum videos have commented like this, where something else plugged in or on their house power was interfering. Pretty wild.

Youthmans got it again its what its got connect over that whole circuit , if you own a house 100% just run a new circuit for your system

@Techthusiasm

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My gear set runs on a dedicated 20 amp circuit. I recommend that for sure!