Amp buzz while playing notes

[Geo0321]

Hello
I know this is a common topic, but there's a bunch of different specifics from case to case. So I have a MIM fender Jazz bass and I run it through an Ampeg PF350 through an Ampeg 4x10 cab (I forget which model but if somebody wants to know I can find it out), and whenever I play any note whether is be slap or finger or pick, I just get this horrible buzz-fart from my amp... I could hear it with earbuds in, it's not the bass acoustically. If I twist the cable that goes into the bass it makes noise and a little less buzz in certain spots. So maybe it is the input on my bass, like it's loose or something. I don't know a lot about the technical stuff but I'm pretty sure it's the speakers.
Hell I don't know, somebody please help, it will be greatly appreciated.
Thanks so much

 

[BassmanPaul]

If by buzz you mean hum then I would try a new guitar cable for a start.

 

[JimChjones]

And after that try another amp. A guitar amp will do as long as you play it quietly, you don't have to play loud or low notes if its the sort of hum we think it is.

 

[lz4005]

Hell I don't know, somebody please help, it will be greatly appreciated.

At this point you're guessing. Start eliminating variables.
Different cable first. One that you know works.
Then isolate the problem to either the bass or the amp. Use the same instrument with a different amp or vice versa. That will tell you where the problem is.
Do that and report back.

 

[Geo0321]

Hey guys so I started noodling
First I plugged into my marshall guitar amp and it sounded fine. Then I went back to the Ampeg and tried some other cable I have on my guitar, results came back even worse. Went back to the original cable and found that there's a spot on the input where I have to turn the input jack so there's no buzz, im assuming this means there's something up with the input on my guitar.
Btw thanks for all the quick helpful replies.