Imac Pro Sound Glitches

[odinbar]

I hear loud "cracks" popping every now and then but the sound returns to normal after that. The "cracking" sound is bit like if someone moved the audio jack in and out when the speakers are on. sometimes it happens often, sometimes it can take long time for it to happen again.
I have the latest system update OS X 10.13.6
tried to put the system from scratch , tried reset smc ,tried reset PRAM.
nothing helps.
who has a similar problem ? can someone find solution ?

 

[HDFan]

I hear loud "cracks" popping every now and then but the sound returns to normal after that

When does this happen? When the system is sitting idle, when playing a movie in iTunes, .... ?

Is the sound from the iMac Speakers, external speakers, somewhere else?

 

[odinbar]

When does this happen? When the system is sitting idle, when playing a movie in iTunes, .... ?

Is the sound from the iMac Speakers, external speakers, somewhere else?

this happens, when i watch video or listening music.
the cracking sound comes from imac speaker

 

[h9826790]

Sorry to hear that, but you may have more luck if post this in the iMac forum.

iMac Pro issue usually discuss at there, but not here.

 

[odinbar]

Sorry to hear that, but you may have more luck if post this in the iMac forum.

iMac Pro issue usually discuss at there, but not hear.

ok thanks