The customer is Galleria Music School, in Sin Ming Plaza Tower 1, Singapore. There is an upright piano in each teaching studio, backed up against a wall. The studios are small, carpeted, but with highly acoustically reflective walls of glass and plastered brick. As a result the sound level in them is intolerably high, and the pianos are tonally bright and ‘jangly’. In two studios the problem has been addressed by putting two UNISON SAP-75 panels in a six-inch gap between the rear of the piano and the wall. The panels are in portrait orientation and sit on the carpeted floor; no floor stands are used. The panels have cut the loudness of the pianos. The tonal character of the pianos has also been greatly improved – they are much more tonally balanced.
Pictures to follow.
Cross-posted from here.