A couple of weeks ago I heared a loud crackle and then a pop from my left speaker which worried me but the speaker continued working so I didn't investigate any further. Every time I've listened to my speakers since I've been waitng for it to happen again and nothing happened over the weekend when I was listening to a few cds but a few minutes ago it did happen again giving me a bit of a fright. The speakers are working fine and it doesn't seem to have caused any problems.
What could it be and should I be worried ?
What could it be and should I be worried ?