- Hans Klotz
German family of organ builders. Richard Rensch (b Eisleben, 9 Feb 1923; d 1997) was a choirboy at the Thomaskirche, Leipzig; after a carpenter’s apprenticeship in Eisleben, he acquired his knowledge of organ building with the firm of Walcker. He had a broad musical education, taking master organ builder’s examinations in 1956, and he founded a workshop in Lauffen (Neckar) which today operates under the name Richard Rensch Orgelbau GmbH. His son Johann Christhard (b Ludwigsburg, 2 Aug 1952) was trained by Rieger at Schwarzach in Austria and joined his father’s business in 1973, becoming a partner in 1976 and taking over the firm in 1983. Philipp Nessling joined the management in 2008.
Since the 1950s the firm has used slider chests with mechanical key action and also, as far as possible, with mechanical stop action; the cases are designed to be self-supporting (with a maximum depth of 1.2 metres). Various forms of unequal temperament are used in voicing (chiefly one devised by Kimberger). The firm builds new organs and undertakes reconstructions and repairs. Richard Rensch developed a mechanical setter-combination in ...