Hey Sulthon. I am also experiencing a crackling/popping noise. I thought like you that the speaker was the culprit, and upon changing both left and right speakers, the crackling persits!...rats.
For the nature of my case, the crackling starts/persists when I am in a warmer room or in my bed using the laptop, and it stops when the computer is in a physically cold space like in my basement or on a cool counter surface. So that has lead me to the deduction that the problem is temperature-related.
Temperature could increase or decrease with the physical environment its in, but also when the computer is demanding a lot of processing power,
I've done some research and I think I've narrowed it down to the battery, thermal paste connections, and fan cleaning.
There is a phenomenon with these batteries where they overheat, swell up and cause a gas exchange. [link|https://www.youtube.com/watch?time_continue=282&v=TawWT7BQx7w&embeds_referring_euri=https%3A%2F%2Fwww.google.com%2Fsearch%3Fsca_esv%3D77c277a80b1cb60%26sxsrf%3DAHTn8zqh4vc4Xhlv-O1Qz7DzTd_flXj4Iw%3A1738017515321%26q%3Dapple%2Bmacbook%2Bba&source_ve_path=Mjg2NjY|See here.|new_window=true]
Overheating is a definite concern for computers in general and has been for a long time, this is no exception. Ensuring proper thermal paste connections is crucial for heat dissipation. I know mine will need to be reapplied.
A lot of forums were suggesting that the HDD could be a culprit due to the energy demands they require but since we have an SSD in this model, I do not think this crackling sound is coming from there.
I will change the battery, re-apply thermal paste and clean the fan, and hopefully the sound will stop!