Can anyone tell me how to tune a sub. I hear a lot of talk about SPL meters and the like and I dont have a clue what you guys are talking about, but would like to be educated. Anybody fancy giving me an overview on calibrating my system , using an SPL and secondlyl where I can get one from? I tried RicherSounds but they dont stock them. BTW, I'm the guy that owns the Vibe (I posted earlier in the week) who also wanted to listen to the hallowed SVS. Strangely nobody has come back to me for a possible test (I live in London). Have all you SVS owners suddenly got shy?