Today was a long hot day and I was pretty bored. Just for fun I ran an RCA cable from the subwoofer preout of my Pioneer VSX-D510 to the Left input of my minisystem(I couldn't find a Y-Cable so I only had one speaker). My mini-system is an MX-J206. Sure enough with a little tweaking I got my left bookshelf speaker to act as a subwoofer. Now it didn't sound too bad, but at high volumes the little 6.5 inch woofers could barely keep up with the rest of the system. So I guess what I really want to know is if it is ok to use a passive sub and power it with my minisystem amp: Here are the specs; 60 watts per channel min. driven into 6 ohms with no more than 10% THD(not very good I know). I ask this because I notice that the DIY kits are very cheap with only the amp costing alot. I do not need a crossover because bass management is being handled by my receiver. So is it possible(and worthwhile) to power a sub with a mini-system?