Buzzing Sound ONLY when Increase or Decrease the volume of the speakers

[angelion]

It's getting rly annoying that whenever i increase or decrease my volume from volume control of the speakers this buzzing sound comes up, as soonn as i stop this sound stops too ,when i plug my headset with 3.5mm to the extension of volume control of the speakers and icrease/decrease volume it's just perfect.
All drivers are instealled and updated
This Sound is only coming form Twitters the Subwoofer its fine
My motherboard is G41m Combo which i use the onboard sound card and Speakers are 2.1 Edifier s330D they are perfect exept this buzzing sound and i dont think it's speakers problem.

The only thing that i can think about why this happens is that a power adapter and some power cables from Monitors are near to the cables of the speakers(20cm),i tried to relocate 1 speaker to check it out but same thing happened
Any suggestion is welcome.
Thanks

 

[angelion]

It is because the volume controller has damaged and it is creating noise and since noise will be in higher frequency that's why twitters are generating that noise and head sets are not generating that noise since there is no separate circuit that amplifies high frequency sound

I forgot to mention that it's only sounds like that when i increase/decrease the volume control kinda fast instead of when i slowly increase it's fine.....

 

[angelion]

As i said before problem with volume controller just use it slowly and i am sure after some you will get the same noise or volume will stuck at one specific point

Mhhh i see i thought an another way tos olve this by setting the volume to the maximun i play songs which 70% of the volume control and adjust the sound from windows...

Note: while i was checking the cables on my IO shield i noticed that if i move the 3.5mm cable while it's inserted this buzz noise is continious....perhaps a bad cable could be the problem i guess?