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Articles Nov-Dec 2020

Effectron Reinforces Dr. APJ Abdul Kalam College Auditorium with Adamson Sound, Barco Projection and Effectron Lights and Furnishing

The 2000-seat multipurpose auditorium at the Dr. APJ Abdul Kalam Government College in Daman, in August 2020 was installed with an impressive audio architecture from Adamson..... read more

Soundframe Gives LOTD an Exclusive Harman Professional Audio System Finesse

SoundFrame recently outfitted Lord of the Drinks’ Kolkata location with a complete Harman Professional Audio System to provide exceptional audio quality and coverage for its patrons..... read more

Neumann Home Studio Academy India Edition - In Conversation with Meghdeep Bose

Meghdeep Bose is a noted arranger, composer and music producer. In this exclusive interview with PT, Meghdeep talks about his collaboration with Sennheiser and Neumann for the Indian edition..... read more

Acoustics In Auditorium Design - by Vijay Purandare

How a room sounds and feels depends heavily on the specific acoustic properties of the materials in the room. For example, the acoustics of a concert hall are designed..... read more

Acoustic and Audio System Design for Small Rooms- Part 4 - by Rahul Sarma

In Part 3 of the series, Rahul spoke about the science behind absorption and diffusion..... read more

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QSC and Theatre Concepts Blanket the Largest Auditorium in South India’s Adiparashakthi College Group with Perfect Sound

QSC and Theatre Concepts install WideLine10 line array loudspeakers at Adiparashakthi Agricultural and Medical Colleges

Established in 1978, the Adiparashakthi Charitable Medical, Educational, and Cultural Trust (ACMEC) operates major educational and cultural centres across the state of Tamil Nadu. Among them is the Adiparashakthi Agricultural and Medical Colleges, where a 1,200-seat auditorium hosts live performances and spiritual gatherings as well as educational events.

When the trustees needed a sound system worthy of the impressive hall, systems integrator Theatre Concepts crafted an end-to-end QSC solution comprised of twenty WideLine10 line array loudspeakers supported by ten PLD Series power amplifiers, eight K12.2 and four K8.2 active loudspeakers, and a TouchMix-30 Pro digital mixer for front-of-house. The house, control room, and a rehearsal room are interlinked via the Q-Sys audio ecosystem, including a Core 110f processor and I/O-8 Flex audio input peripheral.

“Picture 1,200 people sitting in one place, with the goal of having a common spiritual moment,” says Theatre Concepts’ Harry Martin, who designed and supervised the installation. “To ensure that everyone has the same experience in terms of sound, the auditorium really needed an excellent line array system.” While line arrays are a go-to solution for ensuring uniform sound levels from the front of a room to the rear, Harry is quick to point out that the side-to-side coverage was just as important in this venue:

“This auditorium is very wide, about 150 feet,” he says. “That’s the first thing that drove us towards the WL2102-w loudspeaker from the WideLine 10 Series, because it has 140 degrees of horizontal dispersion. This helped us eliminate any blank spots from one side of any row to the other. With a point-source system, there’s no way we would have been able to calibrate things so precisely and do such a perfect job of eliminating dead spots.”

Systems integrator Theatre Concepts crafted an end-to-end QSC solution with line array loudspeakers, power amplifiers, active loudspeakers, digital mixer and Q-Sys audio ecosystem

Both the compact size and built-in DSP of the PLD Series amplifiers made them an ideal choice to power the WideLine arrays. “We had very little space to put in power amps, just an alcove below the media pit,” explains Harry. “The PLDs are four-channel amps, so for the arrays on either side of the stage, we were able to fit all the power we needed into just one rack. Then there’s all the DSP in there, which is designed to work with the WideLine loudspeakers. The FAST [Flexible Amplifier Summing Technology] distributes all the amps’ power to all the loudspeakers ideally, and the result is excellent sound quality throughout the auditorium.”

Theatre Concepts hung eight WideLine 10 boxes on either side of the stage, but their acoustic analysis discovered a couple of areas that still needed filling out. Their solution began with K.2 Series active loudspeakers at the front of the stage:

“Even with the great performance of the main arrays, we also needed to fill in the first fourteen or so rows of seats,” he describes. “We placed some of the K12.2 as front fills — we call it the ‘lip fill’ because it’s right at the lip of the stage. The remaining K12.2s and K8.2s are stage monitors.”

Another challenge was balancing audio coverage with visual aesthetics, for which more WideLine loudspeakers — in an uncommon location for array loudspeakers — proved useful. “With 140 degrees of coverage, we didn’t want to place the arrays in the very corners,” says Harry. “Yet, moving them too far in towards the centre created an obstruction the client was unhappy with. The ceiling is about 42 feet high and the top cabinet needed to be hung four feet down from there. The client felt that the bottom cabinets would interfere too much with the audience’s vision.” Harry and his team placed four more WideLine 10s at the center of the rear of the auditorium, on a delay. This provided two benefits: coverage in the very back plus supplemental fill down the centerline of the room, which allowed him and his team to “position the front arrays so that the client was happy.”

Compared to the sort of mixing board one might expect to see in such a venue, the TouchMix-30 Pro is quite compact. For Harry, the small size still meant big capability: “Many of the cultural and spiritual events there have live music.” he says, “We might have fourteen or more microphones at once, for starters. Also, the client wanted a fool proof system and didn’t want to need a technical expert on the property at all times. When we showed them the TouchMix, with the recall for different scenes and the ‘wizards’ for setting up inputs and such, its ease of operation was one of the tipping points that convinced them to go with QSC for the entire system.”

The final tipping point was Q-Sys, QSC’s scalable, secure architecture for routing audio, video and control over Ethernet. “They wanted recording, monitoring, connection with the rehearsal room, and again, they wanted it foolproof,” Harry continues. “We could provide all that with Q-Sys. First of all, we told them it’s Layer 3. That means it’s compatible with whatever existing network and IT systems they have — and they had a lot already, like lighting control and building automation, all that sort of thing. Other products work on Layer 2, which means you’d need to build a separate network for the audio.” All these QSC attributes were the reason that Theatre Concepts won the job over 12 other bidders.

When officials at Adiparashakthi heard the system for the first time, the results spoke for themselves. “They were extremely happy,” Harry enthuses. “They had already listened to and worked with a lot of other systems on their properties in different locations. They walked around the room, listening carefully, and could not find any dead spots. They were very happy with the quality of the sound. The client ultimately described it as a mind-blowing experience. For me as an integrator, QSC has been my go-to since it was introduced in India about ten years ago. I was a distributor, so I’m familiar with it. I love the design, the reliability, the sound quality, and the support of the QSC team here. It gives me a lot of confidence.”