I don't know if you caught my post in one of the What Are You Listening To threads, but my grandfather and father were both master organ builders in Vienna. My grandfather had worked on the organ in Vienna's Musikverein, completed restoration work on an organ used by Liszt, and built a custom organ for day use in Vienna's Votive Church. As a teen I got to help my father do restoration work on a church organ in Stratford, Ontario which was a great summer job and time well spent together. Last time my wife and I were in Europe we caught a concert in Budapest's St Stephen's Basilica, and I've heard St Stephen's organ in Vienna as well. My one regret is missing a concert in Passau, Germany, that has the largest organ in Germany (funny, that was St Stephen's as well). We took the family on a bike tour from Passau to Vienna and the tour guide was late on arrival so I missed the concert. ;_; Thanks for sharing. Will definitely check this out, though I may wish I had gone with a ported sub instead of sealed.
Don't think mine will reach down to 16 Hz even with wall coupling.