Hey, I'm not sure if its okay to post these here, but i've got a few questions to ask. Noob in speakers here.

First off, i've bought a M3300SF today. I've seen alot of good reviews on it but I don't see much people having it. Was it a bad choice?

Secondly, what's the difference between M3300 and M3300SF?

Thirdly, is it normal to hear a loud crack every time i on my subwoofer?

Fourthly, when i plug in my headphone into the jack, there is still sound coming out from my main speakers. Why's that?

Yup that's all. Sorry for asking too much but as far as I've used it (the whole day), the speakers are awesome! Thanks in advance!

Thanks alot man. I feel more relieved now. I thought mah speakers were already spoilt after i bought it. haha. But about the 4th answer, anyway to mute the main speakers completely while listening to your headphones? If its impossible, then its okay.

Oo. alright gotcha! thanks alot guys! so far the speakers had been working great! Well undergo further inspection