My MacBook Pro 2018 version speakers are crackling.

You are not the only one with this issue. There's currently a thread at MacRumors MacBook Pro 2018 - Speakers Crackling | MacRumors Forums with a lot of people with the new Macbook 2018 and the same problems.

It happens on both MacOs and Bootcamp. Restarting the application or game often solves it, but as it happens within 10 minutes of starting a game, restarting it each time is just no option. There are people that have brought back their MBP and got a replacement but those had the same problems.

So it seems like it is a real issue, let's just hope that they can fix it through software.

I received my map 2018 15" today with the i9 inside and 32gb ram + 1tb ssd and same issue music, video, games, everything starts to crackle after a variable amount of time it seems that Bootcamp is the most affected MacOS didn't get it while I was working and playing music in iTunes until I started a Final cut pro to finish a movie project while exporting it started seems like a load issue?

Have a look at this article: Get help if the internal speakers on your Mac don't make sound

Check your sound settings

If you still can't hear sound from the internal speakers after updating your computer's software, check your sound settings.

First, disconnect any external audio devices from your computer. Also disconnect any cables from the USB, FireWire, or 3.5mm audio ports.

1. From the Apple () menu, choose System Preferences.
2. Select Sound.
3. Click the Output tab, then select Internal Speakers. If you don’t see Internal Speakers as an option in the Output window, contact Apple Support.
4. If the volume slider is set low, move the slider to the right and test again.
5. If the Mute checkbox is selected, deselect it and test again.
6. If you still don’t hear any sound, contact Apple Support.

Check the line-out port on your Mac

If the Output pane lists Digital Out instead of Internal Speakers, check the line-out port on your Mac.

First, disconnect any external audio devices from your Mac. Also remove any cables from the USB, FireWire, or 3.5 mm audio ports. Then check to see if the line-out port is lit by a red light. If it is, your Mac might need service.

I have a problem with mine as well! I got the 15" i9 version and it was very annoying how the sound would randomly cut-off with no obvious reason, went to the apple store got it replaced but still the same issue persists on the new one as well! (not as frequent though)
I'm currently in touch with Apple support and they have the sysdiagnose for both MacBooks and I'm just waiting for apple engineers to figure out exactly what is going on!!

This is probably a problem with the T2 co-processor as some news were quoting these had some other problems and they also control the sound. I have the same problem on my iMac Pro... sound cracking, doesn't matter if I'm using external or internal speakers, it happens on both so it has to be a chip issue. Just to clarify there are two scenarios: 1) Sometimes it is just momentary "one-off" crack or pop and then sound goes back to normal. 2) The sounds cracks and keeps cracking until the output is changed. Changing from one output to another momentarily resets the problem though, but doesn't prevent it from appearing again later.

This has been happening with my 2018 15 Inch i9 Macbook Pro as well. This has occured several times when I have been working in Premiere Pro. One moment everything is working perfectly fine and then the next moment the audio would crackle severely and make loud popping noises at max volume, even though my volume was set at below half. Once this happened, I quickly paused the audio lowered the volume to its lowest setting, save and then quit Premiere Pro, and then open up apple music and play a test song to see if the audio problem was still persistent. Once I quit Premiere Pro, the problem would go away, however, the audio on the macbook pro after is severely dampened and not as robust and strong as it usual is. This is very disappointing and frustrating for the amount of money that this model cost.

I'm also having the same exact issues with YouTube/Video playback where the audio just cuts out randomly on my 13" 2018 MPB (i5, 16gb ram, 512gb). I've also had a few occasions where the audio will get really "tinny" with absolutely no bass to it. Glad I'm not alone in the issue but quite annoying. I took it to the Apple Store and they wiped my computer and gave it back to me with a clean install and it worked while in the store but the problems persist. They offered to send it to repair if I came back but I don't want to send it to repair if I'm just going to get another board with the same issue.

Since you just got it replaced you could wait at least until the return period is almost over. I believe this to be a softaware problem and not a hardware one.

I’m currently in contact with one of Apple’s Help Desk operators. And they titled it “T2 tech: Audio is chuncky”! lol

So, it’s most likely, as everyone is guessing, related to the T2-chip.

I've found that I don't have to fully restart the app, just ctrl+tab or cmnd+tab (depending on OS) to leave the app and stop the sound for a second. I think it's an issue with continuous speaker usage so that pause fixes it (only temporarily ofc)

Edit: I've only noticed this problem while in Windows Bootcamp, macOS is perfect for me

I am also having this problem just today a little over 2 weeks from purchase. There are a lot of YouTube Videos starting to post what a cyclical crackle sounds like. Mine was when watching YouTube from Desktop For YouTube Application and then when playing from iTunes Apple Play.

I rebooted and now I cannot yet reproduce the crackle but I can return it and get my money back or keep it and hope its fixable in software or with Mac OS Mojave.

There have been lot of problems with the 2016 and 2017 models. Why go down that rabbit hole?

What to do?

Bende aynı problemi yaşıyorum ve bu soruna çözüm olabilecek bir deneme yaptım.
Sizlerde denerseniz işe ne kadar yarayıp yaramadığını görelim.

1- "Hey Siri!" dinleme özelliğini kapatın.
2- SMC Resetleyin.

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I have the same problem and have made an attempt to solve this problem. I can see how much it works for you.

1- "Hey Siri!" Turn off the listening feature.

2- Reset the SMC.

I get a different repetitive sound sometimes(half a second echo), like a microphone feedback crackling. But I had yours as well. If I stop the audio source(youtube) the echo repeats 3-4 times then stops. Restart solves the issue momentarily.

Have you found any permanent solution. Does a replacement unit solve the problem ? Mine started doing this the first day after using it.

That's the problem I have, netflix and youtube are gonna stop for a second or two, cut the audio then start again, with quicktime it's even worst, it's gonna stop the video completely, and keep cutting the audio for the next 2 seconds...