[Vader]

First, a little back history: I have been wanting an SVS ever since I started reading the reviews on HTF, and I finally got one in February 2006: a 16-46 PCi. The problem was that I jumped in without doing my homework (ie. emailing Ron & Tom with my room specs). Turns out that, as hard as it is to bring an SVS to it's knees, my 3200 ft^3 HT room did just that: it came very close to bottoming (port noise, compression) at even modest volume levels (I listen at around 10-15 dB below reference typically). After a great deal of troubleshooting, and patience from Ron, Jim and Erik at SVS (I can't thank you enough!), I ended up with a pair of 20-39 PC+ cylinders. Right now, I run both in 20Hz tune, and regularly go over to the neighbors to straighten their pictures after watching a movie(!)

However, now I am paranoid about sacrificing any of the headroom I gained (the full 6dBs) by using the 16Hz tune, and bottoming the 20-39's out. I get fantastic bass on the 20Hz tune (greater than or equal to the 16Hz tune down to about 18Hz anechoic), but I do miss some of the really deep stuff I was getting with the 16-46 cylinder Is there anyone out there with Dual 20-39 PC+ cylinders and an even larger airspace that can tell me if I am worrying for nothing?