A virtual press conference from Sound & Video Contractor

SIA Acoustics and Boston Light and Sound Upgrade Robsham Theater With JBL VERTEC® Subcompact Line Array Elements

The Robsham Theater Arts Center (RTAC) is a focal point of Boston College in Massachusetts, USA. Built in 1981, the facility houses the 591-seat Robsham Theater, along with an exhibit space, a studio theater and other facilities. As the Robsham Theater’s presentations grew in scope over the years to encompass musicals, dance programs, drama and theater productions, it became clear that a redesign of the original audio system was needed.

The Robsham Theater system is one of the first to use JBL VERTEC® VT4886 subcompact line array elements, with 12 VT4886 loudspeakers forming a single, center array supplemented by two JBL VPSB7118DP 18-inch powered subwoofers suspended directly behind the array, with six additional AC15 speakers along the lip of the stage. The system is driven with Crown Audio I-Tech HD amplifiers and BSS Audio Soundweb processing. System management is handled via the Harman HiQnet™ System Architect™ communication protocol and software for remote control and monitoring.

SIA Acoustics of New York served as the system design consultant, with Boston Light and Sound performing the installation. “The project started because the original sound system had become outdated,? said Adam Shulman of SIA. “However, after looking at the venue and its current and future needs, we realized there were some additional requirements—the project needed to encompass not only the PA but the media infrastructure as well. The RTAC is also a teaching facility, so it is critical that the students are able to access and use the equipment in a way that’s reflective of how things are done in the real world. As a result, the theater’s patchbays, racks and cabling were also substantially overhauled.?

“The system needed to provide even coverage, support the spoken word very well and provide moderate to high SPL for more dynamic productions,? stated George Cooke of the Robsham Theater Arts Center. “I suggested going with a line array system because it would perform well in the space, and give students the opportunity to work with an industry-standard loudspeaker configuration.?

Shulman continued, “We looked at the JBL VT4886 and found a number of compelling features that made it very suitable for this project. The product performs as well off-axis as well as it does on-axis—often, loudspeakers will be fine on-axis but compromise off-axis performance. And vertical dispersion is where the rubber meets the road. If a single element performs badly in this regard, the issue is severely compounded when you stack the elements in a line array. Throw, consistency, coverage—all of these commonly used metrics are the result of directivity. Many speakers fall apart off-axis, horizontally or vertically [especially important in vertical arrays]. The VT4886 combines good off-axis response, compact size and proportionally high output, and these were the primary factors in selecting it here.?

The VT4886 loudspeakers were placed in an unusual configuration—the main loudspeaker system encompasses 12 VT4886 loudspeakers in a single line array above the stage. “As it turned out, the excellent horizontal coverage of the VT4886 loudspeakers enabled us to place them in a single 12-box array exterior to the catwalk area,? Cooke noted. “Although most installations would place arrays on both sides of the stage, we ran an acoustical analysis and determined that a mono cluster would work wonderfully in the Robsham Theater. This is unusual, but we didn’t need a stereo image, and we get real 120-degree coverage out of the VT4886 loudspeakers.?

Shulman pointed out, “Both intuition and the predictive data indicated that a single array of greater length would outperform two shorter arrays. Given a finite budget, the need for a consistent experience [which benefits the entire audience] outweighs the argument for something like stereo imaging [which only a small slice of the audience typically enjoys]. We were confident this was the right choice and the results have proven it to be the case.?

“The subsequent real-time measurements exactly matched Shulman’s predictions,? Cooke said. “There are no ‘choice seats’ anymore because now it sounds great wherever you sit.?

For more information on SIA Acoustics, please visit www.siaacoustics.com

For more information on Boston Light and Sound, please visit www.blsi.com

HARMAN (www.harman.com) designs, manufactures and markets a wide range of audio and infotainment solutions for the automotive, consumer and professional markets – supported by 15 leading brands including AKG®, Harman Kardon®, Infinity®, JBL®, Lexicon® and Mark Levinson®. The Company is admired by audiophiles across multiple generations and supports leading professional entertainers and the venues where they perform. More than 20 million automobiles on the road today are equipped with HARMAN audio and infotainment systems. HARMAN has a workforce of about 11,000 people across the Americas, Europe and Asia, and reported sales of $3.2 billion for the last twelve months ended March 31, 2010. The Company’s shares are traded on the New York Stock Exchange under the symbol NYSE:HAR.

For additional information, contact:

Travis McGee
Definition Branding & Marketing
(212) 660-2555 ext. 24
Travis.mcgee@definitionbam.com

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