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I've a turntable and an hi-fi both without earthing to wall. Other source devices are connected to the same wall power strip, noone with earthing. The grounding between these devices is linked through the unbalanced L+R phono cable with the earth thiny wire. Noise is present and follow the volume level. But still present if the turntable is disconnected from cable. With same speaker I've also tried two different hi-fi system. I can't figure out how the problem can be generated by AC and how any DI Box can be help in this scenario..?

A 50Hz hum, in Europe

But how is one wire all by itself just out of phase always, I don't understand that.

Have you ever worked with armormax on systems for their vehicles? And also what do the microphones look like installed?

Thank you so much sir for your packaged information.

How and wher to purchase the MLRFIF filter? cant see it anywhere on line

This setup is opposite polarity, not that the signals are out of phase.

Very Informative

Nice

Waooo

Nice

Good luck sir 🎉

Thankyou for this amazing video

This helped me understand my sch notes! Thanks 😂❤

Hi, if I connect the guitar amp with a trs balanced cable into the console need a direct box?

Thank you so much sir for your packaged information

Thanks for the information

very educative. Thank you regards

This video is so amazing. 30 plus years in as a gigging musician and I learned a lot. I will def buy something from you all.

I solved my hum. I used two channels of my Mixer/Amp, plugged the left and right RCA cords from my laptop into separate RCA to 1/4 inch phono jacks, one in each channel.

Actually it's no the phase. It is the polarity.

tats the sound

👍

Does the ground wire not act as antenna picking up noise too?

Yet another incorrect explanation. Balanced means balanced impedances. Inverting a second signal is nothing to do with it. Videos like this just create more confusion.

there is one instance with laptops that will sound like a ground loop but it's not and that's noisy battery charge circuits or power supplies a.k.a. five dollar replacements off eBay or Amazon with no filtration and certifications. And if it is a genuine power adapter it's usually poorly designed charging circuit and hopefully you can get through the presentation on battery.

I have a balanced xlr that goes from a preamp pedal and into my computers soundcard which has a 3.5mm input. My question is....are line ins on soundcard balanced....unbalanced....or capable of handling either? Reason I ask is I have ridiculous noise and I'm trying to narrow down exactly where the issue is....without buying yet more things that ultimately have no or little improvement. I'm thinking a 3.5mm in line ground loop isolator might be the key....but I'm not certain.

this is as perfect an explanation as it gets

I just moved to a new house and I'm getting one hell of an annoying high whistle that comes and goes randomly while this has never happened before in my old house .. I'm using my exact same setup that I've been using for ages .. equipment are not faulty .. I've tried each and everything that might come to mind.. switched off every other device in the house to ensure no interference or anything and still.. same issue .. tried a different sound interface .. same issue .. different guitars .. amps.. pcs..the only way I can get rid of this shitty whistle is by making sure that none of the audio setup is plugged into the wall and just use an external power source.. my laptop's battery for example which means that it is 100% an electricity issue ... Got a technician and he didn't know shit and when he gave up he advised that it's an issue with my equipment which is bullshit ... I'm desperate especially cuz this stupid whistle makes its way through to my recordings which means I can't even work anymore ..(I record for bands and for my own music ofc) Any help

This video just helped me with a year long problem in my guitar setup. I had been chasing the problem, not getting results, and about ready to move out of my house because that had to be the problem thinking i had tried everything else. Thank you so very very very much. I added a studio monitor to my sound about a year ago and plugged it into an outlet on the other side of the room. Today I changed it to match where my amp is powered. Thank you so very much.

I think I’ll just use it as my new bass player… Mr 60hrz one note wonder..

Thanks ! That video was very basic, but very useful !

Too technical

Please advise where to buy like this

Thank you 🙂

YEEEEEEEEEE This was an amazing and easy to understand explanation of a balanced signal, Thank you! I was expecting to be going into the hole of why some headphones have larger impedance then others again.

Why the ball sound at the beginning is so freaking loud

I tried to phone this company but it looks like they are no longer in business.

I get unbalanced after a few drinks. How do I fix that balance?

Buy yourself a Furman conditioner that should clean up the noise. My brother put led lights in my room and cause all kinds of noise. I bought and installed the conditioner no more noise.

Excellent presentation + clearest explanations. --- I have never found an explanation for similar problems in a 2 wire (AC) 220V European circuits, though. Are those boxes identical in construction and use? Is AC filtering done the same way, since they don't have 3d prong for ground? I thing that Alectro is the place to get answers and... to shop. Bravo!

# 275 Thumps Down.. Really thumps up.. But Google AI...( Anal Intelligence) Will send it every day "3 time a day). Toooooooo ME. So forward Toooooooo Google'S imaginary CS To convert this to a Positive! Signed Amiable

Love the intro

What a great video. My set up is as follows - Macbook, connected to a wall powered mixing desk via a USB insert - in that mixing desk I have an XLR condenser mic connected, using another wall powered compression unit, connected through an insert on the same channel as the mic. No problems, no ground loop. The problem began when I tried to do something very simple, which was add a 3.5mm TRS to Dual 1/4" TS cable between the mixer and my DSLR camera,, so that the mic runs through the camera (for better lip sync on live stream/conferencing). Instant ground loop and very loud hum and buzz and I couldn't work out why. Now I know why. I'm using my DSLR camera as a webcam, which is also wall powered with a dummy continous battery - when connected to the mixer, this means I have two different wall powered devices running through it (the compressor and camera) which is obviously causing the loop (with the USB connected wall powered Macbook which may or may not be adding fuel to the fire). I've ordered one of those decoupling boxes and will expect that this will work, when connected between the camera and mixing desk. Fingers crossed.

Excellent video, thank you. Wish I had this knowledge years ago.

Thanks

Tha js

All In the same damn room for me.. I’ll be playing my ekit which I can finally do at night now turned down and something will come unplugged and the loudest HUUUUUUMMMMMMMMMM shakes the walls. Really starting to get annoying now…

this is my favorite video on youtube. thank you

Any idea for hum caused by connecting a laptop to USB Audio Interface which supplies phantom power to a condenser mic