>> APPLICATIONS Bon Jovi utilises the
K-way to rock green K series amplifiers powered by bio-fuel generator for 45,000-fan show at the River Plate stadium
THE EFFICIENT design of Powersoft’s K series amplifiers allowed an Eco-Energy bio-fuel generator to power a Bon Jovi concert at the River Plate stadium in Buenos Aires. Some 60 Powersoft K10 and K8 amplifiers were used to drive a JBL Vertec system for more than 45,000 fans. “We wanted to make this remarkable
performance a green statement by reducing the carbon footprint of the concert,” said Federico Sainz, CEO of Buenos Aires Live Show (BALS), the sound company that provided the system for the show. “Simply put, if we used traditional power-hungry amplifiers, we could not take this approach because of the incredibly large current draw. The Powersoft K10 and K8 amplifiers operate at over 90-percent efficiency, a green statement in itself, making it possible to use this new power generating technology. It was estimated that this concert saved ten tons of CO2 emissions, a significant reduction on past events.” The speaker system driven by the K series amps consisted of 36 JBL Vertec VT4889-1 speakers for the main FOH, 24 JBL Vertec VT4889-1 for the FOH
EV for 2010 games in New Delhi
side main, 48 Sublow VCA 2X21-inch for the subwoofers and 40 line array VCA for the left, centre and right delayed satellite systems. “It has been over 15-years since Bon
Jovi played in Argentina, so the sound quality needed to be first rate all the way,” continued Saniz. “Powersoft amplifiers provided sterling sound quality with an extremely tight bass response delivering a high-level sonic performance to the packed audience. Powersoft also did not handicap the transient response one bit as its operational efficiency never stressed the power generator’s supply. In essence, by using Powersoft amplifiers, it was possible to get the same amount of audio power using half the electricity required for regular power amplifiers.” “We were very pleased with the successful results of the green experiment we participated in for the Bon Jovi concert,” added Carlos Maiocchi, CEO for Equaphon Sistemas de Sonido, Argentina’s Powersoft rep. “K series amps are green-designed from the ground up, yet deliver high-
level, clean, clear audio power.” >
powersoft-audio.com
A STATE-OF-THE-ART Electro- Voice sound system now serves the Jawaharlal Nehru Stadium in New Delhi, India, the biggest venue used for the 2010 Commonwealth Games. The stadium hosted athletics events and also served as the venue for the opening and closing ceremonies. Designed by the Electro-Voice team in Burnsville, Minnesota, and installed and commissioned by Bosch India, the system comprises 132 customised XLC127DVX (line-array),
120 Sx300PI, 300 EVID 6.2, and 60 ZX5-60PI surface-mounted systems, all driven by a combination of 135 P3000RL and TG amplifiers to deliver an average of 107dB and a peak of 115dB. The entire system is remote- controlled and supervised from a single laptop in the stadium control room, all via EV’s IRIS-Net software platform. The system’s auto gain control adjusts the system in
accordance with crowd noise. >
electrovoice.com
42 audioPRO December/January 2010/11
… supplied an STX series loudspeaker system for the new $15 million grandstand in Minot, North Dakota. The grandstand is part of the State Fair Center complex, dubbed ‘the entertainment capital of North Dakota’ and home to the State’s annual fair, which attracted more than 300,000 people in 2010. A total of 12 of Renkus-Heinz's STX4/94 three-way systems were installed. >
renkus-heinz.com
>> RENKUS-HEINZ HAS…
www.audioprointernational.com
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