Ok, so I go to college. Well that's during the day. My 4sats+1sub do just fine during the day, too. However, I don't feel as though I'm disturbing enough people when we host a party (which is often the case on weekend nights) The sats are plenty loud, but there's just not enough coming from the one sub. So here's what it comes down to. Can I add an extra sub to my 4.1's and if so, what/how/wheredoiget/howmuch. Whew...thanks in advance