Hi all.

Recently, upon playing in my school's drumline program (we play in the gym), I hear a "taptaptaptaptap" (it's rather fast) coming from the speaker I'm plugged in to. If I mute the strings, it goes away (usually).

It seems to be happening only in that room, haven't noticed it anywhere else.

I play with a Fender Jazz Bass and a Roland 30 Cube Bass Amp.

Any idea what's going on?
It might be the bass itself, on mine the bit where you plug it in is always coming loose and this makes it buzz. You could try doing the screws up a little tighter.