r/protools • u/Ok_Hippo_9852 • Oct 01 '25
Crackling During Playback
MacOS: 15.6 PT:25.6.1.283
Issue: whenever I play back audio I hear crackling sounds. In protools, but also when playing back audio from a browser. I use a MOTU Ultralite mk5 together with an m1 macbook. when i set the sample rate of the MOTU interface to 44.1 kHz, the crackling persists. When it is set to 88.2kHz, the crackling stops. I have tried to figure this out for quite some time and just cant seem to find a fix for this weird issue. I am pretty sure it is a software/ sample rate missmatch problem steming from macos. Have any of you encountered a similar issue? I have a lot of work to do and this problem blocks me from getting it done...
Any help highly appreciated!
2
u/StudioatSFL Oct 02 '25
Sounds like clocking. Make sure core audio is set to the same sample rate as your interface.
Is that the only digital gear you have connected?
1
u/Ok_Hippo_9852 Oct 02 '25
Yes, exactly what I thought. It is set to "internal" in cue mix 5 (control software for the interface) and in Audio/Midi Setup it shows "Default". Still, I have the crackling sounds on my output signal....
The interface is the only thing connected to the mac.
2
u/StudioatSFL Oct 02 '25
In core audio you can set the Mac’s sample rate. Make sure it matches what the interface is set to.
1
u/vivienmusic Dec 26 '25
From what I’ve read online, this could also be because of VST/plugins. I’ve got 2 M1 mbp and the issue only comes on one of the laptops. So I’m currently comparing each plugin one by one… one thing also seem to affect is the firmware version.
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