The ambitious Foundry Theatre has chosen an ideal location for its production of W. David Hancock’s two-character drama Master. The design of Brooklyn’s Irondale Center, a former worship and religious-education space in the Lafayette Avenue Presbyterian Church (a gem of 19th-century architecture), strains heavenward with worn ecclesiastical grandeur. It’s an environment likely to put arriving spectators in a reflective mood appropriate for playing their parts as tacit mourners in an immersive performance piece that depicts a memorial service and gallery retrospective honoring James Leroy Clemens.