The 1 898-seat Luzern concert hall provides enormous acoustical flexibility by means of a reverberation chamber with operable doors, a height adjustable canopy and variable sound absorbing finishes.
During 2006 and 2007, Eckhard Kahle was responsible for optimising the acoustical settings of the hall both for the Lucerne Festival and for performances throughout the year. Between 2008 and 2010 the acoustical settings were reviewed and refined through discussions with the KKL staff responsible for the day-to-day operation.
Tuning/Intervention KKL Luzern www.kkl-luzern.ch
Location Lucerne, Switzerland.
Time Frame 2006-2010.
Client KKL Luzern.
Venues Main concert hall with seating for between 1 840 and 1 898 — acoustically variable.
Acoustics Consultancy Role Between 2006 and 2007, adjustments were made to optimise the acoustical settings of the hall both for the Lucerne Festival and for performances throughout the year. From 2008 to 2010, collaboration with KKL staff to develop an acoustic user manual detailing the settings for the concert hall. Review and refinement of the acoustical settings during visits and through discussions with KKL staff responsible for the day-to-day operation.
Services Between 2006 and 2007: responsible for making adjustments to the concert hall variable acoustics settings during and after rehearsals and concerts, including discussions with conductors, in order to optimise the acoustics for the number of musicians, repertoire and desired sound quality. The height of the canopy was optimised with two primary settings developed for chamber orchestra and symphonic orchestra uses. By varying the position of all 50 doors to the reverberation chamber between fully closed and fully open, the acoustical coupling between the chamber and the auditorium can be tuned, including changes of the door angle to adjust the acoustical projection from the stage to the audience.
From 2008 to 2010: discussions with KKL staff responsible for the concert hall, in order to monitor and further optimise the operation of the variable acoustics systems, including production of an acoustical user manual.
Consultant(s) Eckhard Kahle, Kahle Acoustics. Eckhard Kahle was project manager, for Russell Johnson and Artec Consultants Inc, during the construction of the KKL in Lucerne, 1995 to 2000.