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QSC Audio Line Arrays, Amplification & More For System At University Auditorium In India

"The system's 140-degree spread means there was no requirement for a center cluster - coverage and intelligibility are excellent throughout the auditorium." - Sanjay Mudartha, Acoustic Control

A new 325-seat auditorium located at Christ University in Bangalore, India has been equipped with a QSC Audio ILA v2 line array and amplification as part of an integrated multimedia system, supplied and installed by locally-based Acoustic Control.

The new purpose-built auditorium, with its raked seating, forms part of the new Engineering College block on Christ University’s Kengeri campus, situated on the outskirts of Bangalore, and will support this faculty in hosting lectures, presentations and cultural events.

Included within Acoustic Control’s system design are ceiling-suspended ILA line arrays at left and right, each consisting of five WL2082-i cabinets plus four 18-inch subwoofers positioned under the stage within a masonry and concrete housing. Stage monitoring is provided by four QSC HPR122 powered stage monitors.

Each line array element contains two 8-inch, neodymium magnet woofers and dual 1.75-inch neodymium compression drivers with titanium dome HF (selectable bi-amp or tri-amp operation) to provide a wide 140-degree coverage.

Powering the system are six QSC RMX5050 power amplifiers, while loudspeaker management is via a pair of 2-input/8-output QSC SC28 system controllers and a 4-input/8-output processor. The SC28 offers simple preset recall processing and high quality audio, incorporating QSC’s proprietary Intrinsic Correction process.

Acoustic Control, who have designed a complete integrated solution (including full videoconferencing and 200 kW of back-up power), as well as acting as acoustic consultant, have been providing solutions to the university for more than 15 years.

Managing director Sanjay Mudartha explains that speech intelligibility had been the prime concern, and worked towards achieving a reverberation time of less than 0.7 seconds. “The compact size, matched with the width of coverage, make this a perfect cost-effective solution. The system’s 140-degree spread means there was no requirement for a center cluster – coverage and intelligibility are excellent throughout the auditorium, and the client is delighted.”

This is largely because the auditorium’s acoustics – including the QSC ILA modeling – were designed in EASE, with alignment and tuning carried out using Rational Acoustics Smaart. The entire room automation functions under AMX control, making it “child’s play” to operate, according to Mudartha.

However, he states that there had been a number of challenges that needed to be overcome – the principle one being that the architect had not made provision for a control room. “We explained the importance of a separate room and stressed that the location of the room was equally important, and eventually they agreed.” He adds that in India, where most building is done with masonry and RCC, this needed to be constructed from lightweight pipe and wood, since part of the auditorium floor was cantilevered out, with no support.

The project follows a previous Acoustic Control installation at Christ University, which saw the company supply and install a sound and lighting system for a larger 2,000-seat auditorium in 2005.

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