The CS-Ultra arrived earlier today I was pretty shocked when I took it out of the box - its f'ing huge! (forgive the language but that was my exact words when I saw it) Just a quick question how do I tune the box to 16hz? I have only one port bung, should there have been two? Any help appreciated. I'm still setting up at the minute and can't/won't comment on performance until I get everything where I'm happy with it - starting first with the tuning so any help would be much appreciated!