televised live on CBS. The opening week of concerts included performances by a specially invited list of guest orchestras (Boston, Philadelphia, and Cleveland), who regularly appeared at Carnegie Hall each season, as well as the new hall's resident ensemble. Several reporters panned the hall, while at least two conductors praised the acoustics. While the initial intention had been that Philharmonic Hall would replace Carnegie Hall, which could then be demolished, that scenario did not take place. Management made several attempts to remedy the induced acoustical problems, with little success, leading to a substantial 1970s renovation designed by acoustician Cyril Harris in conjunction with project architect Philip Johnson. It included demolishing the hall's interior, selling its pipe organ to California's Crystal Cathedral, and rebuilding a new auditorium within the outer framework and facade. While initial reaction to the improvements was favorable and some advocates remained steadfast, overall feelings about the new hall's sound soured and acoustics there continued to be problematic. One assessment by Robert C. Ehle stated: The seating capacity is large (around 2,600 seats) and the sidewalls are too far apart to provide early reflections to the center seats. The ceiling is high to increase reverberation time but the clouds are too high to reinforce early reflections adequately. The bass is weak because the very large stage does not adequately reinforce the low string instruments. In December 1977, High Fidelity magazine published an article that stated members of the Philharmonic disliked the sound so much they referred to the venue as "A Very Fishy Hall." In 1992, under the tenure of Kurt Masur with the New York Philharmonic, several solid maple wood convex surfaces were installed on the side walls and suspended from the ceiling of the stage to improve acoustics. The maple was specially selected to minimize its grain pattern. The new components are filled with fiberglass to deaden vibrations. The ongoing problems with the hall's acoustics eventually led the New York Philharmonic to consider a merger with Carnegie Hall in 2003, which would have returned the Philharmonic to Carnegie Hall for most of its concerts each season. However, both sides abandoned talks after four months. Beginning in 2005 (and continuing in 2006), the Mostly Mozart Festival has experimented with extending the stage for the Mostly Mozart orchestra farther out into the seats from the main stage for the Festival's summer season. Notable events David Geffen Hall is