06 l January 2014
www.psneurope.com news AUSTRIA Bring on the wall!
Powersoft and Lambda Labs collaborate on building concrete-enclosed bass monster in Austria’s Club SUB, writes Erica Basnicki
POWERSOFT D-CELL504 IS high power amplifier modules have been specified to drive a unique ‘Wall of Bass’ at Club SUB in Wiener Neustadt, Austria. The club is located in a
heavily populated residential area, and the wall is capable of reproducing frequencies as low as 7Hz, which placed heavy emphasis on acoustic isolation. Leading the installation were
project managers Wolfgang Sauter from sound reproduction specialists Pro Performance and Reinhard Nell from acoustic experts Lambda Labs. For the Wall, 400kg concrete blocks that serve as loudspeaker
WORLD Avid dismisses concern over server ‘hole’ By Dave Robinson
AVID HAS brushed off a security incident which saw the entire Avid Pro Tools FTP beta software server accessible for public download for a period of 12 hours in mid-December. The ‘hole’ was discovered by
members of the public, who informed the
www.pro-tools-
expert.com (PTE) blog, which in turn alerted Avid HQ. “No personal data or customer data is being exposed,” PTE posted on the site after the discovery. “[These are] the servers that hold... future
releases of Avid software in beta format. You need licences to run these applications, so even with the links, a rush to download them is on the whole a pointless endeavour. However, PTE observed that
the event highlighted “a case of poor security being in place on
the Avid servers. It does not bode well for ensuring any Avid trade secrets remain that way for long”. During the incident, the server could be located and accessed by an uncomplicated Google search. Beta versions of Avid software, including Pro Tools and Sibelius, were available for
enclosures were cast and set into a 6 x 3m wall, using 13 tonnes of heavy concrete and a further 35 tonnes for the foundation. A self-enveloped 15” speaker
was produced and adapted to the unusual demands of this project. The single chassis are designed to act together like one single swinging wall – in a similar principle to a piston in a cylinder. “A perfect plane wave is
created in the interior of the club, which naturally moves along the side walls and doesn’t induce any room modes,” explained Lambda Labs’ German-based director, Steffen Kroschel. “The rear of the main floor
was converted into a single bass trap to absorb the incoming sound wave.” To achieve this optimum
performance, each driver was powered by its own dedicated amplifier. Nell chose Powersoft to provide amplification, while Lambda Labs supported the installation with items including amplifier mounting frames. “As we have been using
Powersoft amplifiers in our regular self-powered loudspeakers for four years, it was obvious to choose the company again for this project as we have a lot of experience with their modules, such as the Digimod 1500, which we use successfully in
The ‘Wall of Bass’: where Dubstep is transformed into an infrasonic weapon!
our subwoofer product MF-15A and our full range enclosure TX- 3A,” said Kroschel. Via their 2-channel 32 D-Cell504 IS amp modules, Powersoft were able to deliver 25,600 watts of power, including 4in voice coils with a custom- made venting system using a hardened membrane. In addition, special mid-high
speakers generate a cylinder wave for a longer throw and less room reflections while the DJ reference sound is provided by CX-1A and CX-3A self-powered monitors with Powersoft D-Cell modules.
“The data we measured melts
in one’s mouth,” said Nell. “The sound pressure level is beyond 140dB and absolutely equal at any point in the room (not that anyone would need such sound pressure levels). And you don’t have the possibility to feel 7Hz throughout your whole body every day.” Kroschel added that
everyone who has played through the system has been hugely impressed. “For some it has changed their awareness of music.”
www.lambda-labs.com www.powersoft-audio.com
download for 12 hours before the company’s engineers were able to block the server from public visibility. Approached for a statement,
Avid dismissed the incident. “This problem affected a single beta software server, there were no adverse consequences, and the issue was quickly resolved,” said Tony Carridi, marketing director for audio. PTE says it stands by its original story.
www.avid.com
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