Originally Posted by: kill em allyesterday I ran my amp into a sound system for a school presentation ...[/QUOTE]
What kind of amp? Tube or transistor? How did you connect it? What did you connect it to? Did it work all right for that presentation?

Originally Posted by: kill em all... then this morning I was jamming before school and I heard a loud scringy noise. ...[/QUOTE]
Uhh, what does a "scringy noise" sound like?

Originally Posted by: kill em all... it makes loud popping noises when I hit strings and it increases with how hard I play the strings. ...

This can't be good...


[QUOTE=kill em all]... What's up? ...

I can't even guess without better information. Can you answer the previous questions, please?


[QUOTE=kill em all]... how can I fix it?

Without a better understanding of the situation, I can only suggest that you take it to an amp service tech, along with the answers to the questions I asked.