Informative and interesting. One thing I have always wanted to find out and settle. Hope that you can help me.

Referring to the above vibration, my Dell desktop is sitting on the table together with the 2 side speakers and a subwoofer (part of the Dell package) and also 2 WD NAS HDD.

I do turn up the speakers volume (subwoofer as well) when the music is nice. Will that resulting vibration cause any problem to the PC and NAS HDD? Or too small to be of concern?

Thanks.

Hope not. Can feel slight vibration on the table with the sub woofer on. Thing is, how much vibration is OK. Hard to tell.