Editor’s note: Acoustics in the Worship Space, Parts I, II, III, IV, V, VI, VII, VIII, IX, X, and XI have appeared in The Diapason, May 1983, May 1984, January 1986, May 1987, April 1988, April 1990, July 1991, May 1992, April 2009, December 2012, and June 2015 respectively.