The Chelsea Hotel is built at the base of a five-star upmarket apartment
hotel, and so noise transmission was an issue. Additionally, there
was an underlying requirement for the speakers to not to be visible,
while at the same time not sacrificing performance.
Both of these obstacles have been overcome by the correct choice
of speakers to fit above the visible architectural ceiling and mounting
them on a floating suspended ceiling, isolated from the building
structure via spring and rubber coupling devices.
Additionally, a DBX signal processor allowed the ability to create
different audio system presets, so that after a certain time in
the evening, the lower frequencies are reduced to minimise any transmissions
up into the hotel rooms.