The ellipsoid loudspeaker units are networked and connected
to the power supply. Their raspberry-coloured bodies are made
up of plastic semi-shells connected by a band of sound-transparent,
perforated metal. Each is crowned with a scratch-resistant, stainless
steel plate with an engraved text.
outer shell contains electronic components combined to create
a single element which is accommodated in a second, separate
protective covering. The acoustic signal is directed outwards
by a sound cone within the ellipsoid. The construction is sufficiently
vandalism-proof, weatherproof and frostproof. Any refuse which
is kicked or thrown in will fall out of the openings at the bottom.
Each ellipsoid is screwed onto a steel tube and fixed into the
ground with its own foundation so that it cannot be tipped over.
electronic components used have been combined together to create
a weatherproof, low-maintenance module which has been sealed
with resin. The broadband loudspeaker employed has a minimised
power of 5 watts. The operating costs are low. The files for
the composition have been compressed into MP3 format and are
played using a flash memory with direct amplification to avoid
mechanical wear and tear.
The length of the pauses and the random
process for the sequence in which the sound pieces are played
is controlled by a processor. Configurations such as volume or
time parameters can be set via a temporarily activated WLAN.
The status of the ellipsoids will be monitored for maintenance
purposes and transmitted to a service centre via GRPS.
Stefan Krüskemper, office of integrative art
With the collaboration
Essl and Trillian GmbH
Land Berlin, Senatsverwaltung für Stadtentwicklung
Hunboldt-Universty, Campus Adlershof
The sound installation is
open to the public day and night