After using external speakers headphone jack no longer works

Hi, i plugged in some external speakers yesterday, the type that have two channel inputs (red and white) from my headphone jack. the speakers didnt seem to work, i thought it was the speakers that were broken, but now nothing will work from the headphone jack. the computer recognises they are there but there is no sound at all apart from slight fuzziness. it is nothing to do with the red light connection as ive had this problem before and its not that this time. i have reset vram and done the SMC reset too, but none of this has worked. the internal speakers work fine. nothing is muted, nothing is unbalanced. i have read everything single thread about similar problems and tried all the solutions i can find. can anyone help!!?? :'.(