Old speakers make weird noise

[Omer David Sivan]

Hello
I have a problem with my speakers..
I found some old speakers and i wanted to use them on my new pc.
But when i plug the electric cable to the wall plug it makes weird noise (hmmmm) even if its not connected to the pc.

If someone could help me with this that would be great!

Details:
Theres 2 speakers with 1 puffthingy in each, and one of the speakers is the main one (i opened it and looked) and have all the hardware in it the other one is connected to the main one.

 

[Ralston18]

Operative word: "old".

"puffthingy"?

Make, model, and speaker specs would help.....