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04-26-2020, 03:54 PM
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#1
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Human being with feelings
Join Date: Dec 2019
Posts: 19
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Studio Monitor Noise
Hi everyone,
Trying to solve a problem with noise when I have my studio monitors connected to my computer. How do I fix this?? Better power strip? Better Cables? Ground Loop? Better interface?
I have JBL LSR 305 speakers, Macbook Pro, Caldigit TS3 Plus USB Hub, apogee one (1st gen).
Thanks.
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04-26-2020, 04:08 PM
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#2
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Human being with feelings
Join Date: Jan 2017
Location: Los Angeles
Posts: 1,161
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Is it hiss, hum, digital interference?
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04-26-2020, 04:18 PM
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#3
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Human being with feelings
Join Date: Jan 2014
Location: Ontario, Canada
Posts: 1,619
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Quote:
Originally Posted by dave111
How do I fix this?? Better power strip? Better Cables? Ground Loop? Better interface?
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Hmm.
You could try sharing a video or sound recording of the problem you're trying to diagnose.
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04-26-2020, 04:23 PM
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#4
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Human being with feelings
Join Date: Dec 2019
Posts: 19
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It's different sounds. There is a high pitched tone coming through right now. When I turn on my external hard drives, I can hear them spinning up. When I charge my phone on the wireless charging pad, which is plugged into the usb hub, I can hear a weird sound. When my laptop is charging through the usb hub, and not by it's charger, there is a static sound, like a radio that's not tuned into a station.
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04-26-2020, 04:38 PM
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#5
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Human being with feelings
Join Date: Dec 2019
Posts: 19
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it wont let me upload the video - says a security token is missing?
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04-26-2020, 04:41 PM
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#6
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Human being with feelings
Join Date: Dec 2019
Posts: 19
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04-26-2020, 05:51 PM
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#7
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Human being with feelings
Join Date: Jan 2017
Location: Los Angeles
Posts: 1,161
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That's a lot of potential sources of noise/interference in a small space.
Did it start recently? Maybe some filtering capacitors are going bad.
Have you tried moving the cables around or re-orienting the interface? If the noise changes that's a hint.
If it's interference entering the interface directly I would imagine a metal-cased interface would fare better. Not certain, though. I have an AudioBox USB that has a ton of digital noise, audible on the input and always in the headphones even with the level at zero.
https://drive.google.com/open?id=1QJ...twHiyHtmysrDl1
Could also be coming through the USB power lines.
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04-26-2020, 11:19 PM
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#8
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Human being with feelings
Join Date: Dec 2019
Posts: 19
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ugh its a total mess haha. i recently moved, got a bunch of new gear, and set it all up. then >> noise.
interesting idea, though. might help to just add some space in between the different devices somehow.
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04-27-2020, 02:18 AM
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#9
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Human being with feelings
Join Date: Aug 2007
Location: Near Cambridge UK and Near Questembert, France
Posts: 22,754
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What country do you live in? Could be as simple as the usual folderol that I used to get when I lived in the USA. Many older houses there have "interesting" electrical systems, especially when it comes to grounding. Sounds like you have a combination of RFI and mains interference going on. And of course if your equipment is also plugged into different mains outlets, that can have a bearing on the situation.
Good luck!
__________________
Ici on parles Franglais
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04-27-2020, 03:57 PM
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#10
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Human being with feelings
Join Date: Dec 2019
Posts: 19
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thanks. I live in the USA. Renting an old house with questionable wiring. I ordered a thing to test outlets to makes sure they are grounded and working properly. I will test that out when it gets here.
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05-01-2020, 05:50 AM
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#11
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Human being with feelings
Join Date: Nov 2018
Posts: 43
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05-01-2020, 07:45 PM
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#12
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Human being with feelings
Join Date: Jun 2006
Location: Australia
Posts: 3,738
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It's almost always that.
Are you using balanced cables to connect the audio interface to the speakers? Are there any unbalanced devices/cables connected to the audio interface inputs?
The first thing I'd be looking for is an unbalanced connection causing the problem, followed by a damaged plug or cable not making a proper connection.
Exactly what gear do you have, and how is it all connected?
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05-11-2020, 08:51 AM
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#13
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Human being with feelings
Join Date: Aug 2007
Location: Near Cambridge UK and Near Questembert, France
Posts: 22,754
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(grin) The first house I owned in Nashville was very old and had bare wires held in place with ceramic insulators, NAKED behind the lath & plaster walls. No earth/ground at all. Easily fixed, but scary as hell. Imagine drilling a hole to hang something and hitting that naked hot wire!
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Ici on parles Franglais
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05-11-2020, 10:15 PM
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#14
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Human being with feelings
Join Date: Jan 2020
Posts: 1,927
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+1 on the USB grounding noise. I'd start by disconnecting all USB audio peripherals just to rule them out.
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05-14-2020, 06:48 AM
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#15
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Human being with feelings
Join Date: Aug 2019
Posts: 395
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bad bad bad
ground loop is 60hz. if u can 'hear the hd tro the spkrs '
yr kinda F**kd (somewhere)
this is not DIY
call SUPERMAN
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05-21-2020, 12:02 AM
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#16
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Human being with feelings
Join Date: Jun 2006
Location: Australia
Posts: 3,738
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Quote:
ground loop is 60hz. if u can 'hear the hd tro the spkrs '
yr kinda F**kd (somewhere)
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Ground loops can absolutely cause other types of noise like that.
Still haven't got an answer from the OP about exactly how things are connected.
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05-21-2020, 03:38 AM
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#17
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Human being with feelings
Join Date: Jan 2020
Posts: 680
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If ground loops are heard at 60Hz in many countries working off mains power your ears are out of tune!
A bit parochial eh, @Beats?
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05-25-2020, 08:00 PM
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#18
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Human being with feelings
Join Date: Dec 2010
Posts: 3,826
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Just buy an isolator, they are dirt cheap, they will fix 99% of problems.
http://orchid-electronics.co.uk/dual_isolator.htm
I use these, but you can get a bunch of others.
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