| Description | Sound Research Laboratories Limited technical report for the South Bank Theatre Board, prepared by R F Willmott. Report number C/C 1580/11. There is a letter attached to the inside front cover, to H Pugh of Denys Lasdun Redhouse & Softley from Richard Cowell of Sound Research Laboratories regarding noise control in the drum revolve. There is a sticker on the front cover of the report marked '333'. |