Located 3,900 meters above sea level among the mountainous peaks of Shigatse, Tibet, the recently completed Everest Grand Theatre holds the accolade of being the highest altitude professional theatre in the world, and its outfitted with a versatile sound reinforcement design headed by the Allen & Heath dLive mix system platform.
“To meet the needs of the varied performances and activities, flexibility is absolutely critical,” explains Zhu Liuwei, senior technical manager of EZPro, the China-based integrator that handed the project. “With the dLive system, we could store and recall different ‘modes’ — by using Show Files, Scenes, and the Preset Library — to achieve very efficient changes. As the dLive audio engine resides in the MixRack, it is easy to change the location of the Surface if required, and this was another big plus for the theatre.”
EZPro partnered a pair of Allen & Heath dLive S7000 surfaces with two DM64 MixRacks to operate as main and backup systems. The S7000 is the largest control surface in the dLive range, offering up to 216 fader strips via six layers of 36 faders, in addition to 26 assignable SoftKeys joined by local analogue and AES I/O. The dual 12-inch touchscreens provide an overview of the mix, with the Harmony UI allowing control of all parameters.
The DM64 MixRack is built around Allen & Heath’s 96kHz XCVI processing core, providing 128 input channels with processing, 64 mix outs with processing, a configurable bus architecture, and stated latency of 0.7ms. The S7000 and DM64 are linked via dual redundant gigaACE sockets and both support a pair of hot-swappable PSUs for added redundancy and resilience.
With Dante used throughout the theatre for audio distribution, both dLive systems were equipped with Dante cards with the Primary and Secondary ports being used to provide a redundant audio link, via network switches, to the sound system’s power amplifiers and loudspeakers. Additionally, an analogue audio connection from the main MixRack was used to provide an additional level of redundancy in the event of a network hardware failure.
“The dLive system ticks all the boxes. A flexible FOH position, ease-of-use and fast setup,” concludes Zhu Liuwei. “And the variety of built-in DEEP Processors greatly helped FOH engineers to deliver a studio-quality mix for music performances.”