Sennheiser LSP 500 PROs power Nobel Prize winner meeting

Four of the firm's new portable loudspeakers were used at this year's Lindau Nobel Laureate gathering in Germany.
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Four of Sennheiser's new LSP 500 PRO loudspeakers were deployed at the 63rd Lindau Nobel Laureate Meeting in Germany.

The event, which takes pace every year on the shore of Lake Constance, was attended by 34 Nobel Prize winners and over 600 top students from 78 countries – all keen to mingle with some of the world's leading researchers in the field of chemistry – this year's chosen topic.

Among the suppliers of media equipment and support for the events – held in numerous locations, from the Landratsamt county hall to the Lindau theatre – was Baas Film.

The master LSP 500 PRO speaker was equipped with a pair of network-capable Sennheiser EM 300 G3 receivers, which were controlled via iPad. A Sennheiser SR 300 IEM G3 transmitter was placed in the uppermost slot of the master speaker, while voice signals were supplied by SKM 500-935/965 G3 evolution handheld transmitters and SK 300/500 G3 bodypack transmitters.

The loudspeakers, which weigh in at just 13.6 kg, were chosen to transmit the welcome speech for a reception at the Hotel Bad Schachen in the town. "The integrated tilt function enabled us to position the LSP 500 PRO on the high terrace and still be able to uniformly address the entire audience below – with a level of speech intelligibility that was simply amazing," Baas Film boss Mihály Baas said. The loudspeakers were also used to transmit music.

High-quality sound comes from an eight-inch woofer and a three-quarter-inch driver operating on a horn with a 80 x 60-degree dispersion pattern. The frequency response ranges from 65 Hz to 18 kHz (-10 dB). The two speakers are driven separately by Class D output stage modules with power outputs of 120 Watts (peak) and 55 Watts (continuous). Power can be supplied through a low-power mains cable, but the LSP 500 PRO can also be operated wirelessly via two integrated rechargeable batteries. Fully charged batteries can provide up to eight hours of continuous operation before they need recharging.

It also includes an integrated seven-channel mixer that can process various signal types. Music can be input via two analogue cinch sockets. A mic/line input with switchable phantom power is situated at the rear of the speaker, and digital audio data can be input via a USB port, which, with suitable configuration, can also be used as an output for recording on a USB medium. Wireless music input is possible via Bluetooth; WPA2 encryption is provided for WLAN operation. Three slots can be used to connect Sennheiser Mikroport transmitters in a 9.5-inch format.

The mixer offers integrated DSP algorithms, including a compressor/limiter combination, which can shape the sound and prevent oversteering. A semi-parametric equaliser can be placed into all of the inputs and outputs. It is also possibley to delay output signals to compensate for signal runtimes in distributed speaker set-ups. If the distributed loudspeakers can't be connected wirelessly, they can be wired using the Link Out combined output. Link Out has a switchable low-pass filter to enable an external sub to be connected as required, without the need for further peripheral devices. A stereo Line output (2 x cinch) is available as well.

For more information on the LSP 500 PRO, which was launched at ISE, click here.

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